diff --git a/.gitignore b/.gitignore
index 25837d1..3688468 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+venv/
 # Byte-compiled / optimized / DLL files
 __pycache__/
 *.py[cod]
diff --git a/.pylintrc b/.pylintrc
index 924c6f9..9078b89 100644
--- a/.pylintrc
+++ b/.pylintrc
@@ -1,195 +1,135 @@
-[MASTER]
+[MAIN]
+
+# Analyse import fallback blocks. This can be used to support both Python 2 and
+# 3 compatible code, which means that the block might have code that exists
+# only in one or another interpreter, leading to false positives when analysed.
+analyse-fallback-blocks=no
+
+# Clear in-memory caches upon conclusion of linting. Useful if running pylint
+# in a server-like mode.
+clear-cache-post-run=no
+
+# Load and enable all available extensions. Use --list-extensions to see a list
+# all available extensions.
+#enable-all-extensions=
+
+# In error mode, messages with a category besides ERROR or FATAL are
+# suppressed, and no reports are done by default. Error mode is compatible with
+# disabling specific errors.
+#errors-only=
+
+# Always return a 0 (non-error) status code, even if lint errors are found.
+# This is primarily useful in continuous integration scripts.
+#exit-zero=
+
+# A comma-separated list of package or module names from where C extensions may
+# be loaded. Extensions are loading into the active Python interpreter and may
+# run arbitrary code.
+extension-pkg-allow-list=
 
 # A comma-separated list of package or module names from where C extensions may
 # be loaded. Extensions are loading into the active Python interpreter and may
-# run arbitrary code
+# run arbitrary code. (This is an alternative name to extension-pkg-allow-list
+# for backward compatibility.)
 extension-pkg-whitelist=
 
-# Add files or directories to the blacklist. They should be base names, not
-# paths.
+# Return non-zero exit code if any of these messages/categories are detected,
+# even if score is above --fail-under value. Syntax same as enable. Messages
+# specified are enabled, while categories only check already-enabled messages.
+fail-on=
+
+# Specify a score threshold under which the program will exit with error.
+fail-under=10
+
+# Interpret the stdin as a python script, whose filename needs to be passed as
+# the module_or_package argument.
+#from-stdin=
+
+# Files or directories to be skipped. They should be base names, not paths.
 ignore=CVS
 
-# Add files or directories matching the regex patterns to the blacklist. The
-# regex matches against base names, not paths.
-ignore-patterns=
+# Add files or directories matching the regular expressions patterns to the
+# ignore-list. The regex matches against paths and can be in Posix or Windows
+# format. Because '\\' represents the directory delimiter on Windows systems,
+# it can't be used as an escape character.
+ignore-paths=
+
+# Files or directories matching the regular expression patterns are skipped.
+# The regex matches against base names, not paths. The default value ignores
+# Emacs file locks
+ignore-patterns=^\.#
+
+# List of module names for which member attributes should not be checked
+# (useful for modules/projects where namespaces are manipulated during runtime
+# and thus existing member attributes cannot be deduced by static analysis). It
+# supports qualified module names, as well as Unix pattern matching.
+ignored-modules=
 
 # Python code to execute, usually for sys.path manipulation such as
 # pygtk.require().
 #init-hook=
 
-# Use multiple processes to speed up Pylint.
+# Use multiple processes to speed up Pylint. Specifying 0 will auto-detect the
+# number of processors available to use, and will cap the count on Windows to
+# avoid hangs.
 jobs=1
 
-# List of plugins (as comma separated values of python modules names) to load,
+# Control the amount of potential inferred values when inferring a single
+# object. This can help the performance when dealing with large functions or
+# complex, nested conditions.
+limit-inference-results=100
+
+# List of plugins (as comma separated values of python module names) to load,
 # usually to register additional checkers.
 load-plugins=
 
 # Pickle collected data for later comparisons.
 persistent=yes
 
-# Specify a configuration file.
-#rcfile=
+# Minimum Python version to use for version dependent checks. Will default to
+# the version used to run pylint.
+py-version=3.11
+
+# Discover python modules and packages in the file system subtree.
+recursive=no
+
+# Add paths to the list of the source roots. Supports globbing patterns. The
+# source root is an absolute path or a path relative to the current working
+# directory used to determine a package namespace for modules located under the
+# source root.
+source-roots=
 
 # When enabled, pylint would attempt to guess common misconfiguration and emit
-# user-friendly hints instead of false-positive error messages
+# user-friendly hints instead of false-positive error messages.
 suggestion-mode=yes
 
 # Allow loading of arbitrary C extensions. Extensions are imported into the
 # active Python interpreter and may run arbitrary code.
 unsafe-load-any-extension=no
 
-
-[MESSAGES CONTROL]
-
-# Only show warnings with the listed confidence levels. Leave empty to show
-# all. Valid levels: HIGH, INFERENCE, INFERENCE_FAILURE, UNDEFINED
-confidence=
-
-# Disable the message, report, category or checker with the given id(s). You
-# can either give multiple identifiers separated by comma (,) or put this
-# option multiple times (only on the command line, not in the configuration
-# file where it should appear only once).You can also use "--disable=all" to
-# disable everything first and then reenable specific checks. For example, if
-# you want to run only the similarities checker, you can use "--disable=all
-# --enable=similarities". If you want to run only the classes checker, but have
-# no Warning level messages displayed, use"--disable=all --enable=classes
-# --disable=W"
-disable=missing-docstring,
-        print-statement,
-        parameter-unpacking,
-        unpacking-in-except,
-        old-raise-syntax,
-        backtick,
-        long-suffix,
-        old-ne-operator,
-        old-octal-literal,
-        import-star-module-level,
-        non-ascii-bytes-literal,
-        raw-checker-failed,
-        bad-inline-option,
-        locally-disabled,
-        locally-enabled,
-        file-ignored,
-        suppressed-message,
-        useless-suppression,
-        deprecated-pragma,
-        apply-builtin,
-        basestring-builtin,
-        buffer-builtin,
-        cmp-builtin,
-        coerce-builtin,
-        execfile-builtin,
-        file-builtin,
-        long-builtin,
-        raw_input-builtin,
-        reduce-builtin,
-        standarderror-builtin,
-        unicode-builtin,
-        xrange-builtin,
-        coerce-method,
-        delslice-method,
-        getslice-method,
-        setslice-method,
-        no-absolute-import,
-        old-division,
-        dict-iter-method,
-        dict-view-method,
-        next-method-called,
-        metaclass-assignment,
-        indexing-exception,
-        raising-string,
-        reload-builtin,
-        oct-method,
-        hex-method,
-        nonzero-method,
-        cmp-method,
-        input-builtin,
-        round-builtin,
-        intern-builtin,
-        unichr-builtin,
-        map-builtin-not-iterating,
-        zip-builtin-not-iterating,
-        range-builtin-not-iterating,
-        filter-builtin-not-iterating,
-        using-cmp-argument,
-        eq-without-hash,
-        div-method,
-        idiv-method,
-        rdiv-method,
-        exception-message-attribute,
-        invalid-str-codec,
-        sys-max-int,
-        bad-python3-import,
-        deprecated-string-function,
-        deprecated-str-translate-call,
-        deprecated-itertools-function,
-        deprecated-types-field,
-        next-method-defined,
-        dict-items-not-iterating,
-        dict-keys-not-iterating,
-        dict-values-not-iterating
-
-# Enable the message, report, category or checker with the given id(s). You can
-# either give multiple identifier separated by comma (,) or put this option
-# multiple time (only on the command line, not in the configuration file where
-# it should appear only once). See also the "--disable" option for examples.
-enable=c-extension-no-member
-
-
-[REPORTS]
-
-# Python expression which should return a note less than 10 (10 is the highest
-# note). You have access to the variables errors warning, statement which
-# respectively contain the number of errors / warnings messages and the total
-# number of statements analyzed. This is used by the global evaluation report
-# (RP0004).
-evaluation=10.0 - ((float(5 * error + warning + refactor + convention) / statement) * 10)
-
-# Template used to display messages. This is a python new-style format string
-# used to format the message information. See doc for all details
-#msg-template=
-
-# Set the output format. Available formats are text, parseable, colorized, json
-# and msvs (visual studio).You can also give a reporter class, eg
-# mypackage.mymodule.MyReporterClass.
-output-format=colorized
-
-# Tells whether to display a full report or only the messages
-reports=no
-
-# Activate the evaluation score.
-score=yes
-
-
-[REFACTORING]
-
-# Maximum number of nested blocks for function / method body
-max-nested-blocks=5
-
-# Complete name of functions that never returns. When checking for
-# inconsistent-return-statements if a never returning function is called then
-# it will be considered as an explicit return statement and no message will be
-# printed.
-never-returning-functions=optparse.Values,sys.exit
+# In verbose mode, extra non-checker-related info will be displayed.
+#verbose=
 
 
 [BASIC]
 
-# Naming style matching correct argument names
+# Naming style matching correct argument names.
 argument-naming-style=snake_case
 
 # Regular expression matching correct argument names. Overrides argument-
-# naming-style
+# naming-style. If left empty, argument names will be checked with the set
+# naming style.
 #argument-rgx=
 
-# Naming style matching correct attribute names
+# Naming style matching correct attribute names.
 attr-naming-style=snake_case
 
 # Regular expression matching correct attribute names. Overrides attr-naming-
-# style
+# style. If left empty, attribute names will be checked with the set naming
+# style.
 #attr-rgx=
 
-# Bad variable names which should always be refused, separated by a comma
+# Bad variable names which should always be refused, separated by a comma.
 bad-names=foo,
           bar,
           baz,
@@ -197,38 +137,54 @@ bad-names=foo,
           tutu,
           tata
 
-# Naming style matching correct class attribute names
+# Bad variable names regexes, separated by a comma. If names match any regex,
+# they will always be refused
+bad-names-rgxs=
+
+# Naming style matching correct class attribute names.
 class-attribute-naming-style=any
 
 # Regular expression matching correct class attribute names. Overrides class-
-# attribute-naming-style
+# attribute-naming-style. If left empty, class attribute names will be checked
+# with the set naming style.
 #class-attribute-rgx=
 
-# Naming style matching correct class names
+# Naming style matching correct class constant names.
+class-const-naming-style=UPPER_CASE
+
+# Regular expression matching correct class constant names. Overrides class-
+# const-naming-style. If left empty, class constant names will be checked with
+# the set naming style.
+#class-const-rgx=
+
+# Naming style matching correct class names.
 class-naming-style=PascalCase
 
-# Regular expression matching correct class names. Overrides class-naming-style
+# Regular expression matching correct class names. Overrides class-naming-
+# style. If left empty, class names will be checked with the set naming style.
 #class-rgx=
 
-# Naming style matching correct constant names
+# Naming style matching correct constant names.
 const-naming-style=UPPER_CASE
 
 # Regular expression matching correct constant names. Overrides const-naming-
-# style
+# style. If left empty, constant names will be checked with the set naming
+# style.
 #const-rgx=
 
 # Minimum line length for functions/classes that require docstrings, shorter
 # ones are exempt.
 docstring-min-length=-1
 
-# Naming style matching correct function names
+# Naming style matching correct function names.
 function-naming-style=snake_case
 
 # Regular expression matching correct function names. Overrides function-
-# naming-style
+# naming-style. If left empty, function names will be checked with the set
+# naming style.
 #function-rgx=
 
-# Good variable names which should always be accepted, separated by a comma
+# Good variable names which should always be accepted, separated by a comma.
 good-names=i,
            j,
            k,
@@ -236,28 +192,33 @@ good-names=i,
            Run,
            _
 
-# Include a hint for the correct naming format with invalid-name
+# Good variable names regexes, separated by a comma. If names match any regex,
+# they will always be accepted
+good-names-rgxs=
+
+# Include a hint for the correct naming format with invalid-name.
 include-naming-hint=no
 
-# Naming style matching correct inline iteration names
+# Naming style matching correct inline iteration names.
 inlinevar-naming-style=any
 
 # Regular expression matching correct inline iteration names. Overrides
-# inlinevar-naming-style
+# inlinevar-naming-style. If left empty, inline iteration names will be checked
+# with the set naming style.
 #inlinevar-rgx=
 
-# Naming style matching correct method names
+# Naming style matching correct method names.
 method-naming-style=snake_case
 
 # Regular expression matching correct method names. Overrides method-naming-
-# style
+# style. If left empty, method names will be checked with the set naming style.
 #method-rgx=
 
-# Naming style matching correct module names
+# Naming style matching correct module names.
 module-naming-style=snake_case
 
 # Regular expression matching correct module names. Overrides module-naming-
-# style
+# style. If left empty, module names will be checked with the set naming style.
 #module-rgx=
 
 # Colon-delimited sets of names that determine each other's naming style when
@@ -270,134 +231,94 @@ no-docstring-rgx=^_
 
 # List of decorators that produce properties, such as abc.abstractproperty. Add
 # to this list to register other decorators that produce valid properties.
+# These decorators are taken in consideration only for invalid-name.
 property-classes=abc.abstractproperty
 
-# Naming style matching correct variable names
+# Regular expression matching correct type alias names. If left empty, type
+# alias names will be checked with the set naming style.
+#typealias-rgx=
+
+# Regular expression matching correct type variable names. If left empty, type
+# variable names will be checked with the set naming style.
+#typevar-rgx=
+
+# Naming style matching correct variable names.
 variable-naming-style=snake_case
 
 # Regular expression matching correct variable names. Overrides variable-
-# naming-style
+# naming-style. If left empty, variable names will be checked with the set
+# naming style.
 #variable-rgx=
 
 
-[LOGGING]
-
-# Logging modules to check that the string format arguments are in logging
-# function parameter format
-logging-modules=logging
-
-
-[VARIABLES]
-
-# List of additional names supposed to be defined in builtins. Remember that
-# you should avoid to define new builtins when possible.
-additional-builtins=
-
-# Tells whether unused global variables should be treated as a violation.
-allow-global-unused-variables=yes
-
-# List of strings which can identify a callback function by name. A callback
-# name must start or end with one of those strings.
-callbacks=cb_,
-          _cb
-
-# A regular expression matching the name of dummy variables (i.e. expectedly
-# not used).
-dummy-variables-rgx=_+$|(_[a-zA-Z0-9_]*[a-zA-Z0-9]+?$)|dummy|^ignored_|^unused_
-
-# Argument names that match this expression will be ignored. Default to name
-# with leading underscore
-ignored-argument-names=_.*|^ignored_|^unused_
-
-# Tells whether we should check for unused import in __init__ files.
-init-import=no
-
-# List of qualified module names which can have objects that can redefine
-# builtins.
-redefining-builtins-modules=six.moves,past.builtins,future.builtins
-
+[CLASSES]
 
-[TYPECHECK]
+# Warn about protected attribute access inside special methods
+check-protected-access-in-special-methods=no
 
-# List of decorators that produce context managers, such as
-# contextlib.contextmanager. Add to this list to register other decorators that
-# produce valid context managers.
-contextmanager-decorators=contextlib.contextmanager
-
-# List of members which are set dynamically and missed by pylint inference
-# system, and so shouldn't trigger E1101 when accessed. Python regular
-# expressions are accepted.
-generated-members=
+# List of method names used to declare (i.e. assign) instance attributes.
+defining-attr-methods=__init__,
+                      __new__,
+                      setUp,
+                      asyncSetUp,
+                      __post_init__
 
-# Tells whether missing members accessed in mixin class should be ignored. A
-# mixin class is detected if its name ends with "mixin" (case insensitive).
-ignore-mixin-members=yes
+# List of member names, which should be excluded from the protected access
+# warning.
+exclude-protected=_asdict,_fields,_replace,_source,_make,os._exit
 
-# This flag controls whether pylint should warn about no-member and similar
-# checks whenever an opaque object is returned when inferring. The inference
-# can return multiple potential results while evaluating a Python object, but
-# some branches might not be evaluated, which results in partial inference. In
-# that case, it might be useful to still emit no-member and other checks for
-# the rest of the inferred objects.
-ignore-on-opaque-inference=yes
+# List of valid names for the first argument in a class method.
+valid-classmethod-first-arg=cls
 
-# List of class names for which member attributes should not be checked (useful
-# for classes with dynamically set attributes). This supports the use of
-# qualified names.
-ignored-classes=optparse.Values,thread._local,_thread._local
+# List of valid names for the first argument in a metaclass class method.
+valid-metaclass-classmethod-first-arg=mcs
 
-# List of module names for which member attributes should not be checked
-# (useful for modules/projects where namespaces are manipulated during runtime
-# and thus existing member attributes cannot be deduced by static analysis. It
-# supports qualified module names, as well as Unix pattern matching.
-ignored-modules=
 
-# Show a hint with possible names when a member name was not found. The aspect
-# of finding the hint is based on edit distance.
-missing-member-hint=yes
+[DESIGN]
 
-# The minimum edit distance a name should have in order to be considered a
-# similar match for a missing member name.
-missing-member-hint-distance=1
+# List of regular expressions of class ancestor names to ignore when counting
+# public methods (see R0903)
+exclude-too-few-public-methods=
 
-# The total number of similar names that should be taken in consideration when
-# showing a hint for a missing member.
-missing-member-max-choices=1
+# List of qualified class names to ignore when counting class parents (see
+# R0901)
+ignored-parents=
 
+# Maximum number of arguments for function / method.
+max-args=5
 
-[SIMILARITIES]
+# Maximum number of attributes for a class (see R0902).
+max-attributes=7
 
-# Ignore comments when computing similarities.
-ignore-comments=yes
+# Maximum number of boolean expressions in an if statement (see R0916).
+max-bool-expr=5
 
-# Ignore docstrings when computing similarities.
-ignore-docstrings=yes
+# Maximum number of branch for function / method body.
+max-branches=12
 
-# Ignore imports when computing similarities.
-ignore-imports=no
+# Maximum number of locals for function / method body.
+max-locals=15
 
-# Minimum lines number of a similarity.
-min-similarity-lines=4
+# Maximum number of parents for a class (see R0901).
+max-parents=7
 
+# Maximum number of public methods for a class (see R0904).
+max-public-methods=20
 
-[SPELLING]
+# Maximum number of return / yield for function / method body.
+max-returns=6
 
-# Limits count of emitted suggestions for spelling mistakes
-max-spelling-suggestions=4
+# Maximum number of statements in function / method body.
+max-statements=50
 
-# Spelling dictionary name. Available dictionaries: none. To make it working
-# install python-enchant package.
-spelling-dict=
+# Minimum number of public methods for a class (see R0903).
+min-public-methods=2
 
-# List of comma separated words that should not be checked.
-spelling-ignore-words=
 
-# A path to a file that contains private dictionary; one word per line.
-spelling-private-dict-file=
+[EXCEPTIONS]
 
-# Tells whether to store unknown words to indicated private dictionary in
-# --spelling-private-dict-file option instead of raising a message.
-spelling-store-unknown-words=no
+# Exceptions that will emit a warning when caught.
+overgeneral-exceptions=builtins.BaseException,builtins.Exception
 
 
 [FORMAT]
@@ -408,7 +329,7 @@ expected-line-ending-format=
 # Regexp for a line that is allowed to be longer than the limit.
 ignore-long-lines=^\s*(# )?<?https?://\S+>?$
 
-# Number of spaces of indent required inside a hanging  or continued line.
+# Number of spaces of indent required inside a hanging or continued line.
 indent-after-paren=4
 
 # String used as indentation unit. This is usually "    " (4 spaces) or "\t" (1
@@ -418,16 +339,9 @@ indent-string='    '
 # Maximum number of characters on a single line.
 max-line-length=100
 
-# Maximum number of lines in a module
+# Maximum number of lines in a module.
 max-module-lines=1000
 
-# List of optional constructs for which whitespace checking is disabled. `dict-
-# separator` is used to allow tabulation in dicts, etc.: {1  : 1,\n222: 2}.
-# `trailing-comma` allows a space between comma and closing bracket: (a, ).
-# `empty-line` allows space-only lines.
-no-space-check=trailing-comma,
-               dict-separator
-
 # Allow the body of a class to be on the same line as the declaration if body
 # contains single statement.
 single-line-class-stmt=no
@@ -437,6 +351,99 @@ single-line-class-stmt=no
 single-line-if-stmt=no
 
 
+[IMPORTS]
+
+# List of modules that can be imported at any level, not just the top level
+# one.
+allow-any-import-level=
+
+# Allow explicit reexports by alias from a package __init__.
+allow-reexport-from-package=no
+
+# Allow wildcard imports from modules that define __all__.
+allow-wildcard-with-all=no
+
+# Deprecated modules which should not be used, separated by a comma.
+deprecated-modules=
+
+# Output a graph (.gv or any supported image format) of external dependencies
+# to the given file (report RP0402 must not be disabled).
+ext-import-graph=
+
+# Output a graph (.gv or any supported image format) of all (i.e. internal and
+# external) dependencies to the given file (report RP0402 must not be
+# disabled).
+import-graph=
+
+# Output a graph (.gv or any supported image format) of internal dependencies
+# to the given file (report RP0402 must not be disabled).
+int-import-graph=
+
+# Force import order to recognize a module as part of the standard
+# compatibility libraries.
+known-standard-library=
+
+# Force import order to recognize a module as part of a third party library.
+known-third-party=enchant
+
+# Couples of modules and preferred modules, separated by a comma.
+preferred-modules=
+
+
+[LOGGING]
+
+# The type of string formatting that logging methods do. `old` means using %
+# formatting, `new` is for `{}` formatting.
+logging-format-style=old
+
+# Logging modules to check that the string format arguments are in logging
+# function parameter format.
+logging-modules=logging
+
+
+[MESSAGES CONTROL]
+
+# Only show warnings with the listed confidence levels. Leave empty to show
+# all. Valid levels: HIGH, CONTROL_FLOW, INFERENCE, INFERENCE_FAILURE,
+# UNDEFINED.
+confidence=HIGH,
+           CONTROL_FLOW,
+           INFERENCE,
+           INFERENCE_FAILURE,
+           UNDEFINED
+
+# Disable the message, report, category or checker with the given id(s). You
+# can either give multiple identifiers separated by comma (,) or put this
+# option multiple times (only on the command line, not in the configuration
+# file where it should appear only once). You can also use "--disable=all" to
+# disable everything first and then re-enable specific checks. For example, if
+# you want to run only the similarities checker, you can use "--disable=all
+# --enable=similarities". If you want to run only the classes checker, but have
+# no Warning level messages displayed, use "--disable=all --enable=classes
+# --disable=W".
+disable=raw-checker-failed,
+        bad-inline-option,
+        locally-disabled,
+        file-ignored,
+        suppressed-message,
+        useless-suppression,
+        deprecated-pragma,
+        use-symbolic-message-instead
+
+# Enable the message, report, category or checker with the given id(s). You can
+# either give multiple identifier separated by comma (,) or put this option
+# multiple time (only on the command line, not in the configuration file where
+# it should appear only once). See also the "--disable" option for examples.
+enable=c-extension-no-member
+
+
+[METHOD_ARGS]
+
+# List of qualified names (i.e., library.method) which require a timeout
+# parameter e.g. 'requests.api.get,requests.api.post'
+timeout-methods=requests.api.delete,requests.api.get,requests.api.head,requests.api.options,requests.api.patch,requests.api.post,requests.api.put,requests.api.request
+
+
 [MISCELLANEOUS]
 
 # List of note tags to take in consideration, separated by a comma.
@@ -444,100 +451,181 @@ notes=FIXME,
       XXX,
       TODO
 
+# Regular expression of note tags to take in consideration.
+notes-rgx=
 
-[CLASSES]
 
-# List of method names used to declare (i.e. assign) instance attributes.
-defining-attr-methods=__init__,
-                      __new__,
-                      setUp
+[REFACTORING]
 
-# List of member names, which should be excluded from the protected access
-# warning.
-exclude-protected=_asdict,
-                  _fields,
-                  _replace,
-                  _source,
-                  _make
+# Maximum number of nested blocks for function / method body
+max-nested-blocks=5
 
-# List of valid names for the first argument in a class method.
-valid-classmethod-first-arg=cls
+# Complete name of functions that never returns. When checking for
+# inconsistent-return-statements if a never returning function is called then
+# it will be considered as an explicit return statement and no message will be
+# printed.
+never-returning-functions=sys.exit,argparse.parse_error
 
-# List of valid names for the first argument in a metaclass class method.
-valid-metaclass-classmethod-first-arg=mcs
 
+[REPORTS]
 
-[DESIGN]
+# Python expression which should return a score less than or equal to 10. You
+# have access to the variables 'fatal', 'error', 'warning', 'refactor',
+# 'convention', and 'info' which contain the number of messages in each
+# category, as well as 'statement' which is the total number of statements
+# analyzed. This score is used by the global evaluation report (RP0004).
+evaluation=max(0, 0 if fatal else 10.0 - ((float(5 * error + warning + refactor + convention) / statement) * 10))
 
-# Maximum number of arguments for function / method
-max-args=5
+# Template used to display messages. This is a python new-style format string
+# used to format the message information. See doc for all details.
+msg-template=
 
-# Maximum number of attributes for a class (see R0902).
-max-attributes=7
+# Set the output format. Available formats are text, parseable, colorized, json
+# and msvs (visual studio). You can also give a reporter class, e.g.
+# mypackage.mymodule.MyReporterClass.
+#output-format=
 
-# Maximum number of boolean expressions in a if statement
-max-bool-expr=5
+# Tells whether to display a full report or only the messages.
+reports=no
 
-# Maximum number of branch for function / method body
-max-branches=12
+# Activate the evaluation score.
+score=yes
 
-# Maximum number of locals for function / method body
-max-locals=15
 
-# Maximum number of parents for a class (see R0901).
-max-parents=7
+[SIMILARITIES]
 
-# Maximum number of public methods for a class (see R0904).
-max-public-methods=20
+# Comments are removed from the similarity computation
+ignore-comments=yes
 
-# Maximum number of return / yield for function / method body
-max-returns=6
+# Docstrings are removed from the similarity computation
+ignore-docstrings=yes
 
-# Maximum number of statements in function / method body
-max-statements=50
+# Imports are removed from the similarity computation
+ignore-imports=yes
 
-# Minimum number of public methods for a class (see R0903).
-min-public-methods=2
+# Signatures are removed from the similarity computation
+ignore-signatures=yes
 
+# Minimum lines number of a similarity.
+min-similarity-lines=4
 
-[IMPORTS]
 
-# Allow wildcard imports from modules that define __all__.
-allow-wildcard-with-all=no
+[SPELLING]
 
-# Analyse import fallback blocks. This can be used to support both Python 2 and
-# 3 compatible code, which means that the block might have code that exists
-# only in one or another interpreter, leading to false positives when analysed.
-analyse-fallback-blocks=no
+# Limits count of emitted suggestions for spelling mistakes.
+max-spelling-suggestions=4
 
-# Deprecated modules which should not be used, separated by a comma
-deprecated-modules=regsub,
-                   TERMIOS,
-                   Bastion,
-                   rexec
+# Spelling dictionary name. No available dictionaries : You need to install
+# both the python package and the system dependency for enchant to work..
+spelling-dict=
 
-# Create a graph of external dependencies in the given file (report RP0402 must
-# not be disabled)
-ext-import-graph=
+# List of comma separated words that should be considered directives if they
+# appear at the beginning of a comment and should not be checked.
+spelling-ignore-comment-directives=fmt: on,fmt: off,noqa:,noqa,nosec,isort:skip,mypy:
 
-# Create a graph of every (i.e. internal and external) dependencies in the
-# given file (report RP0402 must not be disabled)
-import-graph=
+# List of comma separated words that should not be checked.
+spelling-ignore-words=
 
-# Create a graph of internal dependencies in the given file (report RP0402 must
-# not be disabled)
-int-import-graph=
+# A path to a file that contains the private dictionary; one word per line.
+spelling-private-dict-file=
 
-# Force import order to recognize a module as part of the standard
-# compatibility libraries.
-known-standard-library=
+# Tells whether to store unknown words to the private dictionary (see the
+# --spelling-private-dict-file option) instead of raising a message.
+spelling-store-unknown-words=no
 
-# Force import order to recognize a module as part of a third party library.
-known-third-party=enchant
 
+[STRING]
 
-[EXCEPTIONS]
+# This flag controls whether inconsistent-quotes generates a warning when the
+# character used as a quote delimiter is used inconsistently within a module.
+check-quote-consistency=no
+
+# This flag controls whether the implicit-str-concat should generate a warning
+# on implicit string concatenation in sequences defined over several lines.
+check-str-concat-over-line-jumps=no
+
+
+[TYPECHECK]
 
-# Exceptions that will emit a warning when being caught. Defaults to
-# "Exception"
-overgeneral-exceptions=Exception
+# List of decorators that produce context managers, such as
+# contextlib.contextmanager. Add to this list to register other decorators that
+# produce valid context managers.
+contextmanager-decorators=contextlib.contextmanager
+
+# List of members which are set dynamically and missed by pylint inference
+# system, and so shouldn't trigger E1101 when accessed. Python regular
+# expressions are accepted.
+generated-members=
+
+# Tells whether to warn about missing members when the owner of the attribute
+# is inferred to be None.
+ignore-none=yes
+
+# This flag controls whether pylint should warn about no-member and similar
+# checks whenever an opaque object is returned when inferring. The inference
+# can return multiple potential results while evaluating a Python object, but
+# some branches might not be evaluated, which results in partial inference. In
+# that case, it might be useful to still emit no-member and other checks for
+# the rest of the inferred objects.
+ignore-on-opaque-inference=yes
+
+# List of symbolic message names to ignore for Mixin members.
+ignored-checks-for-mixins=no-member,
+                          not-async-context-manager,
+                          not-context-manager,
+                          attribute-defined-outside-init
+
+# List of class names for which member attributes should not be checked (useful
+# for classes with dynamically set attributes). This supports the use of
+# qualified names.
+ignored-classes=optparse.Values,thread._local,_thread._local,argparse.Namespace
+
+# Show a hint with possible names when a member name was not found. The aspect
+# of finding the hint is based on edit distance.
+missing-member-hint=yes
+
+# The minimum edit distance a name should have in order to be considered a
+# similar match for a missing member name.
+missing-member-hint-distance=1
+
+# The total number of similar names that should be taken in consideration when
+# showing a hint for a missing member.
+missing-member-max-choices=1
+
+# Regex pattern to define which classes are considered mixins.
+mixin-class-rgx=.*[Mm]ixin
+
+# List of decorators that change the signature of a decorated function.
+signature-mutators=
+
+
+[VARIABLES]
+
+# List of additional names supposed to be defined in builtins. Remember that
+# you should avoid defining new builtins when possible.
+additional-builtins=
+
+# Tells whether unused global variables should be treated as a violation.
+allow-global-unused-variables=yes
+
+# List of names allowed to shadow builtins
+allowed-redefined-builtins=
+
+# List of strings which can identify a callback function by name. A callback
+# name must start or end with one of those strings.
+callbacks=cb_,
+          _cb
+
+# A regular expression matching the name of dummy variables (i.e. expected to
+# not be used).
+dummy-variables-rgx=_+$|(_[a-zA-Z0-9_]*[a-zA-Z0-9]+?$)|dummy|^ignored_|^unused_
+
+# Argument names that match this expression will be ignored.
+ignored-argument-names=_.*|^ignored_|^unused_
+
+# Tells whether we should check for unused import in __init__ files.
+init-import=no
+
+# List of qualified module names which can have objects that can redefine
+# builtins.
+redefining-builtins-modules=six.moves,past.builtins,future.builtins,builtins,io
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..a432452
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,3 @@
+[project]
+name = "ynm3k"
+requires-python = ">3.8"
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index 56f11df..b83fde4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1 @@
-tornado==4.5.2
+tornado==6.4
\ No newline at end of file
diff --git a/ynm3k.py b/ynm3k.py
index f06566e..a72cdf0 100644
--- a/ynm3k.py
+++ b/ynm3k.py
@@ -1,7 +1,6 @@
 #!/usr/bin/env python
 # coding: utf-8
 import sys
-import time
 import uuid
 import datetime
 import mimetypes
@@ -15,55 +14,55 @@
 import tornado
 from tornado import gen
 
+# pylint: disable=W0223
+# pylint: disable=C0115
+# pylint: disable=C0116
+
 def get_host_hash():
+    """Generate hash from hostname"""
     hostname = socket.gethostname()
     m = hashlib.md5()
-    m.update(hostname)
+    m.update(hostname.encode("utf-8"))
     return m.hexdigest()[:7]
 
 class MyHandler(tornado.web.RequestHandler):
-
     def head(self, *args, **kwargs):
         return self.get(*args, **kwargs)
 
     def set_default_headers(self):
-        self.set_header("Server", "YNM3K-%s" % SETTINGS['node_id'])
+        self.set_header("Server", f"YNM3K-{SETTINGS['node_id']}")
         self.set_header(
             "Set-Cookie",
             "csrftoken=8e0f2f299fede170969578ebceec0967; "
-            "expires=Thu, 09-Jan-2020 06:29:39 GMT; Max-Age=31449600; Path=/")
+            "expires=Thu, 09-Jan-2020 06:29:39 GMT; Max-Age=31449600; Path=/",
+        )
 
 
 class MainHandler(MyHandler):
-
     def get(self):
-        try:
-            headers = self.request.headers._dict
-        except:
-            headers = self.request.headers
-
+        headers = self.request.headers
         links = [
-            '/trace/',
-            '/static/abc.js',
-            '/static/abc/xyz.css',
-            '/static/abc/xyz/uvw.txt',
-            '/static/abc.html',
-            '/static/abc.jpg',
-            '/dynamic/abc.php',
-            '/dynamic/abc.asp',
-            '/code/200',
-            '/code/400',
-            '/code/404',
-            '/code/502',
-            '/size/11k.zip',
-            '/size/1k.bin',
-            '/slow/3',
-            '/slow/4-10',
-            '/redirect/301?url=http://www.notsobad.me',
-            '/redirect/302?url=http://www.notsobad.me',
-            '/redirect/js?url=http://www.notsobad.me',
+            "/trace/",
+            "/static/abc.js",
+            "/static/abc/xyz.css",
+            "/static/abc/xyz/uvw.txt",
+            "/static/abc.html",
+            "/static/abc.jpg",
+            "/dynamic/abc.php",
+            "/dynamic/abc.asp",
+            "/code/200",
+            "/code/400",
+            "/code/404",
+            "/code/502",
+            "/size/11k.zip",
+            "/size/1k.bin",
+            "/slow/3",
+            "/slow/4-10",
+            "/redirect/301?url=https://github.com/notsobad/ynm3k",
+            "/redirect/302?url=https://github.com/notsobad/ynm3k",
+            "/redirect/js?url=https://github.com/notsobad/ynm3k",
         ]
-        tpl = '''
+        tpl = """
         <h1>YNM3K Test site</h1>
         <h2>Request header</h2>
         <pre>{% for h in headers %}{{ h }}: {{ headers[h] }}
@@ -78,16 +77,16 @@ def get(self):
         <footer>
             <hr/>SERVER-ID: {{ node_id }}, Powered by YNM3K <a href="https://github.com/notsobad/ynm3k">Fork me</a> on Github
         </footer>
-        '''
+        """
         i = tornado.template.Template(tpl, whitespace="single")
-        out = i.generate(headers=headers, node_id=SETTINGS['node_id'], links=links)
+        out = i.generate(headers=headers, node_id=SETTINGS["node_id"], links=links)
         self.write(out)
 
+
 class TraceHandler(MyHandler):
     def get(self):
         self.set_header("Content-Type", "text/plain")
-        out = "{method} {url} {version}\r\n{headers}\r\n\r\n".format(method=self.request.method, 
-            url=self.request.uri, version=self.request.version, headers=str(self.request.headers))
+        out = f"{self.request.method} {self.request.uri} {self.request.version}\r\n{self.request.headers}\r\n\r\n" 
         self.write(out)
 
     def post(self):
@@ -95,105 +94,91 @@ def post(self):
 
 
 class FileHandler(MyHandler):
-
     def get(self, file_name):
         modified = datetime.datetime.now()
         self.set_header("Last-Modified", modified)
-        mime_type, encoding = mimetypes.guess_type(file_name)
+        mime_type, _ = mimetypes.guess_type(file_name)
         if mime_type:
             self.set_header("Content-Type", mime_type)
         try:
-            cache_time = int(self.request.headers.get('Cache', '95270'))
-        except:
+            cache_time = int(self.request.headers.get("Cache", "95270"))
+        except ValueError:
             cache_time = 95270
+
         if cache_time:
-            self.set_header("Expires", datetime.datetime.utcnow() +
-                            datetime.timedelta(seconds=cache_time))
-            self.set_header("Cache-Control", "max-age=" + str(cache_time))
-        self.write(file_name)
+            self.set_header(
+                "Expires",
+                datetime.datetime.utcnow() + datetime.timedelta(seconds=cache_time),
+            )
+            self.set_header("Cache-Control", f"max-age={cache_time}")
+        self.write(f"{file_name}\n")
 
 
 class DynamicHandler(MyHandler):
-
-    def get(self, file_name):
-        '''Generate random content for dynamic page'''
+    def get(self):
+        """Generate random content for dynamic page"""
         self.set_header("Content-Type", "text/html")
         d = {}
-        d['headers'] = dict(self.request.headers)
-        d['path'] = self.request.path
-        d['query'] = self.request.query
-        d['uri'] = self.request.uri
-        d['body'] = self.request.body
-        d['arguments'] = str(self.request.arguments)
+        d["headers"] = dict(self.request.headers)
+        d["path"] = self.request.path
+        d["query"] = self.request.query
+        d["uri"] = self.request.uri
+        d["body"] = self.request.body.decode("utf-8")
+        d["arguments"] = str(self.request.arguments)
 
         try:
-            i = int(self.request.headers.get('Cache', 0))
-            assert i
+            i = int(self.request.headers.get("Cache", 0))
+        except ValueError:
+            i = 0
+
+        if i > 0:
             self.set_header(
-                'Expires',
-                datetime.datetime.utcnow() + datetime.timedelta(seconds=i))
-            self.set_header('Cache-Control', 'max-age=%s' % i)
-        except:
-            pass
+                "Expires", datetime.datetime.utcnow() + datetime.timedelta(seconds=i)
+            )
+            self.set_header("Cache-Control", f"max-age={i}")
 
         j = json.dumps(d, indent=4, ensure_ascii=False)
-        self.write('hello :-)<pre>%s</pre><hr>%s' % (j, uuid.uuid4()))
+        self.write(f"<pre>{j}</pre><hr/>{uuid.uuid4()}\n")
 
     post = get
 
 
 class CodeHandler(MyHandler):
-
     def get(self, code):
-        '''pass'''
+        """pass"""
         code = int(code)
         self.send_error(code)
 
-    def write_error(self, code):
-        self.write(
-            '<h1>Http %s</h1> <hr/>Generated at %s' %
-            (code, str(
-                datetime.datetime.now())))
-
-    def set_status(self, status_code, reason=None):
-        try:
-            super(CodeHandler, self).set_status(status_code, reason)
-        except:
-            tornado.web.RequestHandler._status_code = status_code
-            tornado.web.RequestHandler._reason = "unknown service error"
+    def write_error(self, status_code, **kargs):
+        self.finish(
+            f"<h1>Http {status_code}</h1><hr/>Generated at {datetime.datetime.now()}\n"
+        )
 
 
 class SizeHandler(MyHandler):
-
     def get(self, size):
-        '''Generate certain size file'''
+        """Generate certain size file"""
         size = size.lower()
         try:
-            if 'k' in size:
-                i = int(size.replace('k', '')) * 1024
-            elif 'm' in size:
-                i = int(size.replace('m', '')) * 1024 * 1024
+            if "k" in size:
+                i = int(size.replace("k", "")) * 1024
+            elif "m" in size:
+                i = int(size.replace("m", "")) * 1024 * 1024
             else:
                 i = int(size)
         except ValueError:
-            return self.write('Wrong argument')
+            return self.write("Wrong argument\n")
 
-        self.set_header('Content-Description', 'File Transfer')
-        self.set_header('Content-Type', 'application/octet-stream')
-        #self.set_header('attachment','attachment; filename="a.zip"')
-        self.set_header('Content-Transfer-Encoding', 'binary')
-        return self.write('f' * i)
+        self.set_header("Content-Description", "File Transfer")
+        self.set_header("Content-Type", "application/octet-stream")
+        # self.set_header('attachment','attachment; filename="a.zip"')
+        self.set_header("Content-Transfer-Encoding", "binary")
+        return self.write("f" * i)
 
 
 class SlowHandler(MyHandler):
-
-    @tornado.web.asynchronous
-    @gen.engine
-    def get(self, start, end=0):
-        '''
-        Check https://gist.github.com/lbolla/3826189
-        '''
-        self.write("Start at: %s<br/>" % datetime.datetime.now())
+    async def get(self, start, end=0):
+        self.write(f"Start at: {datetime.datetime.now()}<br/>\n")
         _start = int(start)
         _end = 0
 
@@ -205,49 +190,44 @@ def get(self, start, end=0):
         else:
             i = _start
 
-        yield gen.Task(tornado.ioloop.IOLoop.instance().add_timeout, time.time() + i)
+        await gen.sleep(i)
 
-        self.write("End at: %s<br/>" % datetime.datetime.now())
-        self.finish()
+        self.write(f"End at: {datetime.datetime.now()}<br/>\n")
 
 
 class RedirectHandler(MyHandler):
-
     def get(self, method):
-        url = self.get_argument('url')
-        if method in ('301', '302'):
-            self.redirect(url, permanent=(method == '301'))
-        elif method == 'js':
-            self.write('<script>location.href="%s"</script>' % url)
-        elif method == 'meta':
-            self.write(
-                '<meta http-equiv="refresh" content="0; url=%s" />' %
-                url)
+        url = self.get_argument("url")
+        if method in ("301", "302"):
+            self.redirect(url, status=int(method))
+        elif method == "js":
+            self.write(f'<script>location.href="{url}"</script>\n' % url)
+        elif method == "meta":
+            self.write(f'<meta http-equiv="refresh" content="0; url={url}" />\n')
         else:
-            self.write('wrong argument')
+            self.write("wrong argument\n")
 
 
 define("ip", help="ip to bind", default=None)
 define("port", help="port to listen", default=9527)
 define("debug", default=False, help="enable debug?")
 tornado.options.parse_command_line()
-SETTINGS = {
-    'debug': options.debug,
-    'node_id': get_host_hash(),
-    'gzip': True
-}
-
-APP = tornado.web.Application([
-    (r'/', MainHandler),
-    (r'/trace/?.*', TraceHandler),
-    (r'/static/(.*)', FileHandler),
-    (r'/dynamic/(.*)', DynamicHandler),
-    (r'/code/(\d+).*', CodeHandler),
-    (r'/size/([\d|k|m]+).*', SizeHandler),
-    (r'/slow/(\d+)-?(\d+)?.*', SlowHandler),
-    (r'/redirect/(.*)', RedirectHandler),
-    (r'/*', MainHandler),
-], **SETTINGS)
+SETTINGS = {"debug": options.debug, "node_id": get_host_hash(), "gzip": True}
+
+APP = tornado.web.Application(
+    [
+        (r"/", MainHandler),
+        (r"/trace/?.*", TraceHandler),
+        (r"/static/(.*)", FileHandler),
+        (r"/dynamic/.*", DynamicHandler),
+        (r"/code/(\d+).*", CodeHandler),
+        (r"/size/([\d|k|m]+).*", SizeHandler),
+        (r"/slow/(\d+)-?(\d+)?.*", SlowHandler),
+        (r"/redirect/(.*)", RedirectHandler),
+        (r"/*", MainHandler),
+    ],
+    **SETTINGS,
+)
 
 if __name__ == "__main__":
     if not options.port: