enable pycodestyle and ruff tests

.github/workflows/main.yml

@@ -25,6 +25,15 @@ jobs:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
       - uses: actions/checkout@v2
 
+      - name: check linting using pycodestyle
+        run: |
+            pip install pycodestyle
+            pip install pytest
+            pycodestyle $(git ls-files '*.py') 
+          
+            pip install ruff
+            ruff check $(git ls-files '*.py')
+
       # Runs a single command using the runners shell
       - name: install tdb package
         run: |

ruff.toml

@@ -0,0 +1,31 @@
+
+exclude = [
+    ".eggs",
+    ".git",
+    ".venv",
+    "venv"]
+
+line-length = 88
+indent-width = 4
+
+target-version = "py39"
+
+[lint]
+select = ["E4", "E7", "E9", "F", "B", "D417"]
+# extend-select = ["D417"] deactivated by default in case of pep257 codestyle.
+# see also: https://docs.astral.sh/ruff/rules/undocumented-param/
+ignore = ["B008", "D107", "D203", "D212", "D213", "D402", "D413", "D415", "D416", "E722", "E731", "F403", "F405", "F841", "B904"]
+fixable = ["ALL"]
+unfixable = []
+# ignore list in docstring according to numpy codestyles for Dxxx.
+# http://www.pydocstyle.org/en/5.0.1/error_codes.html#default-conventions
+# B904:  Within an `except` clause, raise exceptions with `raise ... from err` or `raise ... from None` to distinguish them from errors in exception handling
+
+[lint.pydocstyle]
+convention = "pep257"
+
+[format]
+quote-style = "double"
+indent-style = "space"
+skip-magic-trailing-comma = false
+line-ending = "auto"

tox.ini

@@ -0,0 +1,10 @@
+[pycodestyle]
+count = False
+ignore = E226,E302,E71, W293, W291, E731, E502, E722, W605
+max-line-length = 160
+statistics = True
+
+# E502: the backslash is redundant between brackets
+# E731: do not assign a lambda expression, use a def
+# E722 do not use bare 'except'
+# W605 invalid escape sequence \xxx for LaTeX commands