use getattr

petab/__init__.py

@@ -2,81 +2,26 @@
 PEtab global
 ============
 
-.. warning::
-
-    All functions in here are deprecated. Use the respective functions from
-    :mod:`petab.v1` instead.
-
 Attributes:
     ENV_NUM_THREADS:
         Name of environment variable to set number of threads or processes
         PEtab should use for operations that can be performed in parallel.
         By default, all operations are performed sequentially.
 """
-import functools
-import inspect
-import sys
-import warnings
+import importlib
 from warnings import warn
 
-# deprecated imports
-from petab.v1 import *  # noqa: F403, F401, E402
-
-from .v1.format_version import __format_version__  # noqa: F401, E402
-
-# __all__ = [
-#     'ENV_NUM_THREADS',
-# ]
-
 ENV_NUM_THREADS = "PETAB_NUM_THREADS"
 
 
-class DeprecatedProblem(Problem):
-    deprecated_use = True
-
-
-Problem = DeprecatedProblem
-
+def __getattr__(name):
+    if attr := globals().get(name):
+        return attr
 
-def _deprecated_v1(func):
-    """Decorator for deprecation warnings for functions."""
-
-    @functools.wraps(func)
-    def new_func(*args, **kwargs):
-        warnings.warn(
-            f"petab.{func.__name__} is deprecated, "
-            f"please use petab.v1.{func.__name__} instead.",
-            category=DeprecationWarning,
-            stacklevel=2,
-        )
-        return func(*args, **kwargs)
-
-    return new_func
-
-
-def _deprecated_import_v1(module_name: str):
-    """Decorator for deprecation warnings for modules."""
     warn(
-        f"The '{module_name}' module is deprecated and will be removed "
-        f"in the next major release. Please use "
-        f"'petab.v1.{module_name.removeprefix('petab.')}' "
-        "instead.",
+        f"Accessing `petab.{name}` is deprecated and will be removed in "
+        f"the next major release. Please use `petab.v1.{name}` instead.",
         DeprecationWarning,
         stacklevel=3,
     )
-
-
-__all__ = [
-    x
-    for x in dir(sys.modules[__name__])
-    if not x.startswith("_")
-    and x not in {"sys", "warnings", "functools", "warn", "inspect"}
-]
-
-
-# apply decorator to all functions in the module
-for name in __all__:
-    obj = globals().get(name)
-    if callable(obj) and inspect.isfunction(obj):
-        globals()[name] = _deprecated_v1(obj)
-del name, obj
+    return getattr(importlib.import_module("petab.v1"), name)

petab/versions.py

@@ -3,8 +3,8 @@
 
 from pathlib import Path
 
-from petab.C import FORMAT_VERSION
 from petab.v1 import Problem as V1Problem
+from petab.v1.C import FORMAT_VERSION
 from petab.v1.yaml import load_yaml
 from petab.v2 import Problem as V2Problem