fix according to coderabbit review

Author: gotcha

README.rst

@@ -124,11 +124,11 @@ Or you can use ``iex`` as a function decorator to launch ipdb if an exception is
 Using a non-default ipython-profile
 -----------------------------------
 By default ``ipdb`` will instantiate an ipython-session loaded with the default profile called ``default``.
-You can set a non-default profile by setting the environment variable ``IPDB_IPYTON_PROFILE``:
+You can set a non-default profile by setting the environment variable ``IPDB_IPYTHON_PROFILE``:
 
 .. code-block:: bash
 
-        export IPDB_IPYTON_PROFILE="ipdb"
+        export IPDB_IPYTHON_PROFILE="ipdb"
 
 Or by setting in ``pyproject.toml``:
 
@@ -137,7 +137,7 @@ Or by setting in ``pyproject.toml``:
         [tool.ipdb]
         ipython_profile = "ipdb"
 
-This should correspond with a profile-directory ``profile_ipdb```in your ``IPYTHON_HOME``.
+This should correspond with a profile-directory ``profile_ipdb`` in your ``IPYTHON_HOME``.
 If this profile-directory does not exist, we fall back to the default profile.
 
 

ipdb/__main__.py

@@ -62,14 +62,19 @@ def _get_debugger_cls(ipython_profile="default"):
     return shell.debugger_cls
 
 
-def _init_pdb(context=None, ipython_profile=None, commands=[]):
+def _init_pdb(context=None, ipython_profile=None, commands=None):
+    if commands is None:
+        commands = []
+
     if context is None:
-        context = os.getenv("IPDB_CONTEXT_SIZE", get_context_from_config())
+        context = os.getenv("IPDB_CONTEXT_SIZE", None)
+        if context is None:
+            context = get_context_from_config()
 
     if ipython_profile is None:
-        ipython_profile = os.getenv(
-            "IPDB_IPYTHON_PROFILE", get_ipython_profile_from_config()
-        )
+        ipython_profile = os.getenv("IPDB_IPYTHON_PROFILE", None)
+        if ipython_profile is None:
+            ipython_profile = get_ipython_profile_from_config()
 
     debugger_cls = _get_debugger_cls(ipython_profile=ipython_profile)
 

tests/test_config.py

@@ -138,22 +138,6 @@ def test_noenv_nodef_nosetup_pyproject(self):
             self.assertEqual(self.pyproject_context, cfg.getint("ipdb", "context"))
             self.assertRaises(configparser.NoOptionError, cfg.get, "ipdb", "version")
 
-    def test_noenv_nodef_nosetup_pyproject(self):
-        """
-        Setup: $IPDB_CONFIG unset, $HOME/.ipdb does not exist,
-            setup.cfg does not exist, pyproject.toml exists
-        Result: load pyproject.toml
-        """
-        os.unlink(self.env_filename)
-        os.unlink(self.default_filename)
-        os.remove(self.setup_filename)
-        with ModifiedEnvironment(IPDB_CONFIG=None, HOME=self.tmpd):
-            cfg = get_config()
-            # breakpoint()
-            self.assertEqual(["ipdb"], cfg.sections())
-            self.assertEqual(self.pyproject_context, cfg.getint("ipdb", "context"))
-            self.assertRaises(configparser.NoOptionError, cfg.get, "ipdb", "version")
-
     def test_env_nodef_setup_pyproject(self):
         """
         Setup: $IPDB_CONFIG is set, $HOME/.ipdb does not exist,