Make mypy happy again, minor refactoring using is_path instead of checking isinstance(handle, str) twice

Author: leonarduschen

pandas/io/common.py

@@ -649,7 +649,7 @@ def get_handle(
 
     # Only for write methods
     if "r" not in mode and is_path:
-        check_parent_directory(handle)
+        check_parent_directory(str(handle))
 
     if compression:
         # compression libraries do not like an explicit text-mode
@@ -714,7 +714,7 @@ def get_handle(
         assert not isinstance(handle, str)
         handles.append(handle)
 
-    elif isinstance(handle, str):
+    elif is_path:
         # Check whether the filename is to be opened in binary mode.
         # Binary mode does not support 'encoding' and 'newline'.
         if ioargs.encoding and "b" not in ioargs.mode:

pandas/io/formats/format.py

@@ -1150,7 +1150,7 @@ def get_buffer(buf: FilePathOrBuffer[str] | None, encoding: str | None = None):
     if hasattr(buf, "write"):
         yield buf
     elif isinstance(buf, str):
-        check_parent_directory(buf)
+        check_parent_directory(str(buf))
         with open(buf, "w", encoding=encoding, newline="") as f:
             # GH#30034 open instead of codecs.open prevents a file leak
             #  if we have an invalid encoding argument.