diff --git a/src/docformatter/configuration.py b/src/docformatter/configuration.py
index 248ddb7..afed2c7 100644
--- a/src/docformatter/configuration.py
+++ b/src/docformatter/configuration.py
@@ -367,6 +367,6 @@ def _do_read_parser_configuration(self) -> None:
         ]:
             if _section in config.sections():
                 self.flargs_dct = {
-                    k: v if isinstance(v, list) else str(v)
+                    k: v if isinstance(v, list) else v.split() if len(v.split()) > 1 else str(v)
                     for k, v in config[_section].items()
                 }
diff --git a/src/docformatter/util.py b/src/docformatter/util.py
index f397c3b..986db2c 100644
--- a/src/docformatter/util.py
+++ b/src/docformatter/util.py
@@ -26,11 +26,7 @@
 # Standard Library Imports
 import os
 import re
-import sysconfig
-
-unicode = str
-
-_PYTHON_LIBS = set(sysconfig.get_paths().values())
+from glob import glob
 
 
 def find_py_files(sources, recursive, exclude=None):
@@ -43,45 +39,16 @@ def find_py_files(sources, recursive, exclude=None):
 
     Return: yields paths to found files.
     """
-
-    def not_hidden(name):
-        """Return True if file 'name' isn't .hidden."""
-        return not name.startswith(".")
-
-    def is_excluded(name, exclude):
-        """Return True if file 'name' is excluded."""
-        return (
-            any(
-                re.search(re.escape(str(e)), name, re.IGNORECASE)
-                for e in exclude
-            )
-            if exclude
-            else False
-        )
-
+    if exclude:
+        exclude_pattern =  "|".join(exclude)
     for name in sorted(sources):
         if recursive and os.path.isdir(name):
-            for root, dirs, children in os.walk(unicode(name)):
-                dirs[:] = [
-                    d
-                    for d in dirs
-                    if not_hidden(d) and not is_excluded(d, _PYTHON_LIBS)
-                ]
-                dirs[:] = sorted(
-                    [d for d in dirs if not is_excluded(d, exclude)]
-                )
-                files = sorted(
-                    [
-                        f
-                        for f in children
-                        if not_hidden(f) and not is_excluded(f, exclude)
-                    ]
-                )
-                for filename in files:
-                    if filename.endswith(".py") and not is_excluded(
-                        root, exclude
-                    ):
-                        yield os.path.join(root, filename)
+            all_files = glob(f"{name}/**/*[.py]", recursive=True)
+            for filename in all_files:
+                if exclude:
+                    if re.search(exclude_pattern, filename):
+                        continue
+                yield filename
         else:
             yield name