Removed unused import and improved docstrings.

charmcraft/commands/store/__init__.py

@@ -19,7 +19,6 @@
 import ast
 import hashlib
 import logging
-import os
 import pathlib
 import string
 import textwrap
@@ -287,9 +286,9 @@ class UploadCommand(BaseCommand):
     overview = textwrap.dedent("""
         Upload a charm or bundle to Charmhub.
 
-        Push a charm or bundle to Charmhub where it will be verified for
-        conformance to the packaging standard. This command will finish
-        successfully once the package is approved by Charmhub.
+        Push a charm or bundle to Charmhub where it will be verified.
+        This command will finish successfully once the package is
+        approved by Charmhub.
 
         In the event of a failure in the verification process, charmcraft
         will report details of the failure, otherwise it will give you the

charmcraft/utils.py

@@ -70,10 +70,9 @@ def get_templates_environment(templates_dir):
 
 
 def useful_filepath(filepath):
-    """Convert the string to Path and verify that is a useful file path.
+    """Return a valid Path with user name expansion for filepath.
 
-    It checks that the file exists and it's readable, and that it's actually a
-    file. Also the `~` is expanded to the user's home.
+    CommandError is raised if filepath is not a valid file or is not readable.
     """
     filepath = pathlib.Path(filepath).expanduser()
     if not os.access(str(filepath), os.R_OK):  # access doesn't support pathlib in 3.5