Adds a __repr__ to graph.

[pyutils.git] / src / pyutils / files / directory_filter.py

diff --git a/src/pyutils/files/directory_filter.py b/src/pyutils/files/directory_filter.py
index d7499a2622960449673f283c9426a20d7d3bb251..243056e9d58191150271536545b0eea5bce36198 100644 (file)
--- a/src/pyutils/files/directory_filter.py
+++ b/src/pyutils/files/directory_filter.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 
-# © Copyright 2021-2022, Scott Gasch
+# © Copyright 2021-2023, Scott Gasch
 
 """This module contains two classes meant to help reduce unnecessary disk
 I/O operations:
@@ -30,6 +30,9 @@ class DirectoryFileFilter(object):
     content to-be-written is identical to the contents of the file on
     disk allowing calling code to safely skip the write.
 
+    Raises:
+        ValueError: directory doesn't exist
+
     >>> testfile = '/tmp/directory_filter_text_f39e5b58-c260-40da-9448-ad1c3b2a69c2.txt'
     >>> contents = b'This is a test'
     >>> with open(testfile, 'wb') as wf:
@@ -70,7 +73,7 @@ class DirectoryFileFilter(object):
         for direntry in os.scandir(self.directory):
             if direntry.is_file(follow_symlinks=True):
                 mtime = direntry.stat(follow_symlinks=True).st_mtime
-                path = f'{self.directory}/{direntry.name}'
+                path = f"{self.directory}/{direntry.name}"
                 self._update_file(path, mtime)
 
     def _update_file(self, filename: str, mtime: Optional[float] = None):
@@ -87,7 +90,7 @@ class DirectoryFileFilter(object):
         if self.mtime_by_filename.get(filename, 0) != mtime:
             md5 = file_utils.get_file_md5(filename)
             logger.debug(
-                'Computed/stored %s\'s MD5 at ts=%.2f (%s)', filename, mtime, md5
+                "Computed/stored %s's MD5 at ts=%.2f (%s)", filename, mtime, md5
             )
             self.mtime_by_filename[filename] = mtime
             self.md5_by_filename[filename] = md5
@@ -110,11 +113,11 @@ class DirectoryFileFilter(object):
         """
         self._update_file(filename)
         file_md5 = self.md5_by_filename.get(filename, 0)
-        logger.debug('%s\'s checksum is %s', filename, file_md5)
+        logger.debug("%s's checksum is %s", filename, file_md5)
         mem_hash = hashlib.md5()
         mem_hash.update(proposed_contents)
         md5 = mem_hash.hexdigest()
-        logger.debug('Item\'s checksum is %s', md5)
+        logger.debug("Item's checksum is %s", md5)
         return md5 != file_md5
 
 
@@ -173,7 +176,9 @@ class DirectoryAllFilesFilter(DirectoryFileFilter):
             self.md5_by_filename[filename] = md5
             self.all_md5s.add(md5)
 
-    def apply(self, proposed_contents: Any, ignored_filename: str = None) -> bool:
+    def apply(
+        self, proposed_contents: Any, ignored_filename: Optional[str] = None
+    ) -> bool:
         """Call this before writing a new file to directory with the
         proposed_contents to be written and it will return a value that
         indicates whether the identical contents is already sitting in
@@ -196,7 +201,7 @@ class DirectoryAllFilesFilter(DirectoryFileFilter):
         return md5 not in self.all_md5s
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     import doctest
 
     doctest.testmod()