Add docstring

87ceb61b · Jason R. Coombs · 653987e5 · 87ceb61b
Commit 87ceb61b authored Nov 28, 2015 by Jason R. Coombs
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pkg_resources/__init__.py pkg_resources/__init__.py +4 -0

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--- a/pkg_resources/__init__.py
+++ b/pkg_resources/__init__.py
@@ -2467,6 +2467,10 @@ def _remove_md5_fragment(location):
 def _version_from_file(lines):
+    """
+    Given an iterable of lines from a Metadata file, return
+    the value of the Version field, if present, or None otherwise.
+    """
    is_version_line = lambda line: line.lower().startswith('version:')
    version_lines = filter(is_version_line, lines)
    line = next(iter(version_lines), '')