initial creation

py3interm/EXAMPLES/os_walk_ex.py

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+#!/usr/bin/env python
+"""print size of every python file whose name starts with "m" """
+
+import os
+
+START_DIR = ".."  # start in root of student files  # <1>
+
+
+def main():
+    for currdir, subdirs, files in os.walk(START_DIR):  # <2>
+        for file in files:  # <3>
+            if file.endswith('.py') and file.startswith('m'):
+                fullpath = os.path.join(currdir, file)  # <4>
+                fsize = os.path.getsize(fullpath)
+                print("{:8d} {:s}".format(fsize, fullpath))
+
+
+if __name__ == '__main__':
+    main()