Tidy up comments and syntax, also add main() func.

Author: Jared Manning

folder_size.py

@@ -1,22 +1,27 @@
-# Script Name		: folder_size.py
-# Author				: Craig Richards
-# Created				: 19th July 2012
-# Last Modified		: 
-# Version				: 1.0
+# Script Name   : folder_size.py
+# Author        : Craig Richards
+# Created       : 19th July 2012
+# Last Modified	: 14 February 2016
+# Version       : 1.0.1
 
-# Modifications		: 
+# Modifications : 1.0.1 - Tidy up comments and syntax, add main() function
 
-# Description			: This will scan the current directory and all subdirectories and display the size.
+# Description   : This will scan the current directory and all subdirectories and display the size.
 
-import os 														# Load the library module
+import os       # Load the library module
 
-directory = '.'													# Set the variable directory to be the current directory
-dir_size = 0													# Set the size to 0
-for (path, dirs, files) in os.walk(directory):			# Walk through all the directories
-  for file in files:												# Get all the files
-    filename = os.path.join(path, file)
-    dir_size += os.path.getsize(filename)			# Get the sizes, the following lines print the sizes in bytes, Kb, Mb and Gb
-print "Folder Size in Bytes = %0.2f Bytes" % (dir_size)
-print "Folder Size in Kilobytes = %0.2f KB" % (dir_size/1024.0)
-print "Folder Size in Megabytes = %0.2f MB" % (dir_size/1024/1024.0)
-print "Folder Size in Gigabytes = %0.2f GB" % (dir_size/1024/1024/1024.0)
+directory = '.' # Set the variable directory to be the current directory
+dir_size = 0    # Set the size to 0
+
+def main():
+    for (path, dirs, files) in os.walk(directory):      # Walk through all the directories
+        for file in files:                              # Get all the files
+            filename = os.path.join(path, file)
+            dir_size += os.path.getsize(filename)       # Get the sizes, the following lines print the sizes in bytes, Kb, Mb and Gb
+    print "Folder Size in Bytes = %0.2f Bytes" % (dir_size)
+    print "Folder Size in Kilobytes = %0.2f KB" % (dir_size/1024.0)
+    print "Folder Size in Megabytes = %0.2f MB" % (dir_size/1024/1024.0)
+    print "Folder Size in Gigabytes = %0.2f GB" % (dir_size/1024/1024/1024.0)
+
+if __name__ == '__main__':
+    main()