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diff --git a/lib/python2.7/Tools/scripts/diff.py b/lib/python2.7/Tools/scripts/diff.py
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+++ b/lib/python2.7/Tools/scripts/diff.py
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+#!/usr/bin/env python2
+""" Command line interface to difflib.py providing diffs in four formats:
+
+* ndiff:    lists every line and highlights interline changes.
+* context:  highlights clusters of changes in a before/after format.
+* unified:  highlights clusters of changes in an inline format.
+* html:     generates side by side comparison with change highlights.
+
+"""
+
+import sys, os, time, difflib, optparse
+
+def main():
+
+    usage = "usage: %prog [options] fromfile tofile"
+    parser = optparse.OptionParser(usage)
+    parser.add_option("-c", action="store_true", default=False, help='Produce a context format diff (default)')
+    parser.add_option("-u", action="store_true", default=False, help='Produce a unified format diff')
+    parser.add_option("-m", action="store_true", default=False, help='Produce HTML side by side diff (can use -c and -l in conjunction)')
+    parser.add_option("-n", action="store_true", default=False, help='Produce a ndiff format diff')
+    parser.add_option("-l", "--lines", type="int", default=3, help='Set number of context lines (default 3)')
+    (options, args) = parser.parse_args()
+
+    if len(args) == 0:
+        parser.print_help()
+        sys.exit(1)
+    if len(args) != 2:
+        parser.error("need to specify both a fromfile and tofile")
+
+    n = options.lines
+    fromfile, tofile = args
+
+    fromdate = time.ctime(os.stat(fromfile).st_mtime)
+    todate = time.ctime(os.stat(tofile).st_mtime)
+    fromlines = open(fromfile, 'U').readlines()
+    tolines = open(tofile, 'U').readlines()
+
+    if options.u:
+        diff = difflib.unified_diff(fromlines, tolines, fromfile, tofile, fromdate, todate, n=n)
+    elif options.n:
+        diff = difflib.ndiff(fromlines, tolines)
+    elif options.m:
+        diff = difflib.HtmlDiff().make_file(fromlines,tolines,fromfile,tofile,context=options.c,numlines=n)
+    else:
+        diff = difflib.context_diff(fromlines, tolines, fromfile, tofile, fromdate, todate, n=n)
+
+    sys.stdout.writelines(diff)
+
+if __name__ == '__main__':
+    main()