1 import keyword

     2 f = open('/home/madhu/pyprogs/pytriads.py')

     3 

     4 freq = {}

     5 for line in f:

     6     words = line.split()

     7     for word in words:

     8         key = word.strip(',.!;?()[]: ')

     9         if keyword.iskeyword(key):

    10             value = freq.get(key, 1)

    11             freq[key] = value + 1

    12 

    13 print freq

    14