word count: python

wc.py

#readin and filter
txt = [c for c in open('lorem.txt').read().lower() if c.isalpha() or c==' ']

#groupBy in a dictionary
wc = dict()
for w in ''.join(txt).split():
  wc[w] = wc.setdefault(w, 0) + 1

#output
for k,v in wc.iteritems():
   print('{1} {0}'.format(k,v))