string = "hi"
 
f = open("filename.txt")
contents = f.read()
f.close()
 
print "Number of '" + string + "' in your file is:", contents.count("hi")

string = "hi"
 
# test text
text = "hi, I am a history buff with a hideous hidrosis history"
 
print "Number of '" + string + "' in your file is:", text.count("hi")
 
"""
my result -->
Number of 'hi' in your file is: 5
"""

paragraph = '''This is a test sentence.  We will look for hi in this sentence.
If we find 'hi', we want to keep count of it.  Remember, hi
can be Hi or hi.  Hi can also have characters before or
after it ie (hi. hi, hi:).  There should be a total of 10 'hi'
in this sentence, not any more for words like 'this' or
'hippo' or 'hiccups' '''
 
word = 'hi'
 
for x in range(33,64):
    char = chr(x)
    paragraph = paragraph.replace(char, '')
 
for x in range(91,97):
    char = chr(x)
    paragraph = paragraph.replace(char, '')
 
listParagraph = paragraph.split()
reducedList = [n for n in listParagraph if len(n) == len(word)]
reducedParagraph = ' '.join(reducedList)
reducedParagraph = reducedParagraph.lower()
 
count = reducedParagraph.count(word.lower())
if count == 0:
    print "The word", "'" + word + "'", "does not occur in this section of text."
else:
    print "The word", "'" + word + "'", "occurs", count, "times in this section."
 
 

reducedList = [n for n in listParagraph if len(n) == len(word)]
## replace with this
reduced_list = [n for n in list_paragraph if word == n.lower()]
if len(reduced_list):
    print "The word", "'" + word + "'", "occurs", len(reduced_list), "times in this section."
else:
    print "The word", "'" + word + "'", "does not occur in this section of text."
#
# anyway, here is another solution
#
paragraph = '''This is a test sentence.  We will look for hi in this sentence.
If we find 'hi', we want to keep count of it.  Remember, hi
can be Hi or hi.  Hi can also have characters before or
after it ie (hi. hi, hi:).  There should be a total of 10 'hi'
in this sentence, not any more for words like 'this' or
'hippo' or 'hiccups' '''

word='hi'
p_list = paragraph.split()
ctr=0
for p_word in p_list:
   p_word = p_word.lower()
   if p_word == word:
      ctr += 1
   elif not p_word.isalpha():     ## has non-alpha characters
      new_word = ""
      for chr in p_word:
         if chr.isalpha():
            new_word += chr
      if new_word == word:
         ctr += 1
print "The word '%s' was found %d times" % (word, ctr)