IndentationError: unindent does not match any outer indentation level

[abdzrahim]

I have a problem that I run this code to get word tuples. I got an error below. The code get_words are on below. Can anyone help to solve this problem?

File "chat-med-2.py", line 39 puncRegexp = re.compile('[%s]' % re.escape(string.punctuation) ) ^ IndentationError: unindent does not match any outer indentation level

`def get_words(text):
"""Retrieve the words present in a given string of text.
The return value is a list of tuples where the first member is a lowercase word,
and the second member the number of time it is present in the text. Example:
IN: "Did the cow jump over the moon?"
OUT: dict_items([('cow', 1), ('jump', 1), ('moon', 1), ('?', 1),
('over', 1), ('the', 2), ('did', 1)])
"""
puncRegexp = re.compile('[%s]' % re.escape(string.punctuation))
text = puncRegexp.sub('',text)

wordsRegexpString = '\w+'
wordsRegexp = re.compile(wordsRegexpString)
wordList = wordsRegexp.findall(text.lower())

return Counter(wordsList).items()`