Getting urlib2 not defined error

Hi I'm new to programming. I'm using python 2.7. I have downloaded the repository, unzipped it and had run the command pip install -r requirements.txt too to install the requirements. But i'm getting name 'urlib2' is not defined error when i run Main.py. Also, when i try to run Exporter.py, i'm getting a syntax error. Please find the error details below:

MacBook-Pro:GetOldTweets-python-master Pranay$ python Main.py
Traceback (most recent call last):
File "Main.py", line 36, in
main()
File "Main.py", line 19, in main
tweet = got.manager.TweetManager.getTweets(tweetCriteria)[0]
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/GetOldTweets-python-master/got3/manager/TweetManager.py", line 21, in getTweets
json = TweetManager.getJsonReponse(tweetCriteria, refreshCursor, cookieJar, proxy)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/GetOldTweets-python-master/got3/manager/TweetManager.py", line 123, in getJsonReponse
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookieJar))
NameError: name 'urllib2' is not defined

cBook-Pro:GetOldTweets-python-master Pranay$ python Exporter.py -h
File "Exporter.py", line 14
print f.read()
^
SyntaxError: invalid syntax

Can someone please help on this issue. Thanks.