Python : ImportError: No module named requests

I am new to PyDev and Python and trying to run a python program on LiClipse ( version: 2.5.4....) on Windows 7 and seeing this error. This program is importing requests.

I am using python 2.7

Did some research on this error and according to the information:

For Windows without PowerShell 3 or for installation without a command-line, download ez_setup.py using your preferred web browser or other technique and “run” that file.

from : https://pypi.python.org/pypi/setuptools

I ran and installed as :

c:\opts\Python27>python.exe ez_setup.py

Looks like it's been installed as last few lines are :

removing 'build\bdist.win-amd64\egg' (and everything under it)
Processing setuptools-21.0.0-py2.7.egg
Copying setuptools-21.0.0-py2.7.egg to c:\opts\python27\lib\site-packages
Adding setuptools 21.0.0 to easy-install.pth file
Installing easy_install-script.py script to c:\opts\Python27\Scripts
Installing easy_install.exe script to c:\opts\Python27\Scripts
Installing easy_install-2.7-script.py script to c:\opts\Python27\Scripts
Installing easy_install-2.7.exe script to c:\opts\Python27\Scripts

Installed c:\opts\python27\lib\site-packages\setuptools-21.0.0-py2.7.egg
Processing dependencies for setuptools==21.0.0
Finished processing dependencies for setuptools==21.0.0

Restarted Liclipse but the problem did not go away. Any help?

Part of the code:

#!/usr/bin/python
# -*- coding: utf-8 -*-

import sys, requests, json, argparse, unittest, hmac, base64, urllib, urlparse, hashlib

class ClassificationCategory:

........

def post(self, endpoint, payload = None, params = None, headers = None, files = None):
    if payload is not None:
        data = payload if isinstance(payload, basestring) else json.dumps(payload)
    else:
        data = None
    self.res = requests.Session().send(self.prepare_request(endpoint, method = 'POST', params = params, data = data, files = files, headers = self.prepare_headers(headers)), verify = False)
    return self

instance=ClassificationCategory()
instance.post(......)

Thanks Busfault. Your response was helpful.

'requests' does not come as default with Python. Need to install separately. One way to install is how busfault suggested above. But for some reasons this was not working for me. I had this error:

 C:\opts\Python27>pip install requests
 Collecting requests
 Could not find a version that satisfies the requirement requests (from versions: )
 No matching distribution found for requests

Hence I resolved it this way:

Download from : https://pypi.python.org/pypi/requests/2.7.0#downloads

Then Unzip and install as : python setup.py install (Make sure Python is in your path)