Python无法找到已安装的模块

Question

I've used these modules before, even in a Python script inside a folder where I have other working scripts. Here's my imports:

import os
import sys    
import urllib.request as urllib, simplejson as json, requests
import subprocess
import Popen, PIPE
import time

I get this in my console:

Traceback (most recent call last):
  File "party.py", line 4, in <module>
    import urllib.request as urllib, simplejson as json, requests
ImportError: No module named request

How come? I've tried

sudo pip install request

..but with no luck. What is causing this?

Answer 1

what python version are you using? urllib.request seems to be python3

v2.7

>>> import urllib.request
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named request
>>> 

v3.3

>>> import urllib.request
>>> urllib.request
<module 'urllib.request' from '/usr/lib/python3.3/urllib/request.py'>
>>>