ModuleNotFound 在 python 3.7

Question

i am getting this error in cmd prompt: No module named 'urllib.request' i have installed pip and requests packages still i am getting this

import urllib.request, urllib.parse, urllib.error
fhand = urllib.request.open('https://data.pr4e.org/romeo.txt')
for line in fhand:
    print(line.decode().strip())

Answer 1

You may use the code below:

import urllib
urllib.urlopen(url)

for your use case

from urllib import request, parse, error
fhand =request.urlopen('https://data.pr4e.org/romeo.txt')
for line in fhand:
    print(line.decode().strip())

I've seen Python 3 has depreciated urllib itself and replaced it with a number of libraries including urllib.request,if above doesn't work, I have found a hack for

Try using urllib2 :

https://docs.python.org/2/library/urllib2.html

This line should work to replace urlopen:

from urllib2 import urlopen

Tested in Python 2.7

Answer 2

There are two independent libraries:

1. The standard library package urllib provides urllib.request.urlopen() (not open )

As this is part of the Python, nothing needs to be installed with pip .

But your code should not fail with import error, the examples for Python 3.7 import the module in the same way: https://docs.python.org/3.7/library/urllib.request.html#examples

Please update your question and provide more information about the error.

2. The popular and superior package requests has requests.get() :

You wrote, that you have installed this package with pip . This was not necessary.