Global variables in Python 3 class

Question

How to use a global variable inside the initialiser of a class in Python 3?

for eg

import urllib
from urllib.request import urlopen
class ABC(object):
 def __init__(self):
   x=urlopen('http://www.google.com/').read()

How do I convert x into a global variable?

Renato Todorov · Accepted Answer · 2013-06-21 13:02:18Z

8

You have to declare your variable before the class declaration and use the global statement on the init function:

import urllib
from urllib.request import urlopen

x = None

class ABC(object):

 def __init__(self):
   global x
   x=urlopen('http://www.google.com/').read()

edited Jun 21, 2013 at 13:02

answered Jun 21, 2013 at 12:47

Renato Todorov

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2 Comments

sgp Over a year ago

if I print x it says None. However I wanted it to return the source code.

Renato Todorov Over a year ago

sorry for that, you have to declare global inside the init function and not on the class declaration! I edited the answer, it works now!

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