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Python is "default local"
Introduction to Python example from a Well House Consultants training course
More on Introduction to Python [link]

This example is described in the following article(s):
   • Default local - a good choice by the author of Python - [link]

Source code: scope Module: Y101
# Python is "default local"

value = 17.7 # value in main code

def counter():
        value = 7 # local to function (in Python, THANK GOODNESS!)
        return 3 * value
cx = counter()
print("The value is",value,"and the counter gave me",cx)

def counter():
        global value
        value = 7 # this one shared with main code
        return 3 * value
cx = counter()
print("The value is",value,"and the counter gave me",cx)

""" Shared with main code / Sample output

WomanWithCat:y101 grahamellis$ python2 scope
('The value is', 17.7, 'and the counter gave me', 21)
('The value is', 7, 'and the counter gave me', 21)
WomanWithCat:y101 grahamellis$ python3 scope
The value is 17.7 and the counter gave me 21
The value is 7 and the counter gave me 21
WomanWithCat:y101 grahamellis$


Learn about this subject
This module and example are covered on the following public courses:
 * Deploying LAMP - Linux, Apache, MySQL, Perl/PHP
 * Linux Web Server
 * Learning to program in Python
 * Python Programming
Also available on on site courses for larger groups

Books covering this topic
Yes. We have over 700 books in our library. Books covering Python are listed here and when you've selected a relevant book we'll link you on to Amazon to order.

Other Examples
This example comes from our "Introduction to Python" training module. You'll find a description of the topic and some other closely related examples on the "Introduction to Python" module index page.

Full description of the source code
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