3. Modules
Better way to orgnizing code
can define classes,functions and variables
Import a module:
import MODULE_NAME
form MODULE_NAME import ….
4. Creating Module
$ vim calculator.py
#!/usr/bin/env python
'''
This is a simple calculator
add for addition
sub for subtraction
'''
def add(a, b):
return a+b
def sub(a, b):
return a-b
~
~
5. Creating Module
$ vim calculator.py
#!/usr/bin/env python
import calculator
print '2 + 3 is equal to : %d ' % calculator.add(2,3)
print '10 - 3 is equal to : %d ' % calculator.sub(10,3)
~
~
$ chmod a+x testcalc.py
$ ./testcalc.py
2 + 3 is equal to : 5
10 - 3 is equal to : 7
6. from … import
$ vim testcalc.py
#!/usr/bin/env python
from calculator import add
print '2 + 3 is equal to : %d ' % calculator.add(2,3)
print '10 - 3 is equal to : %d ' % calculator.sub(10,3)
~
$ ./testcalc.py
2 + 3 is equal to : 5
Traceback (most recent call last):
File "./testcalc.py", line 6, in <module>
print '10 - 3 is equal to : %d ' % sub(10,3)
NameError: name 'sub' is not defined
7. This work is licensed under the Creative Commons
Attribution-NoDerivs 3.0 Unported License.
To view a copy of this license, visit
http://creativecommons.org/licenses/by-nd/3.0/
Copyright 2013 Mohammad reza Kamalifard.
All rights reserved.
