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Packages in Python
A package is a hierarchical file directory structure that defines a single Python application environment that consists of modules and subpackages and sub-subpackages, and so on.
Consider a file Pots.py available in Phone directory. This file has following line of source code −
#!/usr/bin/python def Pots(): print "I'm Pots Phone"
Similar way, we have another two files having different functions with the same name as above −
- Phone/Isdn.py file having function Isdn()
- Phone/G3.py file having function G3()
Now, create one more file __init__.py in Phone directory −
- Phone/__init__.py
To make all of your functions available when you've imported Phone, you need to put explicit import statements in __init__.py as follows −
from Pots import Pots from Isdn import Isdn from G3 import G3
After you add these lines to __init__.py, you have all of these classes available when you import the Phone package.
#!/usr/bin/python # Now import your Phone Package. import Phone Phone.Pots() Phone.Isdn() Phone.G3()
When the above code is executed, it produces the following result −
I'm Pots Phone I'm 3G Phone I'm ISDN Phone
In the above example, we have taken example of a single functions in each file, but you can keep multiple functions in your files. You can also define different Python classes in those files and then you can create your packages out of those classes.
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