September 2026
1051 pages
35h 4m
English
Content preview from Python 3 - Second Edition
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18.3 Packages
Python allows you to encapsulate multiple modules in one package. This is advantageous if these modules belong together thematically. In contrast to a single module, a package can contain any number of other packages, which in turn can contain modules or packages.
To create a package, a subfolder must be created in the program directory. The name of the folder must correspond to the name of the package. Additionally,[ 86 ] this folder can contain a program file named __init__.py (note the two underscores both before and after init here). This file contains initialization code that’s executed once when the package is imported.
Note
If a package and a module with the same name exist in the same directory, this will cause a name ...
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