May 2018
Intermediate to advanced
380 pages
9h 37m
English
Content preview from Secret Recipes of the Python Ninja
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How it works...
In this example, the whole video package comprises two sub-packages, video formats and video effects, with video effects having several sub-packages of its own. Within each package, each .py file is a separate module. During module importation, Python looks for packages on sys.path.
The inclusion of the __init__.py files is necessary so Python will treat the directories as packages. This prevents directories with common names from shadowing Python modules further along the search path. They also allow calling modules as stand-alone programs via the -m option, when calling Python programs.
Initialization files are normally empty but can contain initialization code for the package. They can also contain an __all__ list, which ...
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