__version__ — Easy Examples

Convention for storing a package or module's version string

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Accessing __version__

How to access and use __version__.

python
# __version__ holds package version info
import sys
print(sys.version)
print(sys.version_info)

# Many packages define __version__
import json
print(hasattr(json, "__version__"))

__version__ is a special attribute that convention for storing a package or module's version string.

__version__ in practice

Using __version__ in everyday code.

python
# More __version__ examples
print("__version__ is a special Python attribute")

# Every object has certain dunder attributes
obj = object()
attrs = [a for a in dir(obj) if a.startswith("__")]
print(f"object has {len(attrs)} dunder attributes")

Understanding __version__ helps you introspect and debug Python objects.

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