Python · Theory

sys module

Theory

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sys module is a Python idea you use in small programs. Learn it with one example, not a long speech.

For sys module — import math brings tools in. A .py file can be a module. venv keeps project packages separate.

sys module — output — version then script name. argv[0] is the file being run.

Exam tip

Print sys.argv[0].

# sys
import sys
print(sys.version.split()[0])
print(sys.argv[0])

sys module — output: version then script name. argv[0] is the file being run.