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subprocess ⚬⃕ᵖʸ｜Documentation｜1st｜20251021005448-00-⌔

subprocess — Subprocess management — Python 3 documentation

subprocess — Subprocess management

Source code: Lib/subprocess.py

The subprocess module allows you to spawn new processes, connect to their input/output/error pipes, and obtain their return codes. This module intends to replace several older modules and functions:

os.system
os.spawn﹡

Information about how the subprocess module can be used to replace these modules and functions can be found in the following sections.

See also: PEP 324 – PEP proposing the subprocess module

Availability: not Android, not iOS, not WASI.

This module is not supported on mobile platforms or WebAssembly platforms.

Printed 2026-06-28.

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