pocketpy/docs/modules/sys.md

---

icon: package

label: sys

sys

Interpreter identification, host-supplied arguments, and recursion limits.

Member	Meaning
version	pocketpy's version string, such as '2.2.0'; not a CPython version.
platform	Target platform identifier, such as win32, linux, darwin, android, ios, or emscripten.
argv	Argument list supplied by the host.
getrecursionlimit()	Current Python call-depth limit.
setrecursionlimit(limit)	Change the limit; values at or below the current depth raise ValueError.

import sys

print(sys.version, sys.platform)
print(sys.argv)
original = sys.getrecursionlimit()
sys.setrecursionlimit(original + 100)
assert sys.getrecursionlimit() == original + 100
sys.setrecursionlimit(original)

The initial recursion limit is 1000. Raising it increases the depth the runtime allows; it does not increase the native stack or VM value-stack capacity.

In an embedded VM, argv starts empty unless the host sets it. The standalone executable passes command-line entries after its executable name through py_sys_setargv(), including interpreter flags. Do not assume CPython's argument filtering.

This module does not provide sys.path, sys.modules, or stream objects such as sys.stdout. Use host callbacks to customize imports and output.