Bug report

Bug description:

import inspect
def source_error(*args):
    frame = inspect.currentframe()
    if frame is None:
        return
    frame = frame.f_back
    if frame is None:
        return
    print(inspect.getsource(frame))
def demo():
    loops = (
        None for _ in [0] if source_error(True)
    )
    list(loops)
demo()

Expected output:

def demo():
    loops = (
        None for _ in [0] if source_error(True)
    )
    list(loops)

Actual output:

    loops = (

CPython versions tested on:

CPython main branch

Operating systems tested on:

Linux

Linked PRs

gh-137477: Extend regex pattern check in inspect.findsource #137479
gh-137477: Fix inspect.getblock() for generator expressions #137488
[3.14] gh-137477: Fix inspect.getblock() for generator expressions (GH-137488) #137993
[3.13] gh-137477: Fix inspect.getblock() for generator expressions (GH-137488) #137995