README.rst: Fix a bug in Python code #304

Job	Run time
linux_wheels (ubuntu-latest, x86_64, cp39-manylinux_x86_64 cp310-manylinux_x86_64 cp311-manylinux...	6m 56s
windows_wheels_tests (3.11)	1m 24s
windows_wheels_tests (3.9)	1m 24s
windows_wheels_tests (3.10)	1m 30s
windows_wheels_tests (3.13)	1m 30s
linux_wheels (ubuntu-24.04-arm, aarch64, cp39-manylinux_aarch64 cp310-manylinux_aarch64 cp311-man...	7m 54s
windows_wheels_tests (3.12)	1m 32s
osx_wheels_create (x86_64)	9m 42s
docs	3m 16s
osx_wheels_create (arm64)	8m 20s
linux_test_src (ubuntu-24.04-arm)	4m 22s
linux_test_src (ubuntu-latest)	3m 35s
linux_test_wheel (ubuntu-24.04-arm)	48s
linux_test_wheel (ubuntu-latest)	18s
osx_wheels_fuse_test_upload	2m 31s
	55m 2s

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