Don't hardcore library name in Python example.
Don't hardcore library name in Python example.

References #1.

zsiciarz/rust-ffi-stringtools,zsiciarz/rust-ffi-stringtools,zsiciarz/rust-ffi-stringtools,zsiciarz/rust-ffi-stringtools,zsiciarz/rust-ffi-stringtools,zsiciarz/rust-ffi-stringtools,zsiciarz/rust-ffi-stringtools