cython

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from cython.cimports.libc.stdlib import free
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from cython.cimports.c_func import c_call_returning_a_c_string
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py_string = cython.declare(bytes)
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c_string = cython.declare(cython.p_char, c_call_returning_a_c_string())
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try:
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    py_string = c_string
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finally:
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    free(c_string)
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