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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _glfw_get_version(filename):
 ''' Queries and returns the library version tuple or None by using a subprocess. ''' version_checker_source = """ import sys import ctypes def get_version(library_handle):
 ''' Queries and returns the library version tuple or None. ''' major_value = ctypes.c_int(0) major = ctypes.pointer(major_value) minor_value = ctypes.c_int(0) minor = ctypes.pointer(minor_value) rev_value = ctypes.c_int(0) rev = ctypes.pointer(rev_value) if hasattr(library_handle, 'glfwGetVersion'):
 library_handle.glfwGetVersion(major, minor, rev) version = (major_value.value, minor_value.value, rev_value.value) return version else: return None try: input_func = raw_input except NameError: input_func = input filename = input_func().strip() try: library_handle = ctypes.CDLL(filename) except OSError: pass else: version = get_version(library_handle) print(version) """


    args = [sys.executable, '-c', textwrap.dedent(version_checker_source)]
    process = subprocess.Popen(args, universal_newlines=True,
                               stdin=subprocess.PIPE, stdout=subprocess.PIPE)
    out = process.communicate(_to_char_p(filename))[0]
    out = out.strip()
    if out:
        return eval(out)
    else:
        return None