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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 get_libmarquise_header():
 """Read the libmarquise header to extract definitions."""

    # Header file is packaged in the same place as the rest of the
    # module.
    header_path = os.path.join(os.path.dirname(__file__), "marquise.h")
    with open(header_path) as header:
        libmarquise_header_lines = header.readlines()

    libmarquise_header_lines = [ line for line in libmarquise_header_lines if not line.startswith('#include ') and not line.startswith('#define ') ]
    libmarquise_header_lines = [ line for line in libmarquise_header_lines if not line.startswith('#include ') ]
    # We can't #include glib so FFI doesn't know what a GTree is. Leave it for
    # later and let the C compiler resolve it when we call FFI.verify()
    libmarquise_header_lines = [ line.replace("GTree *sd_hashes;", "...;") for line in libmarquise_header_lines ]
    return ''.join(libmarquise_header_lines)