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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 _read_header(f):
 """Read the mesh format block specified as version(ASCII double; currently 4.1) file-type(ASCII int; 0 for ASCII mode, 1 for binary mode) data-size(ASCII int; sizeof(size_t)) < int with value one; only in binary mode, to detect endianness > though here the version is left as str """


    # http://gmsh.info/doc/texinfo/gmsh.html#MSH-file-format

    line = f.readline().decode("utf-8")
    # Split the line
    # 4.1 0 8
    # into its components.
    str_list = list(filter(None, line.split()))
    fmt_version = str_list[0]
    assert str_list[1] in ["0", "1"]
    is_ascii = str_list[1] == "0"
    data_size = int(str_list[2])
    if not is_ascii:
        # The next line is the integer 1 in bytes. Useful for checking
        # endianness. Just assert that we get 1 here.
        one = f.read(struct.calcsize("i"))
        assert struct.unpack("i", one)[0] == 1
        line = f.readline().decode("utf-8")
        assert line == "\n"
    line = f.readline().decode("utf-8")
    assert line.strip() == "$EndMeshFormat"
    return fmt_version, data_size, is_ascii