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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 split_package(package):
 """ Split package in name, version arch and build tag. """

    name = ver = arch = build = []
    split = package.split("-")
    if len(split) > 2:
        build = split[-1]
        build_a, build_b = "", ""
        build_a = build[:1]
        if build[1:2].isdigit():
            build_b = build[1:2]
        build = build_a + build_b
        arch = split[-2]
        ver = split[-3]
        name = "-".join(split[:-3])
    return [name, ver, arch, build]