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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_environ_list(name, default=None):
 """Return the split colon-delimited list from an environment variable. Returns an empty list if the variable didn't exist. """

    packed = os.environ.get(name)
    if packed is not None:
        return packed.split(':')
    elif default is not None:
        return default
    else:
        return []