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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 safe_makedirs(path):
 """A safe function for creating a directory tree."""

    try:
        os.makedirs(path)
    except OSError as err:
        if err.errno == errno.EEXIST:
            if not os.path.isdir(path):
                raise
        else:
            raise