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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 md5sum(content):
    '''Calculate and returns an MD5 checksum for the specified content.

    :param content: text content
    :returns: hex-digest formatted MD5 checksum as a string
    '''
    md5 = hashlib.md5()
    md5.update(force_bytes(content))
    return md5.hexdigest()