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                                                                                                                                                                                     from landscape.lib.hashlib import md5


def build_script(interpreter, code):
    """
    Concatenates a interpreter and script into an executable script.
    """
    return u"#!{}\n{}".format(interpreter or u"", code or u"")


def generate_script_hash(script):
    """
    Return a hash for a given script.
    """
    encoded_script = script.encode("utf-8")
    # As this hash is sent in message which requires bytes in the schema, we
    # have to encode here.
    return md5(encoded_script).hexdigest().encode("ascii")