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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 cf_tokenize(s):
 """ Parses UserData for Cloudformation helper functions. http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/user-data.html http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference.html http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/quickref-cloudformation.html#scenario-userdata-base64 It breaks apart the given string at each recognized function (see HELPERS) and instantiates the helper function objects in place of those. Returns a list of parts as a result. Useful when used with Join() and Base64() CloudFormation functions to produce user data. ie: Base64(Join('', cf_tokenize(userdata_string))) """

    t = []
    parts = split_re.split(s)
    for part in parts:
        cf_func = replace_re.search(part)
        if cf_func:
            args = [a.strip("'\" ") for a in cf_func.group("args").split(",")]
            t.append(HELPERS[cf_func.group("helper")](*args).data)
        else:
            t.append(part)
    return t