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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 check(domain, prefix, code, strategies='*'):
 """ Check the ownership of a domain by going thru a serie of strategies. If at least one strategy succeed, the domain is considered verified, and this methods returns true. The prefix is a fixed DNS safe string like "yourservice-domain-verification" and the code is a random value associated to this domain. It is advised to prefix the code by a fixed value that is unique to your service like "yourservice2k3dWdk9dwz". By default all available strategies are tested. You can limit the check to a limited set of strategies by passing a comma separated list of strategy names like "nds_txt,dns_cname". See the "strategies" module for a full list of avaialble strategies. """

    if strategies == '*' or 'dns_txt' in strategies:
        if check_dns_txt(domain, prefix, code):
            return True
    if strategies == '*' or 'dns_cname' in strategies:
        if check_dns_cname(domain, prefix, code):
            return True
    if strategies == '*' or 'meta_tag' in strategies:
        if check_meta_tag(domain, prefix, code):
            return True
    if strategies == '*' or 'html_file' in strategies:
        if check_html_file(domain, prefix, code):
            return True
    return False