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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 delete_account_metadata(self, prefix=None):
 """ Removes all metadata matching the specified prefix from the account. By default, the standard account metadata prefix ('X-Account-Meta-') is prepended to the header name if it isn't present. For non-standard headers, you must include a non-None prefix, such as an empty string. """

        # Add the metadata prefix, if needed.
        if prefix is None:
            prefix = ACCOUNT_META_PREFIX
        curr_meta = self.get_account_metadata(prefix=prefix)
        for ckey in curr_meta:
            curr_meta[ckey] = ""
        new_meta = _massage_metakeys(curr_meta, prefix)
        uri = "/"
        resp, resp_body = self.api.method_post(uri, headers=new_meta)
        return 200 <= resp.status_code <= 299