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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 _multiple_replace(text, search_replace_dict):
 """ Replace multiple things at once in a text. Parameters text : str search_replace_dict : dict Returns ------- replaced_text : str Examples -------- 'bcdeefghijklm' """

    # Create a regular expression from all of the dictionary keys
    regex = re.compile("|".join(map(re.escape, search_replace_dict.keys())))

    # For each match, look up the corresponding value in the dictionary
    return regex.sub(lambda match: search_replace_dict[match.group(0)], text)