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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 find_max(words):
    """Write a function that accepts a list of strings. The list contains different words. Return the word with maximum number of unique characters. If multiple strings have maximum number of unique characters, return the one which comes first in lexicographical order. find_max(["name", "of", "string"]) == "string" find_max(["name", "enam", "game"]) == "enam" find_max(["aaaaaaa", "bb" ,"cc"]) == ""aaaaaaa" """
    return sorted(words, key = lambda x: (-len(set(x)), x))[0]
