Leetcode 49 Anagrams

class Solution:
    # @param {string[]} strs
    # @return {string[]}
    def anagrams(self, strs):
        dict = {}
        for word in strs:
            sortedword = ''.join(sorted(word))
            dict[sortedword] = [word] if sortedword not in dict else dict[sortedword] + [word]
        res = []
        for item in dict:
            if len(dict[item]) > 1: res += dict[item]
        return res