[英]Multiply two lists with dicts python
list1 = [{'the': '0.181'}, {'to': '0.115'}, {'a': '0.093'}, {'of': '0.084'}, {'and': '0.078'}]
list2 = [{'the': '1.010'}, {'to': '1.010'}, {'a': '1.000'}, {'of': '1.102'}, {'and': '1.228'}]
結果我試圖得到一個這樣的新列表:
[{'the': 'list1 *list2'}, {'to': 'list1*list2'},
{'a': 'list1*list2'}, {'of': 'list1*list2'}, {'and': 'list1*list2'}]
所以我的問題是,如何將這兩個列表相乘?
由於列表已經按相同的順序排序,我建議將它們zip
並應用您想要的乘法
list1 = [{'the': '0.181'}, {'to': '0.115'}, {'a': '0.093'}, {'of': '0.084'}, {'and': '0.078'}]
list2 = [{'the': '1.010'}, {'to': '1.010'}, {'a': '1.000'}, {'of': '1.102'}, {'and': '1.228'}]
result = []
for pair1, pair2 in zip(list1, list2):
k1, v1 = list(pair1.items())[0]
k2, v2 = list(pair2.items())[0]
if k1 != k2:
raise Exception(f"Malformed data ({k1},{v1}).({k2},{v2})")
result.append({k1: float(v1) * float(v2)})
print(result)
# [{'the': 0.18281}, {'to': 0.11615}, {'a': 0.093}, {'of': 0.09256800000000001}, {'and': 0.095784}]
您可以先對list1
和list2
進行排序,然后將兩個列表的項目相乘,如下所示:
list2 = sorted(list2, key=lambda x: list(x.keys())[0])
list1 = sorted(list1, key=lambda x: list(x.keys())[0])
res = []
for idx , l in enumerate(list1):
res.append({list(l.keys())[0] : float(list2[idx].get(*(l.keys()), 1)) * float(*(l.values()))})
print(res)
輸出:
[{'a': 0.093},
{'and': 0.095784},
{'of': 0.09256800000000001},
{'the': 0.18281},
{'to': 0.11615}]
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