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                >[success] # 多個數據壓縮 -- zip ~~~ 1.當有多個數組,想把他們對應項合并時候,對應打印使用zip 2.zip 只會以最短長度作為組合依據 3.zip_longest 可以構建解決問題二 ~~~ >[danger] ##### zip --- 三種情況 * 情況一 ~~~ a = ['a', 'b', 'c'] b = ['1', '2', '3'] for i in zip(a,b): print(i) 打印結果: ('a', '1') ('b', '2') ('c', '3') ~~~ * 情況二 ~~~ a = ['a', 'b', 'c'] b = ['1', '2', '3'] for k,v in zip(a,b): print(k,v) 打印結果: a 1 b 2 c 3 ~~~ * 情況三 ~~~ a = ['a', 'b', 'c'] b = ['1', '2', ] for k,v in zip(a,b): print(k,v) 打印結果: a 1 b 2 ~~~ >[danger] ##### zip_longest 解決zip尷尬問題 ~~~ 1.zip_longest(a,b, fillvalue=0) 設置fillvalue 來制定返回搭配值 ~~~ ~~~ from itertools import zip_longest a = ['a', 'b', 'c'] b = ['1', '2', ] for k,v in zip_longest(a,b): print(k,v) 打印結果: a 1 b 2 c None ~~~ >[danger] ##### zip 和字典列表配合 * dict ~~~ a = ['a', 'b', 'c'] b = ['1', '2', ] print(dict(zip(a,b))) 打印結果: {'a': '1', 'b': '2'} ~~~ * list ~~~ a = ['a', 'b', 'c'] b = ['1', '2', ] print(list(zip(a,b)) 打印結果: [('a', '1'), ('b', '2')] ~~~
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