本文共 445 字,大约阅读时间需要 1 分钟。
案例一:
将s1 = ‘ABC’ s2='123’转化为A1 A2 A3 … C1 C2 C3
s1 = 'ABC's2='123'print([i + j for i in 'ABC' for j in '123'])
将li = [
[1,2,3], [4,5,6], [7,8,9] ] 转化为[1,2,3,4,5,6,7,8,9]
第一种普通方法:
li = [ [1,2,3], [4,5,6], [7,8,9] ]resultli = []for item1 in li: for item2 in item1: resultli.append(item2)print(resultli)
li = [ [1,2,3], [4,5,6], [7,8,9]]print([item2 for item1 in li for item2 in item1])
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