列表理解subsuite

Question

如果我有這樣的列表：

["1","2","3"] 

如何打印列表，並在同一時間一個1追加到3號？

感謝

Answer 1

試試這個：

print [x if x != "3" else "1" + "3" for x in ["1","2","3"]] 

或者這樣：

print [x if x != "3" else "3" + "1" for x in ["1","2","3"]] 

或者這樣：

print [x if x != "3" else str(1+int("3")) for x in ["1","2","3"]] 

這真的取決於你的意思是什麼「加單身1到3「。

Answer 2

也許你正在努力實現這一點：

print [str(int(i) + 1) if i == '3' else i for i in ['1', '2', '3']] 
>>> ['1', '2', '4'] 

？