list保留小數位數

將下面的list保留4位小數輸出 a = [0.00256,0.00265,0.00254,0.00258] 1，輸出之後是浮點數 a = [0.00256,0.00265,0.00254,0.00258] b = [round(i,4) for i in a] >>> b 0.0026 0.0027 0.0025 0.0026 值得注意的是round函數有時候結果並不像我們想的那樣，比如下面的

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