Python - 規定內容列表元素格式的方法
列表是有序且可變的集合。在 Python 中,列表用方括號書寫。透過引用索引號訪問列表項。負索引表示從末尾開始,-1 表示最後一個項。可以透過指定開始和結束範圍來指定索引範圍。在指定範圍時,返回值將是包含指定項的新列表。
示例
# List initialization Input = [100.7689454, 17.232999, 60.98867, 300.83748789] # Using list comprehension Output = ["%.2f" % elem for elem in Input] # Printing output print(Output) # List initialization Input = [100.7689454, 17.232999, 60.98867, 300.83748789] # Using map Output = map(lambda n: "%.2f" % n, Input) # Converting to list Output = list(Output) # Print output print(Output) # List initialization Input = [100.7689454, 17.232999, 60.98867, 300.83748789] # Using forrmat Output = ['{:.2f}'.format(elem) for elem in Input] # Print output print(Output) # List initialization Input = [100.7689454, 17.232999, 60.98867, 300.83748789] # Using forrmat Output = ['{:.2f}'.format(elem) for elem in Input] # Print output print(Output)
輸出
['100.77', '17.23', '60.99', '300.84'] ['100.77', '17.23', '60.99', '300.84'] ['100.77', '17.23', '60.99', '300.84'] ['100.77', '17.23', '60.99', '300.84']
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