如何更新列表值，匹配另一个列表

Question

让我们说我总共有四个列表，看起来像这样

OrderNum1 = ['110','375']
originaltime = ['12AM','5AM']

OrderNum2 = ['110','215']
newtime = ['2AM', '3AM']

是否只有在ordernum1和ordernum2中的值匹配时才替换原始时间值？

在这种情况下，目标是将12AM替换为2AM，因为ordernum1和ordernum2的索引0均为'110'，因此输出看起来像

print(originaltime)
2AM, 5AM

Answer 1

您可以结合使用zip()和enumerate()：

OrderNum1 = ['110','375']
originaltime = ['12AM','5AM']

OrderNum2 = ['110','215']
newtime = ['2AM', '3AM']

for i,(a,b) in enumerate(zip(OrderNum1,OrderNum2)):
    if a == b:
        originaltime[i] = newtime[i]

Answer 2

这是您要找的吗？

OrderNum1 = ['110','375']
originaltime = ['12AM','5AM']

OrderNum2 = ['110','215']
newtime = ['2AM', '3AM']

for i in range(len(OrderNum1)):
    if OrderNum1[i] == OrderNum2[i]:
        originaltime[i] = newtime[i]

print(originaltime)

输出：

['2AM', '5AM']