Python：ifif还是new if？

在某些情况下会有所不同。请参阅以下示例：

def foo(var):    if var == 5:        var = 6    elif var == 6:        var = 8    else:        var = 10    return vardef bar(var):    if var == 5:        var = 6    if var == 6:        var = 8    if var not in (5, 6):        var = 10    return varprint foo(5)        # 6print bar(5)        # 10