python-3.x - 使用二维嵌套字典中的 if/else 语句进行列表理解循环

Question

下面的代码片段有效，它产生了我想要的东西，但是我需要一些关于如何使用该行更加 Pythonic 的指针

if avail[employee, day, "Morning"].varValue==0 and    
    avail[employee, day, "Mid"].varValue==0 and 
    avail[employee, day, "Night"].varValue==0:

完整代码

Shift_pattern_Master = ["Morning", "Mid", "Night"]

    for employee in Employees:
        for day in Days:
            if avail[employee, day, "Morning"].varValue==0 and    
                avail[employee, day, "Mid"].varValue==0 and 
                avail[employee, day, "Night"].varValue==0:
                    print (f"{employee} on {day} is off.")
            else:
                for shift in Shift_pattern_Master:
                    if avail[employee, day, shift].varValue==1:
                        print (f"{employee} on {day} works in {shift}.") 

所以我试图if avail[employee, day, shift].varValue==0 for shift in Shift_pattern_Master:让它成为一个通用条件，它一直说for是无效的语法。

我想我错过了什么，但我不知道是什么。感谢您提前提供任何帮助。

标签： python-3.xfor-loopif-statementlist-comprehension

Answer 1

怎么样：

if all(avail[employee, day, time].varValue==0 for time in ["Morning", "Mid", "Night"]):

另一种选择是重新包装条件：

if (
    avail[employee, day, "Morning"].varValue==0
    and avail[employee, day, "Mid"].varValue==0
    and avail[employee, day, "Night"].varValue==0
):