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不知道如何在if语句中创建or和语句

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如何使 if 语句具有两个同义词，即"display"和"screen"，然后是 and 和另一个字符串，如"broken" . 我们的想法是只有在有"display"和"broken"或"screen"和"broken"时才会输出 .

我试过的：

def issuesection():
    issue = input("Type in your issue in a sentence and we will try out best to help you with a solution:  ")
    if "display" or "screen" in issue and "broken" in issue:
        print('WORKED')
    else:
        print("FAIL")
python python-3.x

1 回答

  • 1

    问题是Python看到：

    "display" or "screen" in issue

    如：

    ("display") or ("screen" in issue)

    所以它评估了 "display" 和 every non-empty string is considered to be True 的真实性 .

    所以你应该把它重写为：

    if "display" in issue or "screen" in issue and "broken" in issue:

    此外，由于您希望 and 绑定到两个 in 检查，您还应该括号作为 and 的左操作数：

    if ("display" in issue or "screen" in issue) and "broken" in issue:

    现在它说：“如果显示或屏幕出现问题，则条件成立; and 破坏也存在问题". Without the brackets it would state: "如果显示有问题，条件成立; or 屏幕和破损问题” .

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