Question

我有一个带有以下输入验证例程的Flask控制器操作，有没有办法更简洁地写它？

if 'firstName' and \
    'lastName' and \
    'age' \
not in request.json:
    return flask.abort(400)

也许是这样的，虽然我不确定如何让和运算符起作用：

mandatory_fields = ['firstName', 'lastName', 'age']
if mandatory_fields not in request.json:
        return flask.abort(400)

第二个代码段是否可行？

Answer 1

您可以使用all()这样的方法：

fields = ["a", "b", "c"]
a_hash = {"a": 1, "b": 2, "c": 3, "d": 4}
if all(field in a_hash for field in fields):
    print("All good")
# prints "All good"

fields = ["a", "b", "c", "e"]
a_hash = {"a": 1, "b": 2, "c": 3, "d": 4}
if any(field not in a_hash for field in fields):
    print("All bad")
# prints "All bad"

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1 个答案: