python type_error ai_generated true

TypeError: view function takes 1 positional argument but 2 were given

ID: python/flask-route-argument-type-error

Also available as: JSON · Markdown · 中文
80%Fix Rate
90%Confidence
0Evidence
2024-06-11First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.x active — — —

Root Cause

路由定义了 URL 变量，但视图函数参数数量不匹配。

generic

中文

路由定义了 URL 变量，但视图函数参数数量不匹配。

Workarounds

  1. 100% success 
    @app.route('/user/<int:user_id>')
def show_user(user_id):
    return f'User {user_id}'

Dead Ends

Common approaches that don't work:

  1. 85% fail

    默认参数不能解决参数数量不匹配的问题

  2. 50% fail

    虽然不报错，但会掩盖问题，导致逻辑错误