python type_error ai_generated true

TypeError: render_template() missing 1 required positional argument: 'template_name_or_list'

ID: python/flask-typerror-render-template-missing-argument

Also available as: JSON · Markdown · 中文
80%Fix Rate
88%Confidence
0Evidence
2024-03-22First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.x active — — —

Root Cause

Calling render_template without any arguments; requires at least template name.

generic

中文

调用 render_template 时没有任何参数；至少需要模板名称。

Workarounds

  1. 95% success Provide template name as first argument 
    return render_template('index.html', name='Alice')
  2. 90% success Use named arguments 
    return render_template(template_name_or_list='index.html', name='Alice')

Dead Ends

Common approaches that don't work:

  1. Passing only context as positional argument 80% fail

    First argument is template name, not context.

  2. Using *args incorrectly 60% fail

    Misunderstanding function signature.