Which of the following is a correct use of render_template() in a Flask route?

Question

BlackTom AI · Accepted Answer

We start by identifying what the question asks: the correct usage of render_template() inside a Flask route.
Option 1: 'return template("home.html")' is not valid Flask syntax for rendering templates. There is a function named render_template, not template, and you typically return its result from the view function. So this option misuses the function name and would raise a NameError or AttributeError.
Option 2: 'render_template("home.html")' calls the function but does not return the rendered string to the client. In a Flask view, you must return the response object or string, so omitting 'return' means the function returns None, which is not correct behavior for handling a request.
Option 3: 'return render_template("home.html")' correctly calls Flask's render_template to render the template and returns the resulting Response to the client. This matches the conventional pattern in a route handler: render_template(template_name, ...) and return that value.
Option 4: 'show("home.html")' is not a recognized Flask function for rendering templates. There is no built-in show() function in Flask for template rendering, so this option would fail due to an undefined function or incorrect usage.
In summary, the correct approach in a Flask route is to call render_template with the template name and return its result, while avoiding using an incorrect function name, omitting return, or invoking non-existent helpers.

Which of the following is a correct use of render_template() in a Flask route?单项选择题

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