Path 1: 1 calls (1.0)

→ obj {'name': 'Flask'} (1)

→ fp StringIO (1)

→ kwargs {} (1)

2 run 2 not run

1def dump(obj: t.Any, fp: t.IO[str], **kwargs: t.Any) -> None:
2    """Serialize data as JSON and write to a file.
3
4    If :data:`~flask.current_app` is available, it will use its
5    :meth:`app.json.dump() <flask.json.provider.JSONProvider.dump>`
6    method, otherwise it will use :func:`json.dump`.
7
8    :param obj: The data to serialize.
9    :param fp: A file opened for writing text. Should use the UTF-8
10        encoding to be valid JSON.
11    :param kwargs: Arguments passed to the ``dump`` implementation.
12
13    .. versionchanged:: 2.3
14        The ``app`` parameter was removed.
15
16    .. versionchanged:: 2.2
17        Calls ``current_app.json.dump``, allowing an app to override
18        the behavior.
19
20    .. versionchanged:: 2.0
21        Writing to a binary file, and the ``encoding`` argument, will be
22        removed in Flask 2.1.
23    """
24    if current_app:
25        current_app.json.dump(obj, fp, **kwargs)
26    else:
27        kwargs.setdefault("default", _default)
28        _json.dump(obj, fp, **kwargs)