_called_with_wrong_args() — flask Function Reference

Architecture documentation for the _called_with_wrong_args() function in cli.py from the flask codebase.

Function python ApplicationCore Scaffolding called by 2

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ApplicationCore→ Scaffolding→ _called_with_wrong_args() — flask Function Reference

Dependency Diagram

graph TD
  c9d5aa34_1bf5_6777_6447_72b24ceb6b6b["_called_with_wrong_args()"]
  a96499c3_f8a9_e782_f156_1c1ee4a86c69["cli.py"]
  c9d5aa34_1bf5_6777_6447_72b24ceb6b6b -->|defined in| a96499c3_f8a9_e782_f156_1c1ee4a86c69
  61227b34_c67c_0bff_1c83_c375e071843e["find_best_app()"]
  61227b34_c67c_0bff_1c83_c375e071843e -->|calls| c9d5aa34_1bf5_6777_6447_72b24ceb6b6b
  01192b9e_44fd_d2d6_4d3d_b0fadc14cc11["find_app_by_string()"]
  01192b9e_44fd_d2d6_4d3d_b0fadc14cc11 -->|calls| c9d5aa34_1bf5_6777_6447_72b24ceb6b6b
  style c9d5aa34_1bf5_6777_6447_72b24ceb6b6b fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

src/flask/cli.py lines 94–117

def _called_with_wrong_args(f: t.Callable[..., Flask]) -> bool:
    """Check whether calling a function raised a ``TypeError`` because
    the call failed or because something in the factory raised the
    error.

    :param f: The function that was called.
    :return: ``True`` if the call failed.
    """
    tb = sys.exc_info()[2]

    try:
        while tb is not None:
            if tb.tb_frame.f_code is f.__code__:
                # In the function, it was called successfully.
                return False

            tb = tb.tb_next

        # Didn't reach the function.
        return True
    finally:
        # Delete tb to break a circular reference.
        # https://docs.python.org/2/library/sys.html#sys.exc_info
        del tb