pdb.py 文件源码

def help_hidden_frames(self):
        print("""\
Some frames might be marked as "hidden": by default, hidden frames are not
shown in the stack trace, and cannot be reached using ``up`` and ``down``.
You can use ``hf_unhide`` to tell pdb to ignore the hidden status (i.e., to
treat hidden frames as normal ones), and ``hf_hide`` to hide them again.
``hf_list`` prints a list of hidden frames.

Frames can marked as hidden in the following ways:

- by using the @pdb.hideframe function decorator

- by having __tracebackhide__=True in the locals or the globals of the function
  (this hides py.test internal stuff)

- by having __unittest=True in the globals of the function (this hides
  unittest internal stuff)
""", file=self.stdout)