See command-line shell. The cells `In [1]:` and `In [2]:` are copy-pasted in the shell.

Python 3.11.10 | packaged by conda-forge | (main, Oct 16 2024, 01:27:36) [GCC 13.3.0]
Type 'copyright', 'credits' or 'license' for more information
IPython 8.31.0.dev -- An enhanced Interactive Python. Type '?' for help.

In [1]: %matplotlib
   ...: import matplotlib
   ...: import matplotlib.pyplot as plt
   ...: 
   ...: plt.rcParams["figure.figsize"]=(10, 7)
   ...: plt.rcParams["figure.dpi"]=144
   ...: plt.rcParams["figure.facecolor"]="white"
   ...: 
   ...: plt.ion()
Using matplotlib backend: qtagg
Out[1]: <contextlib.ExitStack at 0x7eb903e4f0d0>

In [2]: plt.plot([1, 2, 3],[5, 4, 6])
   ...: plt.pause(10)
^C---------------------------------------------------------------------------
KeyboardInterrupt                         Traceback (most recent call last)
Cell In[2], line 2
      1 plt.plot([1, 2, 3],[5, 4, 6])
----> 2 plt.pause(10)

File ~/.../lib/python3.11/site-packages/matplotlib/pyplot.py:756, in pause(interval)
    754         canvas.draw_idle()
    755     show(block=False)
--> 756     canvas.start_event_loop(interval)
    757 else:
    758     time.sleep(interval)

File ~/.../lib/python3.11/site-packages/matplotlib/backends/backend_qt.py:451, in FigureCanvasQT.start_event_loop(self, timeout)
    448 if timeout > 0:
    449     _ = QtCore.QTimer.singleShot(int(timeout * 1000), event_loop.quit)
--> 451 with _allow_interrupt_qt(event_loop):
    452     qt_compat._exec(event_loop)

File ~/.../lib/python3.11/contextlib.py:144, in _GeneratorContextManager.__exit__(self, typ, value, traceback)
    142 if typ is None:
    143     try:
--> 144         next(self.gen)
    145     except StopIteration:
    146         return False

File ~/.../lib/python3.11/site-packages/matplotlib/backend_bases.py:1672, in _allow_interrupt(prepare_notifier, handle_sigint)
   1670 signal.signal(signal.SIGINT, old_sigint_handler)
   1671 if handler_args is not None:
-> 1672     old_sigint_handler(*handler_args)

KeyboardInterrupt: 

---------------------------------------------------------------------------
OSError                                   Traceback (most recent call last)
File ~/.../lib/python3.11/site-packages/matplotlib/backends/backend_qt.py:166, in _allow_interrupt_qt.<locals>.prepare_notifier.<locals>._may_clear_sock()
    158 @sn.activated.connect
    159 def _may_clear_sock():
    160     # Running a Python function on socket activation gives the interpreter a
   (...)
    163     # the wakeup.  (We need this in case set_wakeup_fd catches a signal other
    164     # than SIGINT and we shall continue waiting.)
    165     try:
--> 166         rsock.recv(1)
    167     except BlockingIOError:
    168         # This may occasionally fire too soon or more than once on Windows, so
    169         # be forgiving about reading an empty socket.
    170         pass

OSError: [Errno 9] Bad file descriptor