---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
[c:\Users\nhl08\code\oct-invivo-analysis\flatten.py](file:///C:/Users/nhl08/code/oct-invivo-analysis/flatten.py) in line 12
      [13](file:///c%3A/Users/nhl08/code/oct-invivo-analysis/flatten.py?line=12) import matplotlib.pyplot as plt
     [15](file:///c%3A/Users/nhl08/code/oct-invivo-analysis/flatten.py?line=14) from oct_utils import imshow, imshow2
---> [17](file:///c%3A/Users/nhl08/code/oct-invivo-analysis/flatten.py?line=16) get_ipython().run_line_magic('matplotlib', 'qt')

File [c:\Users\nhl08\miniconda3\envs\sim\lib\site-packages\IPython\core\interactiveshell.py:2414](file:///C:/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/interactiveshell.py:2414), in InteractiveShell.run_line_magic(self, magic_name, line, _stack_depth)
   [2412](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/interactiveshell.py?line=2411)     kwargs['local_ns'] = self.get_local_scope(stack_depth)
   [2413](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/interactiveshell.py?line=2412) with self.builtin_trap:
-> [2414](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/interactiveshell.py?line=2413)     result = fn(*args, **kwargs)
   [2416](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/interactiveshell.py?line=2415) # The code below prevents the output from being displayed
   [2417](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/interactiveshell.py?line=2416) # when using magics with decodator @output_can_be_silenced
   [2418](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/interactiveshell.py?line=2417) # when the last Python token in the expression is a ';'.
   [2419](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/interactiveshell.py?line=2418) if getattr(fn, magic.MAGIC_OUTPUT_CAN_BE_SILENCED, False):

File [c:\Users\nhl08\miniconda3\envs\sim\lib\site-packages\IPython\core\magics\pylab.py:99](file:///C:/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/magics/pylab.py:99), in PylabMagics.matplotlib(self, line)
     [97](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/magics/pylab.py?line=96)     print("Available matplotlib backends: %s" % backends_list)
     [98](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/magics/pylab.py?line=97) else:
---> [99](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/magics/pylab.py?line=98)     gui, backend = self.shell.enable_matplotlib(args.gui.lower() if isinstance(args.gui, str) else args.gui)
    [100](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/magics/pylab.py?line=99)     self._show_matplotlib_backend(args.gui, backend)

File [c:\Users\nhl08\miniconda3\envs\sim\lib\site-packages\IPython\core\interactiveshell.py:3600](file:///C:/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/interactiveshell.py:3600), in InteractiveShell.enable_matplotlib(self, gui)
   [3596](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/interactiveshell.py?line=3595)         print('Warning: Cannot change to a different GUI toolkit: %s.'
   [3597](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/interactiveshell.py?line=3596)                 ' Using %s instead.' % (gui, self.pylab_gui_select))
   [3598](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/interactiveshell.py?line=3597)         gui, backend = pt.find_gui_and_backend(self.pylab_gui_select)
-> [3600](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/interactiveshell.py?line=3599) pt.activate_matplotlib(backend)
   [3601](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/interactiveshell.py?line=3600) configure_inline_support(self, backend)
   [3603](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/interactiveshell.py?line=3602) # Now we must activate the gui pylab wants to use, and fix %run to take
   [3604](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/interactiveshell.py?line=3603) # plot updates into account

File [c:\Users\nhl08\miniconda3\envs\sim\lib\site-packages\IPython\core\pylabtools.py:360](file:///C:/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/pylabtools.py:360), in activate_matplotlib(backend)
    [355](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/pylabtools.py?line=354) # Due to circular imports, pyplot may be only partially initialised
    [356](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/pylabtools.py?line=355) # when this function runs.
    [357](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/pylabtools.py?line=356) # So avoid needing matplotlib attribute-lookup to access pyplot.
    [358](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/pylabtools.py?line=357) from matplotlib import pyplot as plt
--> [360](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/pylabtools.py?line=359) plt.switch_backend(backend)
    [362](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/pylabtools.py?line=361) plt.show._needmain = False
    [363](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/pylabtools.py?line=362) # We need to detect at runtime whether show() is called by the user.
    [364](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/IPython/core/pylabtools.py?line=363) # For this, we wrap it into a decorator which adds a 'called' flag.

File [c:\Users\nhl08\miniconda3\envs\sim\lib\site-packages\matplotlib\pyplot.py:271](file:///C:/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/pyplot.py:271), in switch_backend(newbackend)
    [268](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/pyplot.py?line=267) # have to escape the switch on access logic
    [269](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/pyplot.py?line=268) old_backend = dict.__getitem__(rcParams, 'backend')
--> [271](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/pyplot.py?line=270) backend_mod = importlib.import_module(
    [272](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/pyplot.py?line=271)     cbook._backend_module_name(newbackend))
    [274](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/pyplot.py?line=273) required_framework = _get_required_interactive_framework(backend_mod)
    [275](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/pyplot.py?line=274) if required_framework is not None:

File [c:\Users\nhl08\miniconda3\envs\sim\lib\importlib\__init__.py:126](file:///C:/Users/nhl08/miniconda3/envs/sim/lib/importlib/__init__.py:126), in import_module(name, package)
    [124](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/importlib/__init__.py?line=123)             break
    [125](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/importlib/__init__.py?line=124)         level += 1
--> [126](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/importlib/__init__.py?line=125) return _bootstrap._gcd_import(name[level:], package, level)

File :1050, in _gcd_import(name, package, level)

File :1027, in _find_and_load(name, import_)

File :1006, in _find_and_load_unlocked(name, import_)

File :688, in _load_unlocked(spec)

File :883, in exec_module(self, module)

File :241, in _call_with_frames_removed(f, *args, **kwds)

File [c:\Users\nhl08\miniconda3\envs\sim\lib\site-packages\matplotlib\backends\backend_qt5agg.py:7](file:///C:/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/backends/backend_qt5agg.py:7)
      [4](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/backends/backend_qt5agg.py?line=3) from .. import backends
      [6](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/backends/backend_qt5agg.py?line=5) backends._QT_FORCE_QT5_BINDING = True
----> [7](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/backends/backend_qt5agg.py?line=6) from .backend_qtagg import (    # noqa: F401, E402 # pylint: disable=W0611
      [8](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/backends/backend_qt5agg.py?line=7)     _BackendQTAgg, FigureCanvasQTAgg, FigureManagerQT, NavigationToolbar2QT,
      [9](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/backends/backend_qt5agg.py?line=8)     FigureCanvasAgg, FigureCanvasQT)
     [12](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/backends/backend_qt5agg.py?line=11) @_BackendQTAgg.export
     [13](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/backends/backend_qt5agg.py?line=12) class _BackendQT5Agg(_BackendQTAgg):
     [14](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/backends/backend_qt5agg.py?line=13)     pass

File [c:\Users\nhl08\miniconda3\envs\sim\lib\site-packages\matplotlib\backends\backend_qtagg.py:9](file:///C:/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/backends/backend_qtagg.py:9)
      [5](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/backends/backend_qtagg.py?line=4) import ctypes
      [7](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/backends/backend_qtagg.py?line=6) from matplotlib.transforms import Bbox
----> [9](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/backends/backend_qtagg.py?line=8) from .qt_compat import QT_API, _enum
     [10](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/backends/backend_qtagg.py?line=9) from .backend_agg import FigureCanvasAgg
     [11](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/backends/backend_qtagg.py?line=10) from .backend_qt import QtCore, QtGui, _BackendQT, FigureCanvasQT

File [c:\Users\nhl08\miniconda3\envs\sim\lib\site-packages\matplotlib\backends\qt_compat.py:135](file:///C:/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/backends/qt_compat.py:135)
    [133](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/backends/qt_compat.py?line=132)         break
    [134](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/backends/qt_compat.py?line=133)     else:
--> [135](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/backends/qt_compat.py?line=134)         raise ImportError(
    [136](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/backends/qt_compat.py?line=135)             "Failed to import any of the following Qt binding modules: {}"
    [137](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/backends/qt_compat.py?line=136)             .format(", ".join(_ETS.values())))
    [138](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/backends/qt_compat.py?line=137) else:  # We should not get there.
    [139](file:///c%3A/Users/nhl08/miniconda3/envs/sim/lib/site-packages/matplotlib/backends/qt_compat.py?line=138)     raise AssertionError(f"Unexpected QT_API: {QT_API}")

ImportError: Failed to import any of the following Qt binding modules: PyQt6, PySide6, PyQt5, PySide2