Matplotlib issue arise when importing tensorlayer

[ghost]

I am working with conda environment. After installing tensorlayer, I tried to import it: import tensorlayer as tl, but got such an error:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/yobichi/miniconda3/envs/dl/lib/python3.5/site-packages/tensorlayer/__init__.py", line 16, in <module>
    from . import files
  File "/Users/yobichi/miniconda3/envs/dl/lib/python3.5/site-packages/tensorlayer/files.py", line 13, in <module>
    from . import visualize
  File "/Users/yobichi/miniconda3/envs/dl/lib/python3.5/site-packages/tensorlayer/visualize.py", line 6, in <module>
    import matplotlib.pyplot as plt
  File "/Users/yobichi/miniconda3/envs/dl/lib/python3.5/site-packages/matplotlib/pyplot.py", line 115, in <module>
    _backend_mod, new_figure_manager, draw_if_interactive, _show = pylab_setup()
  File "/Users/yobichi/miniconda3/envs/dl/lib/python3.5/site-packages/matplotlib/backends/__init__.py", line 32, in pylab_setup
    globals(),locals(),[backend_name],0)
  File "/Users/yobichi/miniconda3/envs/dl/lib/python3.5/site-packages/matplotlib/backends/backend_qt5agg.py", line 16, in <module>
    from .backend_qt5 import QtCore
  File "/Users/yobichi/miniconda3/envs/dl/lib/python3.5/site-packages/matplotlib/backends/backend_qt5.py", line 26, in <module>
    import matplotlib.backends.qt_editor.figureoptions as figureoptions
  File "/Users/yobichi/miniconda3/envs/dl/lib/python3.5/site-packages/matplotlib/backends/qt_editor/figureoptions.py", line 20, in <module>
    import matplotlib.backends.qt_editor.formlayout as formlayout
  File "/Users/yobichi/miniconda3/envs/dl/lib/python3.5/site-packages/matplotlib/backends/qt_editor/formlayout.py", line 56, in <module>
    from matplotlib.backends.qt_compat import QtGui, QtWidgets, QtCore
  File "/Users/yobichi/miniconda3/envs/dl/lib/python3.5/site-packages/matplotlib/backends/qt_compat.py", line 175, in <module>
    "Matplotlib qt-based backends require an external PyQt4, PyQt5,\n"
ImportError: Matplotlib qt-based backends require an external PyQt4, PyQt5,
or PySide package to be installed, but it was not found.

This issue is not supposed to arise with conda. When I import matplotlib individually, it works well. I wonder how can I deal with this issue. Thanks in advance!

[wagamamaz]

can you try

import matplotlib 
matplotlib.use('Agg')
import tensorlayer as tl

[ghost]

It solved the problem perfectly! Thanks a lot!!!