python2.7 一個莫名其妙的錯誤

　　先看看錯誤：

Traceback (most recent call last):
  File "/home/darkchii/文檔/PycharmProjects/ml/model.py", line 3, in <module>
    import matplotlib.pyplot as plt
  File "/home/darkchii/.local/lib/python2.7/site-packages/matplotlib/pyplot.py", line 71, in <module>
    from matplotlib.backends import pylab_setup
  File "/home/darkchii/.local/lib/python2.7/site-packages/matplotlib/backends/__init__.py", line 16, in <module>
    line for line in traceback.format_stack()
  File "/home/darkchii/.local/lib/python2.7/site-packages/matplotlib/backends/__init__.py", line 18, in <genexpr>
    if not line.startswith('  File "<frozen importlib._bootstrap'))
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe6 in position 23: ordinal not in range(128)

　　說是無法解碼18行,23列位置上的‘字節’，我也是醉了，關鍵第23列是這樣的：

　　圖中的startswith的sw的s。。。這叫我怎么改。。。