TypeError: a bytes-like object is required, not 'str' #700

(venv) Ori@gordio ~/Development/python/sk-numbers
❱bpython
bpython version 0.16 on top of Python 3.6.2 /Users/gordio/Development/python/sk-numbers/venv/bin/python3
>>> import matplotlib.pyplot as plt
>>> plt.plot([1,2,2.5,3])
[<matplotlib.lines.Line2D object at 0x10cd60320>]
>>> plt.show()
Traceback (most recent call last):
  File "<input>", line 1, in <module>
    plt.show()
  File "/Users/gordio/Development/python/sk-numbers/venv/lib/python3.6/site-pack
ages/matplotlib/pyplot.py", line 253, in show
    return _show(*args, **kw)
  File "/Users/gordio/Development/python/sk-numbers/venv/lib/python3.6/site-pack
ages/itermplot/__init__.py", line 131, in show
    figmanager.show()
  File "/Users/gordio/Development/python/sk-numbers/venv/lib/python3.6/site-pack
ages/itermplot/__init__.py", line 275, in show
    imgcat(data.getbuffer(), fn)
  File "/Users/gordio/Development/python/sk-numbers/venv/lib/python3.6/site-pack
ages/itermplot/__init__.py", line 115, in imgcat
    sys.stdout.write(buf)
  File "/Users/gordio/Development/python/sk-numbers/venv/lib/python3.6/site-pack
ages/bpython/curtsiesfrontend/coderunner.py", line 213, in write
    self.on_write(s, *args, **kwargs)
  File "/Users/gordio/Development/python/sk-numbers/venv/lib/python3.6/site-pack
ages/bpython/curtsiesfrontend/repl.py", line 1128, in send_to_stdout
    lines = output.split('\n')
TypeError: a bytes-like object is required, not 'str'