Unable to import package: Issues with InputHookManager

Question

I have now spent the last hour or so trying to fix this issue but failed. I have read several related questions such as this, GitHub issues such as this but can't find how to best solve this issue.

Steps leading to the error

1. import matplotlib.pyplot as plt

Error message:

AttributeError: 'InputHookManager' object has no attribute '_stdin_file'

EDIT

1. Importing as follows throws the same error(please see details of my system and failed attempts below):

from matplotlib import pyplot as plt

2. It works at the Terminal

Failed attempts

I then opened the file that defines InputHookManager and noticed that it had something to do with ipython and pydev so I reinstalled ipython but that didn't solve the issue.

I also tried reinstalling matplotlib to no avail. The same error happens with seaborn presumably because they both need to use gtk3.

More details about the system

python 3.6
pycharm community 2019.2.1
Ubuntu 18.04.3
matplotlib 3.1.1

Answer 1

I have exactly the same problem. I am on Ubuntu 18.04 using PyCharm 2020.2. Take a look at:"UserWarning: Matplotlib is currently using agg, which is a non-GUI backend, so cannot show the figure." when plotting figure with pyplot on Pycharm

sudo apt-get install python3-tk solves the problem

20200902 update: unfortunately I see this error again. This seems to fix:

import matplotlib 
matplotlib.use('TkAgg') 
import matplotlib.pyplot as plt

plt.show() now can show plots

Answer 2

If IPython didn't work, try the following. PyCharm seems unhappy with the interactive mode in Linux.

import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt