Problem Description:

This happens when I import pandas as pd in jupyter notebook.

There is an ipynb file that keeps reporting this error, and other ipynb files also have import pandas as pd but they are normal.

guess:

Will import pandas be limited in number like the thread pool, because there is a core word in the error message, which is very similar to the number of CPU cores, and there are more than 20 running state in the author's jupyter notebook, each of which is in the running state. There are import pandas operations.

solve:

Manually stop a few, then restart and execute the error file, success.