TFV2: Problem in logistic_regression.ipynb, last cell call matplotlib, stuck

[lixiang123321]

In logistic_regression.ipynb(TFv2), last cell call, always running but no plot showing.

Anyone help? Thanks!

My environment is : MacOS, 10.13.1; tensorflow,2.0.0; python, 3.7.5; jupyter, 1.0.0; pycharm 2018.2;