After upgrade from Pycharm 2017.2.3 to Pycharm 2017.1.4 Pycharm\'s Debugger suggested to build cpython (or sth associated with it):
Pycharm 2017.2.3
Pycharm 2017.1.4
p
i meet this problem, and i search for it a long time, all caused by the compatible of pyqt,So I think a good idea to solve it....
then the problem was solved happily.