Entering two commands in PyCharm simultaneously When you are working with matplotlib the default workflow is two create first the image itself with plt.plot() and then plt.show(). Those commands are usually entered after each other. However you can also enter them simultaneously by just concatenating them with a semicolon. So you can run plt.show([1,2,3]); plt.show() and the image if you run PyCharm in the scientific mode will popup immediately.