How do I activate a virtualenv inside PyCharm’s terminal?

Edit: According to https://www.jetbrains.com/pycharm/whatsnew/#v2016-3-venv-in-terminal, PyCharm 2016.3 (released Nov 2016) has virutalenv support for terminals out of the box Auto virtualenv is supported for bash, zsh, fish, and Windows cmd. You can customize your shell preference in Settings (Preferences) | Tools | Terminal | check Activate virtaulenv you also need to make sure to have the … Read more

Why is the PyGame animation is flickering

The problem is caused by multiple calls to pygame.display.update(). An update of the display at the end of the application loop is sufficient. Multiple calls to pygame.display.update() or pygame.display.flip() cause flickering. Remove all calls to pygame.display.update() from your code, but call it once at the end of the application loop: while running: screen.fill((225, 0, 0)) … Read more

Pycharm and sys.argv arguments

In PyCharm the parameters are added in the Script Parameters as you did but, they are enclosed in double quotes “” and without specifying the Interpreter flags like -s. Those flags are specified in the Interpreter options box. Script Parameters box contents: “file1.txt” “file2.txt” Interpeter flags: -s Or, visually: Then, with a simple test file … Read more

tkinter: how to use after method

You need to give a function to be called after the time delay as the second argument to after: after(delay_ms, callback=None, *args) Registers an alarm callback that is called after a given time. So what you really want to do is this: tiles_letter = [‘a’, ‘b’, ‘c’, ‘d’, ‘e’] def add_letter(): rand = random.choice(tiles_letter) tile_frame … Read more