Update the screen(#7) updates the screen. Fill the screen with black before you draw anything.ĭraw the screen element(#6) adds the bunny image that you loaded to the screen at x=100 and y=100. Keep looping through(#4) keeps looping over the following indented code.Ĭlear the screen(#5) clears the screen. Load images(#3) loads the image that you would use for the bunny. Initialize the game(#2) initialises PyGame and sets up the display window. Import library(#1) imports PyGame library and allows you to use functions from the library in your program. Save the file in the game folder (the one where the resources sub-folder is) and name it game.py. Run IDLE, open a new text editor window and type the following code: But what is a game without some great graphics and sound effects? The graphics and sound effects required for this game have been included in the design.Ĭreate a folder for your game on your hard disk and extract the resources folder into that folder so that your game folder has a sub-folder named Resources, with various resources grouped in the folders inside. Do note that, Run menu is only available if you have a file open in an editor window. Save your code via File\Save and run it via Run\Run Module (F5). Choose File\New Window from IDLE menu and you will get a text editor window where you can type in your Python code. The other way is to type in your code using IDLE editor, which is what we do here. On Mac, open Terminal and type Python, then drag the file that you saved in Terminal window and click Enter. On Windows, double-click this file to run it. Open a new text file, type in your Python code like print 1 1 and save it as xxx.py (xxx can be any descriptive file name). One way is to use a plain text editor like Notepad in Windows or TextEdit in Mac. There are several ways to run a Python program as a file. If you want to work on a bigger program (like a game), you should save your code to a file so that you do not have to type it repeatedly. It provides functionalities such as image handling and sound playback that you can incorporate into the game.ĭownload PyGame library for Python 2.7 version, PyGame installer appropriate for your system, from Running Python code from file PyGame is a Python library that makes writing games easy. Now that Python is working correctly, install PyGame to write a game using Python. You have just written your first Python program! Open Terminal once at Python prompt, to test if it is correctly working, type ‘print 1 1’ and hit Return. It seems that some additional code is required in the class Car.If you are using a Mac, you will already have Python installed. It shows that speed can become negative, which is impossible. Next, click the button again, and see the test debug output: Let's look at the debugger output:Ĭlick the button to skip the library classes and go into the class Car: We've placed the breakpoint at the () statement of the test_should_not_allow_negative_speed method. To do that, click in the Navigation bar, or right-click the editor background at the method test_should_not_allow_negative_speed and choose Debug from the context menu: For example, we'll put a breakpoint in the following place: Next, let's look deeper into the test code and debug one of the tests that failed. This time some tests pass successfully: Debugging tests Right-click the test_Car.py editor tab and choose Run 'Unittests in test_Car.py': If you’re interested in learning about using the `unittest` framework, you can check out their docs.ĭef test_should_not_allow_negative_speed(self): How to write unit tests is out of scope for this article. Now we know that we can run tests, let’s start writing some actual test code. A Run/Debug configuration will be created automatically: However, we can see that the test fails by default: You can run the test by clicking the Run icon in the gutter near the class definition. We are going to test whether our car is able to accelerate and brake, so let's select those checkboxes: To do this, we need to open Car.py, then right-click the name of the class, point to Go To, and then choose Test (or just press Ctrl Shift T):Ī popup appears that suggests to create a new test: Creating testsĪ quick way to create tests is to have P圜harm stub them out from the class we’d like to test. To explicitly set the required test runner in the project settings, press Ctrl Alt S to open the IDE settings and select Tools | Python Integrated Tools, and then select the target test runner from the Default test runner list.įor more details, see Testing frameworks. If no specific test runner is installed, P圜harm uses unittest. P圜harm auto-detects a test runner that is installed on your Python interpreter and uses it to run tests.
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