第 6 步：让我们施放火球术！只有当用户选择一个 或者计算机随机选择"a" 。
- 在cast_spell()中找到if语句。用这个函数调用替换第一遍： pass fireball( caster )
fireball()函数还需要知道是谁施法的，所以我们将caster精灵传递给它，以便该函数知道将火球扔到哪里！
To navigate the page using the TAB key, first press ESC to exit the code editor.
第 6 步：让我们施放火球术！只有当用户选择一个 或者计算机随机选择"a" 。
fireball()函数还需要知道是谁施法的，所以我们将caster精灵传递给它，以便该函数知道将火球扔到哪里！
To navigate the page using the TAB key, first press ESC to exit the code editor.
Your micro:bit is not set up for this program. Follow these steps to use your device with Codesters:
Your micro:bit has an old version of the Codesters binary file. Follow these steps to update the file on your micro:bit:
Warning: This will erase any existing program on your micro:bit.
Having trouble? Check out the micro:bit instructions to update your firmware.
Setting up your micro:bit
Calibrate your micro:bit by tilting it until all the LEDs are lit.
For a demonstration see the micro:bit calibration instructions.
Try the following steps to connect to your Micro:bit:
1. You may need to reload this page and try your program again.
2. Try disconnecting and reconnecting your Micro:bit. Then reload the page and run your program again.
3. If you are still having problems your Micro:bit may have an old firmware version that is incompatible with Codesters.
To update the firmware follow these Micro:bit instructions.
Are you already running a Codesters project in another tab or window?
Micro:bit can only connect to one web page at a time. Try stopping other Codesters projects or closing other tabs or windows that may be using your Micro:bit.
If that doesn't fix the problem try disconnecting your Micro:bit, reloading this page, and reconnecting your Micro:bit.
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