题目：查找字符串。
程序分析：使用find() 方法语法。
程序源代码：
以上实例输出结果为：
Python练习实例：云计算开发中的字符串查找
OpenMagic API
Need more than content? Move into the product flow.
If you are here for model access, pricing, developer docs, or the future API console, the dedicated product path now lives on api.openmagic.ai.