目录什么是三引号？三引号的基本用法用法1：多行字符串用法2：字符串包含引号三引号的进阶用法用法3：文档字符串（Docstrings）用法4：在代码中插入长文本用法5：嵌入格式化文本什么是三引号？
i am creating a sample movie (MVC) application. I was getting fine with Viewing and Creating a new record, but when i wrote the code to get the details of a particular record i met with the following
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