1、负索引(Negative Indexing) 例如: 从索引5到索引1获取字符,从字符串末尾开始计数: b = "Hello, World!" print(b[-5:-2]) 相关文档: Python 字符串(String)的使用 Python 声明字符串 Python 字符串变量 Python 多行字符串 Python 字符串(Strings)是数组 Python 字符串切片(slice) Python 字符串负索引(...
Cannot apply indexing with [] to an expression of type 'method group' Cannot apply indexing with [] to an expression of type 'System.Collections.Generic.IEnumerable Cannot await 'Void' Cannot cast DBNull.Value to System.Decimal error in LINQ Cannot change startup object of a basic C# console...
Cannot apply indexing with [] to an expression of type 'method group' Cannot apply indexing with [] to an expression of type 'System.Collections.Generic.IEnumerable Cannot await 'Void' Cannot cast DBNull.Value to System.Decimal error in LINQ Cannot change startup object of a basic C# consol...