The longtime contributor explains how a fly rod and a fascination with the natural world launched his journalism career and ...

1. 上下文管理器 上下文管理器用于管理资源，例如文件或数据库连接，确保在使用后进行适当清理。它们是使用 with 语句实现的。 with open("file.txt", "w") as file:file.write("Hello, World!