在Python编程中，动态类型系统允许我们在运行时动态地定义和操作变量。Python提供了两个强大的内置函数eval和exec，它们允许我们在程序运行时动态地执行Python代码。这两个函数虽然功能强大，但也需要谨慎使用，以避免潜在的安全风险。本文将详细介绍eval和exec ...

Learning how to define a function in Python is one of the most important steps to mastering the language. Functions are blocks of code that perform a specific task and can be “called” from any point ...

In the last post introducing Python, I demonstrated how to make a simple app using variables and conditional statements. In order to do anything really powerful in a given programming language though, ...

I know many other languages use the eval() function to take a string argument and evaluate it as part of the source code (so you can run a function or assign a variable etc). I've seen it in PHP, ...