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 ...

Python was created in 1991 by programmer Guido van Rossum, who named it for the British comedy series “Monty Python’s Flying Circus.” It was built to be easy to use but also powerful enough for a ...

Python is best thought of as a dynamic but strongly typed language. Types aren’t associated with the names of things, but with the things themselves. This makes Python flexible and convenient for ...

Functions are the structured or procedural programming way of organizing the logic in your programs. Large blocks of code can be neatly segregated into manageable chunks, and space is saved by putting ...

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, ...