在Python中，可通过import命令导入模块以扩展功能。例如，math模块中的floor函数可去除数值的小数部分，与四舍五入的round函数不同，它直接向下取整，但结果仍保留小数形式。如floor (2.9)将返回2.0。使用时需先用import导入相应模块，语法结构为import 模块名，之后即可调用其中的函数来增强程序处理能力。

One useful feature of the Python math module is quick access to mathematical constants. You can make Python more effective as a scientific calculator by using these same functions with numerical ...

Python is convenient and flexible, yet notably slower than other languages for raw computational speed. The Python ecosystem has compensated with tools that make crunching numbers at scale in Python ...