How to check the usage of libraries in Python?

In Python, you can use the help() function to see how to use a library. The help() function is used to get information about an object, including libraries, modules, classes, functions, etc.

Here is an example of how to use the help() function to view the usage of a library:

# 导入库
import math

# 查看math库的用法
help(math)

Running the above code will display detailed usage instructions for the math library.

In addition to using the help() function, you can also use the dir() function to get a list of attributes for the library, and use the library’s documentation string to understand how to use it. For example:

# 导入库
import math

# 获取math库的属性列表
print(dir(math))

# 获取math库的文档字符串
print(math.__doc__)

Running the above code will display the list of attributes and docstrings of the math library.

Additionally, you can find more detailed usage and examples of the library through search engines, official documents, online tutorials, etc.