Table of contents
1. sklearn library
Scikit-learn (sklearn for short) is a Python library for machine learning. It includes many commonly used machine learning algorithms, preprocessing techniques, model selection and evaluation tools, etc., which can facilitate data mining and data analysis.
2. Pandas library
Pandas is a powerful tool set for analyzing structured data based on Numpy;
Pandas can import data from various file formats such as CSV, JSON, SQL, Microsoft Excel.
Pandas can perform operations on various data, such as merging, reshaping, selection, as well as data cleaning and data processing features.
3 Turtle library
It is a very popular function library for drawing images in the Python language. Imagine a little turtle, starting at the origin of a coordinate system (0,0) where the horizontal axis is x and the vertical axis is y, it uses a set of function instructions Control, moves in this planar coordinate system, thereby drawing graphics on the path it crawls.
4、 Emoji
The Emoji library is very interesting, but not everyone likes the emoji package, and the Emoji package is very useful when analyzing perspective media data.
5、scrappy
Libraries commonly used by crawler tools.
6、OpenCV
OpenCV is an open source cross-platform computer vision library that can run on Linux, Windows, Android and Mac OS operating systems. Provides interfaces for languages such as Python, Ruby, and MATLAB, and implements many general-purpose algorithms in image processing and computer vision, which can be called by developers.
6. Standard library
| name | effect |
| datatime | Provides both simple and complex methods for time and date handling |
| zlib | Direct support for common packet packaging and compression formats |
| random | Generate random numbers |
| math | Provides access to the underlying C library for floating-point arithmetic |
| sys | Tool scripts often invoke command-line arguments. |
| screaming | Get the source code of the web page |
| glob | Provides a function for generating a file listing from a directory letter search |
| os | Provide functions associated with the operating system |