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How to expand Python related instructions, I believe that many inexperienced people do not know what to do, so this paper summarizes the causes of the problem and solutions, through this article I hope you can solve this problem.

The following is a comprehensive description of the related problems of Python, which is not only an object-oriented, literal translation computer programming language, but also a powerful and perfect general-purpose language. At present, the related technology based on this language is developing rapidly, the number of users is expanding rapidly, and there are a lot of related resources.

1. Python save / extract data method uses pickle to save / extract data, this method is simple to operate, re-read data can restore the original type, very convenient. In particular, for the preservation of some large matrices, the matrix can be put into a dictionary and saved as a whole. Suitable for a variety of extended Python objects.

2. [python] Compression and decompression using zlib introduces the compression and decompression of the standard module zlib. The example is easy to understand. But it seems that the length of the string becomes longer when it is compressed.

Strange, fortunately, the effect of compressing the file is not bad. Consider saving it with the pickle above, and then compressing it. Can also compress some private files, but also protect privacy, others do not know what type of file you are, hehe.

3, python module zipfile if you still want to use general compression, zipfile should be a good choice, now the open source software 7-zip is becoming popular, there is no doubt about its versatility. In addition, the authors of this space also have a large number of articles about Python, and the author's naming of the space is called "introduction and Application of Python".

4. Python initializes multi-dimensional array code. Defining a 2-dimensional array with extended Python is not as simple as C++, and you have to write a lot of code. Here is the method to initialize a 5 × 3 two-dimensional array.

That's it: multilist = [[0 for col in range (5)] for row in range (3)]. This site is called script Home, and its Python area also has a lot of getting started materials and some examples of common modules, which you can refer to.

5. The operation function of string in python collects the operation function of string type and the operation function of string type. Although more strings are used, some functions look strange. This article has a comprehensive collection and can be checked when needed.

6. Assign and copy the two functions copy and deepcopy in the copy module in python, which makes it easy to copy objects.

Expand Python-"conquer Python: language fundamentals and typical applications" hand-in-hand teach you how to use C to expand Python on VC and VS2005. Other articles found on the Internet do not have the details of this article. If you are not familiar with VC or VS2005, it is not easy to successfully build a dll on windows, but the silly teaching in this article is very easy to use.

8. If you have successfully compiled a simple extension module from the previous article, you should try to compile a module that is a little more complex. This article is like this, including 4 functions. But directly copy the code in the past, import can not be successful, because there is a function return type written wrong, refer to the previous article should be able to find out. Refer to this article for more information.

After reading the above, have you mastered the method of how to extend the instructions of Python? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

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