Programmer Think

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1, Advanced file processing interface shutil Is a high-level file operation toolIt is similar to advanced API, and its main strength lies in its better support for copying and deleting files. usage method Copyfile (src, dst) is copied from source src to dst. Of course, the premise is that the target address has writable permission. The exce ...

What is an os module The os module provides the function interface functions of most operating systems. When the os module is imported, it will adapt to different operating system platforms and perform corresponding operations according to different platforms. When programming in python, it often deals with files and directories. At this time, ...

Chapter VI functions 4.1 function definition and call 4.1.1 why to use function 1. Improve code reusability -- abstract and encapsulate as function 2. Decompose complex big problems into a series of small problems, divide and rule -- the idea of modular design 3. Facilitate code maintenance and m ...

This question is already answered here: How do I make a flat list from a list? 45 answers Is there an easy way to understand lists to flatten lists of iterative objects, otherwise, if you don't think it's the best way to flatten such shallows, balance performance and readability? I tried to flatten such lists by understanding ...

Preface Looking at the learning video these days, I see a very interesting thing Jupyter Notebook, but the video is installed locally.So I thought that if the server I bought was idle, I would take it out to install one so that it could be used in the cloud. 0. Installation Page I use pyenv's virtual environment directly to install here, and I ...

Pandas Data Analysis - Chapter 3 (Index) The index object of pandas manages week labels and other metadata, and any array or other sequence labels used to build Series or DataFrame poems are converted to an index. For example In [84]: obj = pd.Series(range(3),index=list('abc')) ...