Shulou(Shulou.com)06/01 Report--

In this issue, the editor will bring you about how to install Python in Windows. The article is rich in content and analyzes and narrates it from a professional point of view. I hope you can get something after reading this article.

How to get Python

You can download Python from the official website of Python. On the download page of the official Python website, you can hover over the "Downloads" button, wait for the menu to expand, then hover over the "Windows" option, and finally click the button to download the latest version of Python.

Downloading Python on Windows

Or you can just click the "Downloads" button and select a specific version on the download page to download.

Install Python

After downloading the installation package, open it directly and you can start the installer.

When installing, it is better to choose the default installation path, the most important thing is to add Python to the search path, otherwise the Python application does not know where to find the necessary runtime environment for Python; the default installation is not checked, you need to manually check "Add Python 3.7 to Path" in the installation window, and then click continue.

Select "Add Python 3 to PATH"

Since Windows requires your approval to allow the installation of applications that are not officially released by Microsoft, you must click "Yes" when the "User Account Control" (UAC) system prompt pops up to complete the installation.

Windows UAC

At this time, you need to wait patiently, the system will automatically distribute the Python package to the appropriate location, after waiting, it means that you have successfully installed Python, you can have a good time to play with Python!

Install an IDE

Although you only need a text editor to start writing Python code, I still recommend that you use IDE (integrated development environment) for development, which will be much easier to develop. IDE integrates a text editor with some useful Python features that are very user-friendly. You can consider choosing IDLE 3 or NINJA-IDE as your IDE.

IDLE 3

Python comes with an IDE called IDLE. Although you can write Python code in any text editor, IDE usually provides features such as code highlighting and syntax detection that plain text editors like Notepad++ do not have, and even in IDE you can run Python code quickly by clicking the "Run" button.

To start IDLE, click Windows's "start" (or "Windows") button and type python to search. At this time, multiple options may be searched, just select IDLE to start.

IDLE 3 IDE

If you don't find it in the start menu, you can also type cmd (or press the keyboard win + R key at the same time) on the start menu to start the Windows command prompt, and then enter the following command to start IDLE:

C:\ Windows\ py.exe

If it still doesn't start, try reinstalling Python, and be sure to select "Add Python to PATH" in the installation wizard. For more information, please refer to the Python official documentation.

Ninja-IDE

If you already have some programming experience and you think IDLE is a little rough for you, you can also try Ninja-IDE. Ninja-IDE is an excellent Python IDE with code highlighting, and it automatically helps you detect spelling errors, missing quotation marks or parentheses, and other syntax errors. It can also display line numbers (useful when debugging), indent tags and even run your code directly by clicking the "Run" button.

Ninja-IDE

If you want to install Ninja-IDE, you can visit Ninja-IDE 's website to download the Windows installer. The steps are similar to installing Python: download the installation package, allow Windows to install unofficial Microsoft applications, and then wait for the installation to complete.

After the Ninja-IDE installation is complete, double-click Ninja-IDE under the Windows desktop or start menu to start.

Tell Python what to do.

Keyword lets Python know what you want to do. In IDLE or Ninja-IDE, open the File menu and create a new file.

In Ninja-IDE, instead of creating a new project, create a new file separately.

In the new file you created with IDLE or Ninja-IDE, enter the following code:

Print ("Hello world.")

If you are using IDLE, please click the "run" menu and select the "run Module" option to run your program.

If you are using Ninja, click the "run File" button in the left button bar.

Running code in Ninja-IDE

Any time you want to execute code, IDE will prompt you to save the file you are currently working on before continuing.

The print keyword tells Python to print out all the text you enter in parentheses and quotation marks.

But don't be happy too soon, Python's core library can only access basic keywords, functions, and so on, such as print and help.

If you want to use more keywords and functions, you need to use the import keyword to load them. All right, first create a new file in your IDLE or Ninja and name it pen.py.

Warning: do not name your new file turtle.py, because turtle.py is the file name that contains the turtle program you want to control. Using turtle.py as the file name can confuse Python because it thinks you want to introduce your own files.

Enter the code in your new file and run:

Import turtle

Turtle is a very interesting module to use. Add this code to your file:

Turtle.begin_fill () turtle.forward (100) turtle.left (90) turtle.forward (100) turtle.end_fill ()

Let's see which patterns you can draw using the turtle module.

If you want to clear the area drawn by turtle, you can use the turtle.clear () function. Do you know what turtle.color ("blue") is used for?

Let's try something a little more complicated:

Import turtle as timport time t.color ("blue") t.begin_fill () counter = 0 while counter < 4: t.forward (100) t.left (90) counter = counter+1 t.end_fill () time.sleep (2)

To give you a challenge, try modifying the code to get the results shown in the following figure:

The above is how to install Python in the Windows shared by the editor. If you happen to have similar doubts, you might as well refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.

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