Python3.4.3 installation and configuration tutorial (Windows7 version)
1. Check the bitness of the operating system: Right-click the computer (My Computer) icon on the desktop and select the Properties option to view the bitness of the operating system.
2. Select the corresponding version of Python according to the number of bits of the operating system (if the computer is a 64-bit computer, either 64-bit or 32-bit Python can be used), here choose Python-3.4.3 (can be found in the official website) Download each Python version from the website).
3. Double-click Python-3.4.3 to enter the installation interface and click Next.
4. Select the installation path (optional). Here we take F:\Python3.4.3 as an example. The installation path needs to be used when configuring system variables later, so it should be remembered.
5. After selecting the path, click Next, wait for the installation to complete, and click Finish to complete the installation.
6. After the installation is complete, we must configure the environment variables of Python, otherwise the operating system cannot reference Python correctly.
The following picture shows the result of running the Python command under the CMD command before the Python-3.4.3 environment variable is configured. We found that no version of Python3 exists (the version of Python2 is the one I installed before).
7. Configure environment variables: Right-click the computer (My Computer) icon on the desktop, select the Properties option, click the left button, select Advanced System Settings, enter System Properties, then select Environment Variables, click OK, and find the Path variable and click OK.
8. Find the Python installation path F:\Python3.4.3, and then add the Python installation path; F:\Python3.4.3 (note that the path must be preceded by a semicolon) into the Path variable, and click OK. Then restart the computer to make the configured Python environment variables take effect.
9. Verify that Python3 is successfully installed: Enter the Python installation directory and change the application corresponding to Python to Python3. Then click the icon in the bottom left corner - "Run, enter the CMD command, and then enter Python3, you can check that the installed Python-3.4.3 is successful (pro-test is valid!).
