Solution to syntaxerror: invalid syntax in PIP install XXX

Statement: 1. PIP install requests are taken as an example; 2. Windows system;
first of all, check whether you have run PIP in the python environment. If so, please open the start menu, enter CMD, find the command prompt and open it.
Enter PIP install requests in CMD, If “not an internal or external command, nor a runnable program or batch file” appears, the specific solutions are as follows:
1. Find the folder where Python is located, find the scripts file, and use Ctrl + C to copy the file path. Take an individual as an example: C: 2 2. Return to the desktop, right-click “my computer” and click “properties”
3. In the pop-up page, select “advanced system settings – variable environment – path – Edit – add the file path copied in step 1 and click OK
4. Restart the computer

After restarting the computer, open CMD again, and then enter the command PIP install requests. If
appears, the installation is successful and the problem is solved.