Trouble when entering the number

[snippsat]

Did you see the link i posted.
Here Configuring Available Python Interpreters or just for local(if want to switch 2 to 3) Configuring Local Python Interpreters.

So let say you have install python 36 to C:\Python36
Then you go into Configuring Available Python Interpreters and point it to C:\Python36\python.exe
Then it will use this version for all  Project.

The this code shall not give you NameError when enter a string.
If get NameError you still using Python 2.x.

first_name = input("First name: ")
print(first_name)