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Python

Posted by Andrew Harris
Andrew Harris
4,235 Points

Traceback on my local Python

I just switched over from running python 2.7 to python 3.4.2, and I am running through the tutorials on here. when I run this code in workspaces it runs fine.

input_string = input("What string do you want to use? ") input_int = input("How many times should I repeat it? ")

print(input_string*int(input_int))

but, when I run it on my local computer (both sublime 2, and notepad ++ text editors) and run it in the CMD line i get this traceback error.

file "<string>", line 1, in <module> NameError: name 'whatever I input here' is not defined.

I am not sure why I am getting this traceback error, as I copy pasted my working code out of name spaces.

Andrew Harris
Andrew Harris
4,235 Points

That obviously lost formatting, what string do you want to use line 1; how many times line 2; print line 3

1 Answer

Gavin Ralston
Gavin Ralston
28,770 Points

It seems you're using the python 2.7 interpreter on your command line. Python 2.7 would require those to be raw_input calls instead of input, and will then fuss over the input after you get it.

Check by running python -V at the command line to see the version.

If you run python3 yourfile.py instead of python yourfile.py it'll probably work like you expect.

Not sure what operating system you're using, but some sort of solution will be available to you to fix it. A shebang in your python files, or using pyenv or venv, etc.

Trevor Currie
Trevor Currie
9,289 Points

Yep, check your version! Treehouse uses Python 3.4.

Caleb Kleveter
Caleb Kleveter
Treehouse Moderator 37,862 Points

Thank Gavin!