Giving "Invalid Syntax" error with a format function

Question

Here is the code:

def print_variables(vars):
    for i in range(len(vars)):
        print(f"{i + 1}:  {vars[i]}")


print_variables(["Red", "Green", "Blue", "Orange", "Yellow"])

On the 3rd line it is giving the error "Invalid Syntax" and I don't know why. I am new to python.

score 0 · Accepted Answer · answered Oct 01 '19 at 05:04

0

I am guessing you are on an older version of Python when f'strings weren't introduced. So please upgrade to python 3.6 or newer. Otherwise, do this: For python 3.x:

print("{0}:  {1}".format((i+1),(vars[i])))

For Python 2.x:

print "%s:  %s" % ((i+1),(vars[i]))

answered Oct 01 '19 at 05:04

Sayandip Dutta

15,602
4
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When I type 'python' on cmd it says that I have python 3.7.4. – Mitchell Pincham Oct 01 '19 at 07:11
Are you running the program on cmd or some other IDE? – Sayandip Dutta Oct 01 '19 at 07:13
I tried it on idle and it showed the same error. It doesn't work on CMD either – Mitchell Pincham Oct 01 '19 at 07:19
My question is, does the code give error when run on cmd? And can you check the version of python in your ide, with `import sys` `print(sys.version)` – Sayandip Dutta Oct 01 '19 at 07:20
I think the python environment in your IDE is different than your system-level python. – Sayandip Dutta Oct 01 '19 at 07:28
On cmd it says 3.7.4 -- CMD – Mitchell Pincham Oct 01 '19 at 07:28
1

But on IDLE is says 2.7.16 -- I wiill find out how to update IDLE – Mitchell Pincham Oct 01 '19 at 07:29
Then on cmd, your original code should work. If it doesn't then there is an issue. If it does, then there is version compatibility issue with your IDE. – Sayandip Dutta Oct 01 '19 at 07:31

score 0 · Answer 2 · answered Oct 01 '19 at 05:06

0

It is working fine in python 3.7.4. It was introduced from 3.6. check this f-strings giving SyntaxError? If python version you are using is below 3.6, it may be the reason that it is giving an error.

answered Oct 01 '19 at 05:06

neha deshpande

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Giving "Invalid Syntax" error with a format function

2 Answers2