SyntaxError when trying to print a string and a variable in an input [duplicate]

Question

My code is supposed to loop through a list of simple equations (e.g. 1+1 = 2), split the equations from the answers, and then ask the user the equation. I'm getting a SyntaxError on the line where it prints the equation, and I think it has to do with the combination of the variable and the tring since it runs fine when there is no variable inserted.

for question in questions:       #iterate through each of the questions
equation = question.split('=')   #split the equations into a question and an answer
temp = str(equation[0])
print(f'{equation[0]}=')
answer = input()  #Prompt user for answer to equation
if answer == int(equation[1]):   #Compare user answer to real answer
    score +=1                    #If answer correct, increase score

What am I missing here?

clarifications: SORRY! made a mistake and copied my test code. The important line: print(f'{equation[0]}=') has been corrected.

Indentation is identical to what is posted. equation list looks like:

1+1=2
2+2=4
44-15=29
1x2=2

full traceback:

Traceback (most recent call last):
  File "<input>", line 1, in <module>
  File "C:\Program Files\JetBrains\PyCharm Community Edition 2019.1.1\helpers\pydev\_pydev_bundle\pydev_umd.py", line 197, in runfile
    pydev_imports.execfile(filename, global_vars, local_vars)  # execute the script
  File "C:/Users/nsuess/PycharmProjects/Quiz/exercise.py", line 28
    answer = input(f'{equation[0]}=')  #Prompt user for answer to equation
                                   ^
SyntaxError: invalid syntax

Update: I found that if I change the line to: response = input(equation[0]) then it runs fine, but I need to add an '=' to the end according to the problem statement. When I use print, it puts it on a new line. Is there a workaround for this?

Is your indentation identical to what you have in your program? — Axe319
– Axe319, Commented Jul 9, 2021 at 17:11
Welcome to SO! Please take the tour. For debugging help, you need to provide a minimal reproducible example including complete working code (yours has an indentation error and is missing questions), input, expected output, and actual output, i.e. the full error message. You can edit. See How to Ask if you want more tips. — wjandrea
– wjandrea, Commented Jul 9, 2021 at 17:11
What does your error traceback say? Aside from the intention, the syntax error in the print line comes from the fstring if using Python3.5 or lower — Wondercricket
– Wondercricket, Commented Jul 9, 2021 at 17:13
@NickSuess you should edit your question to add this info instead of posting it into comments — andrepz
– andrepz, Commented Jul 9, 2021 at 17:14

itprorh66 · Accepted Answer · 2021-07-09 17:20:38Z

1

Assuming your question list is similar to the following:

questions = ['2 + 2 = 4', '3 - 1 = 2', '2 * 4 = 8']

This is how I would proceed:

score = 0
for question in questions:
    temp = question.split('=')
    equation = temp[0].strip()
    answer = temp[1].strip()
    resp = input(equation)
    if resp == answer:
        score += 1
print(score)

answered Jul 9, 2021 at 17:20

itprorh66

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2 Comments

Nick Suess Over a year ago

This runs when I put it in my code. I think it may have something to do with the .strip, because other than that it looks almost identical to me. Thanks!

Nick Suess Over a year ago

Oh I just noticed that you have: resp = input(equation) and I have response = input(f'{equation[0]}=') So your code runs because you're not mixing a variable and a string into the input... Maybe I'll try printing the variable first

Nick Suess · Accepted Answer · 2021-07-11 08:56:37Z

0

Solved: My IDE was using python 2.7 instead of 3.6 which was needed to print a string and a variable in the same line.

answered Jul 11, 2021 at 8:56

Nick Suess

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