Error in execution step -- "TypeError:can only concatenate str (not "int") to str"

[simran-khanuja]

Hi! Thanks for the great work :)

I was running the NLVR notebook and get the following error for the first two statements. Any idea why?

TypeError                                 Traceback (most recent call last)
Cell In[15], line 1
----> 1 result, prog_state, html_str = interpreter.execute(prog,init_state,inspect=True)

File ~/visprog/engine/utils.py:38, in ProgramInterpreter.execute(self, prog, init_state, inspect)
     36 for prog_step in prog_steps:
     37     if inspect:
---> 38         step_output, step_html = self.execute_step(prog_step,inspect)
     39         html_str += str(step_html) + '<hr>'
     40     else:

File ~/visprog/engine/utils.py:24, in ProgramInterpreter.execute_step(self, prog_step, inspect)
     22 step_name = parse_step(prog_step.prog_str,partial=True)['step_name']
     23 print(step_name)
---> 24 return self.step_interpreters[step_name].execute(prog_step,inspect)

File ~/visprog/engine/step_interpreters.py:103, in EvalInterpreter.execute(self, prog_step, inspect)
    100     step_input = step_input.replace('xor','!=')
    102 step_input = step_input.format(**prog_state)
--> 103 step_output = eval(step_input)
    104 prog_step.state[output_var] = step_output
    105 if inspect:

File <string>:1

TypeError: can only concatenate str (not "int") to str

The program generated is as follows:

ANSWER0=VQA(image=LEFT,question='How many camels are in the image?')
ANSWER1=VQA(image=RIGHT,question='How many camels are in the image?')
ANSWER2=VQA(image=LEFT,question='How many people are in the image?')
ANSWER3=VQA(image=RIGHT,question='How many people are in the image?')
ANSWER4=EVAL(expr='{ANSWER0} + {ANSWER1} > {ANSWER2} + {ANSWER3}')
FINAL_ANSWER=RESULT(var=ANSWER4)

[Qu1n-22]

HI! I meet the same problem.:(
If you solve the question,pls tell me how to fix it.

[Qu1n-22]

Ok! I have fixed this problem.

I find that the problem seems to be that the number is not correctly recognized, we just need to convert him into 'str'.

        converted_tokens = []
        for token in tokens:
            if token.isdigit():  
                word = num2words(int(token))  
                converted_tokens.append(f"'{word}'") 
            else:
                converted_tokens.append(token)
        step_input = ' '.join(converted_tokens)

After that, I found that adding single quotes to numbers would achieve the same effect :)

        converted_tokens = []
        for token in tokens:
            if token.isdigit():  
                converted_tokens.append(f"'{token}'") 
            else:
                converted_tokens.append(token)
        step_input = ' '.join(converted_tokens)

Have a nice day!

[aFloatingFish]

How do you fix the issue, and where the code is?

[Jungle728]

Yes, the above modifications can make the example nlvr output normally, but it will cause errors in the example gqa. In example gqa, it would result in '1'+'1'='11 'instead of 1+1=2.