You're using f-string, which is added in 3.6. The version of python3 used 
in codejam is 3.5. Check 
https://codingcompetitions.withgoogle.com/codejam/faq#platform for more 
details. I would recommend

print("Case #{}: ".format(case), *result[case])



On Monday, April 6, 2020 at 5:54:19 PM UTC-7, Nirmal Purohit wrote:
>
> I have following Python3 code which works perfectly with my windows 
> machine but give run time error on the code Jam:
> import numpy as np
> from collections import OrderedDict
>
> result = OrderedDict()
>
> for case in range(int(input())):
>     numRows = numCols = 0
>     mat = np.array([input().split() for _ in range(int(input()))], 
> dtype=int)
>     matTrace = np.trace(mat)
>     for row in range(mat.shape[0]):
>         if len(set(mat[row][:])) != mat.shape[0]:
>             numRows += 1
>         if len(set(mat[:,row])) != mat.shape[0]:
>             numCols += 1
>     result[case + 1] = [matTrace, numRows, numCols]
>
> for case in result:
>     print(f"Case #{case}: ", *result[case])
>
>
> Please can anyone provide the reason?
>

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