Python inconsistent error when comparing two very large numbers

The issue is with your format calls. You're using {0} twice, which means you get the first positional argument repeated twice in the output text. The integer conversion of response is never printed.

To fix the reporting (not whatever issue is causing the mismatched data), you should either use {0} and {1} once each, or leave out the numbers completely (Python will automatically use {0} for the first {} and {1} for the second, etc.