Rename variables + remove function contract / signature
Fix typo
Fix 2nd typo

Hopefully the last one.
Fix bs4 method call + typos
Camel to Snake case + typo
correct casting method name

Using try_cast_int directly in the array is more visual than a map on a two elements list.
Merge pull request #43 from aaronwinter/patch-6

Rename variables + remove function contract / signature