Comment by Kocrachon

Can someone explain to me why python uses try/except so often? I see that promoted as a solution instead of;

if 'bar' in input['foo'].keys(): val = input['foo']['bar']

Generally, exceptions cause code to run slower and I feel like in any other language is considered bad practices.

I never understood why Python promotes EAFP vs LBYL. Both performance and accuracy wise, checking before doing is safer and faster performance.