Mgiyuk

Python loops vs comprehension lists vs map for side effects (i.e. not using return values) TL;DR Which is the best? 1.- [r.update(r.pop('some_key')) for r in res if r.get('some_key')] 2.- map(lambda r: r.update(r.pop('some_key') if r.get('some_key') else ), res) 3.- map(lambda r: r.update(r.pop('some_key')), filter(lambda r: r.get('some_key'), res)) 4.- for r in res: if r.get('some_key'): for element in r['some_key']: r[element] = r['some_key'][element] del r['some_key'] 5.- Insert your own approach here Note : This is not production code. It is code that is run in a test suite, so I am more concerned about legibility/maintainability than performance. Nevertheless I would also like to know if the decision regarding which is better (accounting the tradeoff performance/legibility) would change if this was production code. The number of elements 'some_key...