Codesarray

ALT Slide reading 'Python design patterns are just functions'. The next slides show Python code for strategy and factory (a RULES dict, make_rule and checkout), an observer Button class with subscribe, unsubscribe and click, and the takeaway: pass a function, skip the class.

ALT Slide reading 'Python timeit.repeat, take the min, not the average'. The next slides show repeat running sum(range(1000)) five times and the output 133, 108, 193, 155, 141 ms, best 108 ms.

ALT Slide reading 'Python profiling: measure, don't guess'. The next slides show a timeit comparison of a list and a set using repeat and min, a table explaining the cProfile columns ncalls, tottime and cumtime, and the takeaway: measure first, then fix.

ALT Slide reading 'Python lazy import waits until first use'. The next slides show lazy import json, a sys.modules check that prints False, and then True after json.dumps.

ALT Slide reading 'Python @property is just a class'. The next slides show a get method that calls the wrapped function, and a Circle area that prints 12.56 and then 28.26.