>>> timeit.timeit(setup="a={i:i for i in range(1,10)}", stmt="for i in range(10):\n b=a.get(i,0)")
1.1607079999999996
>>> timeit.timeit(setup="a={i:i for i in range(1,10)}", stmt="for i in range(0,10):\n try:\n b=a[i]\n except KeyError:\n b=0")
0.8450379999999313
>>>
Should I test if something is valid or just try to do it and catch the exception?
Is there any solid documentation saying that one way is preferred?
Is one way more pythonic?
For example, should I:
if len(my_list) >= 4:
x = my_list[3]
else:
x = 'NO_ABC'
Or:
try:
x = my_list[3]...
Is there a rationale to decide which one of try or if constructs to use, when testing variable to have a value?
For example, there is a function that returns either a list or doesn't return a value. I want to check result before processing it. Which of the following would be more preferable an...
