Aha! Thank you very much!
In python an empty string/list/set/tuple is considered falsy, similar to False, None or 0 (read more here: https://docs.python.org/2/library/stdtypes.html#truth-value-testing)
False
None
0
So if numbers: means that if the numbers list is not empty, then...
if numbers:
numbers
if x is the same as if len(x) > 0 or if x > 0 or if x == True etc.
if x
if len(x) > 0
if x > 0
if x == True
What is this trick of using only the variable name after the if?
if
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Aha! Thank you very much!
In python an empty string/list/set/tuple is considered falsy, similar to
False,Noneor0(read more here: https://docs.python.org/2/library/stdtypes.html#truth-value-testing)So
if numbers:means that if thenumberslist is not empty, then...if xis the same asif len(x) > 0orif x > 0orif x == Trueetc.What is this trick of using only the variable name after the
if?