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27 gru 2008 · 16. Yes, Python have a ternary operator, here is the syntax and an example code to demonstrate the same :) #[On true] if [expression] else[On false] # if the expression evaluates to true then it will pass On true otherwise On false.
C and many other languages have a conditional (AKA ternary) operator. This allows you to make very terse choices between two values based on the truth of a condition, which makes expressions, including assignments, very concise. I miss this because I find that my code has lots of conditional assignments that take four lines in Python: var ...
6 mar 2015 · Bear in mind this advice from The Zen of Python: "Readability counts." The ternary operator is most readable when it is all on one line. x = y if z else w. When your conditions or variables push the line past 79 characters (see PEP8), readability begins to suffer. (Readability is also why dict/list comprehensions are best kept short.)
30 sie 2012 · Yes, you can do this: <condition> and myList.append('myString') If <condition> is false, then short-circuiting will kick in and the right-hand side won't be evaluated. If <condition> is true, then the right-hand side will be evaluated and the element will be appended. I'll just point out that doing the above is quite non-pythonic, and it would ...
25 gru 2012 · You can use a ternary expression in Python, but only for expressions, not for statements: >>> a = "Hello" if foo() else "Goodbye" Edit: Your revised question now shows that the three statements are identical except for the value being assigned. In that case, a chained ternary operator does work, but I still think that it's less readable:
Nesting the ternary operator in Python. Ask Question Asked 11 years ago. Modified 6 years, 7 months ago.
2 paź 2017 · In pandas no, in numpy yes. You can use numpy.where or convert boolean Series created by condition to float - True s are 1.0 and False s are 0.0: Or: Sample: 'irr':[0,100,0.04]}) cs irr. cs irr. You say "pandas no", but it seems like you show how to do it in pandas.
5 lis 2010 · 93. PEP 308 adds a ternary operator: foo = "True" if test else "False". It's been implemented since Python 2.5. answered Nov 5, 2010 at 4:52. Brian McKenna. 46.2k 6 63 60. Wow. You beat me by 12 seconds and have character for character the same answer I did.
12 lut 2011 · One of the biggest strengths of Python is its expressiveness. It's a pity Python doesn't provide a None-coalescing operator. The ternary alternative is way more verbose and the or solution is simply not the same (as it handles all "falsy" values, not just None - that's not always what you'd want and can be more error-prone). –
I use the ternary operator wherever I can, unless it makes the code extremely hard to read, but then that's usually just an indication that my code could use a little refactoring. It always puzzles me how some people think the ternary operator is a "hidden" feature or is somewhat mysterious.
