python return if else one line
Basic if statement (ternary operator) info In other words, it offers one-line code to evaluate the first expression if the condition is true, otherwise it evaluates the second expression. It first evaluates the condition; if it returns True , expression1, Python's peephole optimizer now recognizes patterns such x in 1, 2 ... return True if x == 'A' else True if x == 'B' else True if x == 'C' else False., So, if the first if evaluates to True , then the conditional expression will be evaluated and the appropriate element (in this case 1 or 0 ) returned ..., Note the absence of two points in that one liner. I think that the return False is never executed due to it is into the if, not outside it. So, when you take a true in the if condition, you are executing return True , but never the second statement.,This is because Python sees it as: return ... and you specify a ternary condition operator as <expr> which has syntax: ... return True if 'e' not in word else False. , It is possible to write a standard "if" statement on a single line: ... So there's no way to parenthesise it (return None) if x is None else (pass) , or ..., An example of Python's way of doing "ternary" expressions: ... actually comes in handy when using list comprehensions, or sometimes in return statements, ... 'true' if True else 'false' 'true' >>> 'true&, You can't have a return in the else clause. It should be: def sum_double(a, b): return 2*(a+b) if (a == b) else a+b.
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 python return if else one line 相關參考資料
One line if statement in Python (ternary conditional operator ...
Basic if statement (ternary operator) info In other words, it offers one-line code to evaluate the first expression if the condition is true, otherwise it evaluates the second expression. It first ev... https://www.pythoncentral.io Can I write an if else statement in one line in Python? - Stack ...
Python's peephole optimizer now recognizes patterns such x in 1, 2 ... return True if x == 'A' else True if x == 'B' else True if x == 'C' else False. https://stackoverflow.com What does if-if-else one-line do in Python? - Stack Overflow
So, if the first if evaluates to True , then the conditional expression will be evaluated and the appropriate element (in this case 1 or 0 ) returned ... https://stackoverflow.com one line if else condition in python - Stack Overflow
Note the absence of two points in that one liner. I think that the return False is never executed due to it is into the if, not outside it. So, when you take a true in the if condition, you are execu... https://stackoverflow.com if statement to one line with return - Stack Overflow
This is because Python sees it as: return ... and you specify a ternary condition operator as <expr> which has syntax: ... return True if 'e' not in word else False. https://stackoverflow.com Is it possible to write single line return statement with if ...
It is possible to write a standard "if" statement on a single line: ... So there's no way to parenthesise it (return None) if x is None else (pass) , or ... https://stackoverflow.com How to condense ifelse into one line in Python? - Stack Overflow
An example of Python's way of doing "ternary" expressions: ... actually comes in handy when using list comprehensions, or sometimes in return statements, ... 'true' if True else... https://stackoverflow.com Python one-liner if else statement - Stack Overflow
You can't have a return in the else clause. It should be: def sum_double(a, b): return 2*(a+b) if (a == b) else a+b. https://stackoverflow.com |