Note that in the first list comprehension for X_non_str, the order is: expression for item in iterable if condition. and in the last list comprehension for X_str_changed, the order is: expression1 if …

Feb 2, 2013 · Everyone states the list comprehension part simply as the first answer did, [ expression for item in list if conditional ] but that's actually not what you do in this case. (I was …

Mar 18, 2013 · Don't confuse a list comprehension (filtering), with a conditional expression (which must have a value, making the else expression mandatory). – Martijn Pieters Commented Jun …

Jul 15, 2015 · if after the for in a list comprehension is for filtering the list: when the condition is false you get no element at all. if..else before the list comprehension is simply a ternary …

Apr 23, 2012 · You can put you logic in a separate function, and then have the elegance of the list comprehension along with the readability of the function: def cond(i): if i % 4 == 0: return 'four' …

Jun 27, 2014 · Suppose I have a list a = [0, 1, 2]. I know that I can use a list comprehension like so, to get a list where the values are doubled: >>> b = [x*2 for x in a] >>> b [0, 2, 4] How can I …

Aug 4, 2020 · I'm learning the ropes of python programming and I'm struggling with what might seem simple but confusing to me. I've got the list my_list and i'd like to subtract 3, only from …

I am in Python 3 and (1/2) evaluates to 0.5 for me, not sure if the issue you stated is in older version of Python, however, your answer does work – Infinity Cliff Commented Apr 4, 2017 at …

Rather than printing the results, I want to use a list comprehension to create a list of results, like ['yes', 'no', 'idle', 'idle', 'idle']. How can we represent the elif logic in a list comprehension? Up …

Sep 26, 2018 · Python list comprehension - conditional for-loop. 0. Using both if and for in list comprehension. 8 ...