I have one list named columns, and I have to create one nested list based on a split of the elements (the first three). For example, I will divide this element ‘101 Drive 1 A’ in ‘101 Drive 1’ and make a group. The output will look like this: Answer One approach using collections.defaultdict: Output A more robust alternative, that
How to remove all Pandas rows of lists if they contain specific values?
I am looking for a way how to drop all the rows that contain any value from a list: Int: Out: I have come up with this solution: which only works with these simplified data, but not in other cases, therefore I am looking for some alternative way. Thank you. Answer Use boolean indexing with set.isdisjoint:
Remove element in list with bool flag with List Comprehension
Wondering if there would be a neat way to use List Comprehension to accomplish removing an element from a list based on a bool. example expected output I know I could so something like: But wondering if I could use a bool flag to do this instead of a string as I only want to to run if the bool
python a faster method of finding indexes in a list of 2million+ data that match string condition
Hello, I have shared the reproducible code above. Background: Let me quickly introduce my data station_combinations is the cross product of “my_list” separated by the notation “_”. You can think of it as a destination among “my_list” items so 1_2 would be going from 1 to 2 whereas 2_1 would going from 2 to 1. So I will refer as
(python) subtract value in a list from value in the same list in a for loop / list comprehension
suppose i have in a for loop I want to subtract the value i from the value that comes right after. In the above example: 4-3, 6-4, 8-6, 13-8. (and i want to skip the first value) desired result can i do this in a for loop / list comprehension? more specifically do I want to do this in a
Delete Tuples in List
i want to delete Tuples out of a list if they have the same number… and I need Thanks a lot! Answer Try this:
List comprehension returning two variables
I’m trying to do a list comprehension on two lists returning 2 variables in result. Using for loop: However, when I try to use list comprehension to do the same execution, it throws a SyntaxError Answer You need to have the whole thing in square brackets. Like this: That’s because you are doing the action in the first bit print(f,
How to create new list of lists using for loop
I have two lists like I want to extract the required elements 1 and 3 from each list contained in values, to create a new list of lists like [[‘1234’, 50], [‘5678’, 100]]. I was able to solve the problem with a list comprehension: But how can I write the equivalent with explicit for loops? I tried: but the resulting
How can I run multiple expressions inside of a list comprehension python?
I was trying to write a complex list comprehension but I am not sure how I am supposed to do it. I have the following for loop which I am trying to turn into a list comprehension I was struggling to turn this into a list comprehension and this is what I have so far: however, I do not know
Splitting list in two new lists python [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 5 months ago. Improve this question in Python I have a list with 96 entries, some are positiv, some are negative. I now want to new lists with 96 entries each.