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list-comprehension

Loop through list elements to get cumulative sums

August 23, 2022 by Magenaut

I’m very new to python. I’m trying to create a loop so that I can get cumulative sums of the elements in a list. For example, given a list [3, 2, 1] I’m hoping to get [3 (first number), 5 (3+2), 6 (3+2+1)], [2 (second number), 3 (2+1)] and [1].

Categories Python, Q&A Tags cumulative-sum, for-loop, list-comprehension, python Leave a comment

How to set each first unique multi-index to 0 and calculate values for the others

August 22, 2022 by Magenaut

Based on the following sample data, the following data frame is built:

Categories Python, Q&A Tags list-comprehension, loops, multi-index, pandas, python Leave a comment

to compare data of above 2 lists & add unique items only to 3rd list

August 22, 2022 by Magenaut

I tried to get it this way, but it didn’t work:

Categories Python, Q&A Tags list-comprehension, python, unique Leave a comment

What’s an elegant way to extract a series of entries in a list of tuples into sublists?

August 22, 2022 by Magenaut

Say I have a series of entries in a list of tuples like this:

Categories Python, Q&A Tags list, list-comprehension, python Leave a comment

Appending element of one list to sub-list of another list

August 22, 2022 by Magenaut

Suppose I have the following lists:

Categories Python, Q&A Tags list, list-comprehension, python Leave a comment

if/else in a list comprehension

August 22, 2022 by Magenaut

How can I do the following in Python?

Categories Python, Q&A Tags list-comprehension, python Leave a comment

Accessing class variables from a list comprehension in the class definition

August 22, 2022 by Magenaut

How do you access other class variables from a list comprehension within the class definition? The following works in Python 2 but fails in Python 3:

Categories Python, Q&A Tags list-comprehension, python, python-3.x, python-internals, scope Leave a comment

What does “list comprehension” and similar mean? How does it work and how can I use it?

August 22, 2022 by Magenaut

I have the following code:

Categories Python, Q&A Tags list, list-comprehension, python Leave a comment

Python Dictionary Comprehension

August 22, 2022 by Magenaut

Is it possible to create a dictionary comprehension in Python (for the keys)?

Categories Python, Q&A Tags dictionary, list-comprehension, python Leave a comment

Create a dictionary with comprehension

August 22, 2022 by Magenaut

Can I use list comprehension syntax to create a dictionary?

Categories Python, Q&A Tags dictionary, dictionary-comprehension, list-comprehension, python Leave a comment
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