list-comprehension

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Making a list comprehension, beginner

I\'m new to Python and am trying to understand list comprehensions so I can use it in my code. pricelist = {\"jacket\":15, \"pants\":10, \"cap\":5, \"baseball\":3, \"gum\":1}[详细]

2023-02-07 02:10 分类：问答
Python list comprehension [duplicate]

This question already has answers here: 开发者_运维技巧 Closed 12 years ago. Possible Duplicate: List comprehension for running total[详细]

2023-02-06 13:19 分类：问答
How can I simplify "for x in a for y in b for z in c ..." with the unordered?

#!/usr/bin/python # # Description: I try to simplify the implementation of the thing below. # Sets, such as (a,b,c), with irrelavant order are given. The goal is to[详细]

2023-02-03 07:25 分类：问答
list comprehension selected indexes

Let\'s say I have a file like this (pretend it were a matri开发者_如何学Gox): abcde fghik lmnop I want to put this in a 2d list but with only columns up to index 3:[详细]

2023-02-02 21:37 分类：问答
Restricted Assignment in Python's List Comprehensions?

The example is stolen from here but my goal has a restriction so that output is [8,12,-54]. How can you do it with list comprehensions? I need to somehow refer to the index like x_{i}*y_{i}, I am hesi[详细]

2023-02-02 16:09 分类：问答
Haskell Lazy Evaluation and Reuse

I know that if I were to compute a list of squares in Haskell, I could do this: squares开发者_运维问答 = [ x ** 2 | x <- [1 ..] ][详细]

2023-02-01 18:48 分类：问答
Naming variables within nested list comprehensions in Python?

Like the title says, is there any way to name variables (i.e., lists) used within a nested list comprehension in Python?[详细]

2023-01-30 19:13 分类：问答
simple python list comprehension question

i am trying to select the elements of a list without the very first element. the following code works but it kinda look ugly to me[详细]

2023-01-30 18:35 分类：问答
if else in a list comprehension [duplicate]

This question already has answers here: if/else in a list comprehension 开发者_StackOverflow(12 answers)[详细]

2023-01-30 09:45 分类：问答
Comparing Value of one list inside Gigantic Two Dimen list in python, Fastest way?

I want to compare if value of one list exist in value of other list.They are huge (50k + items, from database).[详细]

2023-01-28 10:49 分类：问答