List comprehension where an if statement follows a for statement (case (2) above) is similar to the math notation to define a subset from a given set, so [x for x in iterable if m<x<n] is similar to …

I've seen a lot of confusion lately (on other SO questions and from coworkers) about how list comprehensions work. A wee bit of math education can help with why the syntax is like this, …

Feb 2, 2013 · python list list-comprehension if-statement edited Mar 28, 2023 at 3:21 Dan D. 75.1k 15 111 129

406 Here is how to convert nested for loop to nested list comprehension for your example:

Mar 18, 2013 · python if-statement list-comprehension edited Nov 29, 2017 at 20:50 Martijn Pieters 1.1m 326 4.2k 3.4k

54 Create a dictionary with list comprehension in Python I like the Python list comprehension syntax. Can it be used to create dictionaries too? For example, by iterating over pairs of keys …

Apr 23, 2012 · Multiple IF conditions in a python list comprehension [duplicate] Asked 13 years, 8 months ago Modified 4 years, 5 months ago Viewed 49k times

The important point is that the list comprehension creates a new list. The generator creates a an iterable object that will "filter" the source material on-the-fly as you consume the bits.

Mar 1, 2014 · List comprehensions aren't magic that is inherently faster than a good old loop. As for functional list processing functions: While these are written in C and probably outperform …

I find the list comprehension much clearer than filter + lambda, but use whichever you find easier. There are two things that may slow down your use of filter. The first is the function call …