Here I would use the variable name "keyfun" instead of "cmpfun" to avoid confusion. The sort () method does accept a comparison function through the cmp= argument as well.

Use list.sort() when you want to mutate the list, sorted() when you want a new sorted object back. Use sorted() when you want to sort something that is an iterable, not a list yet. For lists, …

Jan 23, 2013 · If your list is a mixture of date and datetimes, you can normalize them all into datetime objects, and then sort; again, as a key so that the type of the items in the original list …

If you want to sort by two columns, pass a list of column labels to sort_values with the column labels ordered according to sort priority. If you use df.sort_values(['2', '0']), the result would be …

@Cemre as for the second example, sort here is a method of List object of Python, which receives a lambda function as its key parameter. You may name it as tup, or t, or whatever …

Python has a stable sort, so provided that performance isn't an issue the simplest way is to sort it by field 2 and then sort it again by field 1. That will give you the result you want, the only catch …

Nov 20, 2010 · Here's one way: You basically re-write your sort function to take a list of sort functions, each sort function compares the attributes you want to test, on each sort test, you …

Python built-ins stick to one or the other; methods on immutable types like str do chain (they can't mutate in place, so they return a new object with the mutation applied), while most methods on …

I want to group my dataframe by two columns and then sort the aggregated results within those groups. In [167]: df Out[167]: count job source 0 2 sales A 1 4 sales B...

Jul 27, 2012 · Sort a list of Class Instances Python [duplicate] Asked 15 years, 1 month ago Modified 13 years, 4 months ago Viewed 171k times