
What algorithm does Python's built-in sort() method use?
In early versions of Python, the sort function implemented a modified version of quicksort. However, in 2.3 this was replaced with an adaptive mergesort algorithm, in order to provide a …
string - Python: How to sort the alphabet in a list without sorted ...
Oct 27, 2012 · This is not based on efficiency, and has to be done with only a very very basic knowledge of python (Strings, Tuples, Lists basics) so no importing functions or using …
python - Sort a list of numbers by absolute value (ignoring ...
Use: l.sort(key= abs, reverse = True) Lists can be sorted using the sort() method. And the sort method has a parameter, called key, which you can pass a function. Using this parameter, …
Sort python list by function - Stack Overflow
Aug 21, 2011 · I have a function that takes an object as an argument and gives me a number. I wish to use this number as the key to sort my list. If I were to iterate over the list I would do …
How does the key argument in python's sorted function work?
The function you pass in to key is given each of the items that are being sorted, and returns a "key" that Python can sort by. So, if you want to sort a list of strings by the reverse of the …
What algorithm does python's sorted () use? [duplicate]
Jun 8, 2012 · Timsort is a hybrid sorting algorithm, derived from merge sort and insertion sort, designed to perform well on many kinds of real-world data. It was invented by Tim Peters in …
Custom Python list sorting - Stack Overflow
@HelloGoodbye sort() doesn't have a cmp argument in Python 3. This is an old answer when the docs link was for Python 2. You can find the old docs here or read more about it here. If you're …
python - Why does "return list.sort()" return None, not the list ...
Python has two kinds of sorts: a sort method (or "member function") and a sort function. The sort method operates on the contents of the object named -- think of it as an action that the object …
python - Sort a list by multiple attributes? - Stack Overflow
Nov 20, 2010 · A key can be a function that returns a tuple: s = sorted(s, key = lambda x: (x[1], x[2])) Or you can achieve the same using itemgetter (which is faster and avoids a Python …
python - Sort a list of lists with a custom compare function - Stack ...
For anyone who is new to python or coming from a c++ background. we want to replicate to use of the call-back function here like c++. I tried this with the sorted() function. For example: if we …