Python n choose r

# PYTHON 3.8
import math
math.comb(n, r)

Source: stackoverflow.com

Python choose function

deck = range(1, 53) #get deck of cards from 1 to 52
comb = list(itertools.combinations(deck, 2)) # make list  with unic 2 cards combination
len(comb) #output 1326

Python n choose r

# PYTHON <3.8
import operator as op
from functools import reduce

def ncr(n, r):
    r = min(r, n-r)
    numer = reduce(op.mul, range(n, n-r, -1), 1)
    denom = reduce(op.mul, range(1, r+1), 1)
    return numer // denom  # or / in Python 2

Source: stackoverflow.com

Python choose function

>>> from math import comb
>>> comb(20,10)

-1

Source: stackoverflow.com

Similar codes

0 vote284 views1 answer
Python Script to check how many images are broken
Python
1 vote287 views1 answer
Wrap list python
Python
5 votes278 views1 answer
Multinomial regression scikit learn
Python
2 votes280 views1 answer
Check the os in python
Python
0 vote285 views1 answer
Python tokenize sentence italian spacy
Python
0 vote263 views1 answer
Ignoring warnings
Python
1 vote316 views1 answer
How to print hello world 10 times in python
Python
2 votes273 views1 answer
Pandas index false print
Python
5 votes295 views2 answers
Groupby and list
Python
8 votes281 views3 answers
Save plot in python
Python