Assign random team out of 16 teams to a random person out of 8 people

Question

I am trying to assign two teams out of 16 teams to 8 people out of 8 people,

Here is what I have:

import random    
person = ['Ashton', 'Danny', 'Martin', 'Yves', 'Nick', 'Cormac', 'Thierry', 'Ciaran']    
team = ['France', 'Switzerland', 'England', 'Slovakia', 'Germany', 'Ukraine', 'Spain', 'Czech Republic', 'Croatia', 'Italy', 'Republic of Ireland', 'Sweden', 'Russia', 'Wales', 'Belgium']    
namesTeams = {}    
for x in person:    
    teamName = team[random.randint(0, len(team) -1)]    
    namesTeams[x] = teamName    
    team.remove(teamName)    
print(namesTeams)

Erich · Answer 1 · 2016-06-10T12:49:02.247

2

This can be done with random.choice([List])

Example:

import random

persons = ['Name', 'Name', 'Name', 'Name', 'Name', 'Name', 'Name', 'Name']

teams = ['France', 'Switzerland', 'England', 'Slovakia', 'Germany', 'Ukraine', 'Spain', 'Czech Republic', 'Croatia', 'Italy', 'Republic of Ireland', 'Sweeden', 'Russia', 'Wales', 'Belgium']

combinations = {p: random.choice(teams) for p in persons}

The result is a dictionary.

If you want to avoid duplicates you have to iterate over the list.

combinations = {}
for p in persons:
    team = random.choice(teams)
    combinations[p] = team
    teams.remove(team)

edited Jun 10 '16 at 12:49

answered Jun 10 '16 at 12:38

Erich

1,838
16
20

Yes, this works for python3 and python2.7 – Erich Jun 10 '16 at 12:42
1

There is a typo in your code, it's `teams`, not `team`. Moreover, this will only yield one result `{'Name': 'Ukraine'}` for instance. – Raphaël Gomès Jun 10 '16 at 12:44
Thanks, I corrected the typo. No this will create a dictionary assigning each name a random team – Erich Jun 10 '16 at 12:45
I was confused since `'Name'` is the only key in the dictionary. But you're right, provided all keys are different, this will yield the correct result. – Raphaël Gomès Jun 10 '16 at 12:48

Remi Guan · Answer 2 · 2016-06-10T13:08:05.460

So the thing you're trying to do is just pick random "the length of names" elements from teams. In this case, you should use random.sample():

>>> import random
>>> person = ['Name', 'Name', 'Name', 'Name', 'Name', 'Name', 'Name', 'Name']
>>> team = ['France', 'Switzerland', 'England', 'Slovakia', 'Germany', 'Ukraine', 'Spain', 'Czech Republic', 'Croatia', 'Italy', 'Republic of Ireland', 'Sweeden', 'Russia', 'Wales', 'Belgium']

>>> random.sample(team, len(person))
['Ukraine', 'Russia', 'England', 'Croatia', 'France', 'Spain', 'Italy', 'Wales']

From the documentation:

random.sample(population, k)

Return a k length list of unique elements chosen from the population sequence or set. Used for random sampling without replacement.

Returns a new list containing elements from the population while leaving the original population unchanged. The resulting list is in selection order so that all sub-slices will also be valid random samples. This allows raffle winners (the sample) to be partitioned into grand prize and second place winners (the subslices).

If you want to assign two teams per person, I'd suggest you random.shuffle() the team list, then split the list into 2 sized chunks, and put the result into a dictionary:

{person: two_teams for person, two_teams in 
                   zip(people, [team[i:i+2] for i in range(0, len(team), 2)])}

Raphaël Gomès · Answer 3 · 2016-06-10T12:46:14.943

0

Use random.choice(). In your case, you could have the following:

import random
names = ['Name1', 'Name2', 'Name3']
teams = ['France', 'Switzerland', 'England', 'Slovakia', 'Germany', 'Ukraine', 'Spain', 'Czech Republic', 'Croatia', 'Italy', 'Republic of Ireland', 'Sweeden', 'Russia', 'Wales', 'Belgium']
people = []

for name in names:
    people.append(random.choice(names), random.choice(teams))

people will be a list of tuples of a name and a team.

edited Jun 10 '16 at 12:46

answered Jun 10 '16 at 12:42

Raphaël Gomès

938
1
8
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1

This only creates one combination, and a combination is required for all people. – Burhan Khalid Jun 10 '16 at 12:43

Nikolaj Skov · Answer 4 · 2016-06-10T12:55:49.840

This creates a dictionary with names attached to teams, without duplicates

import random

person = ['Name1', 'Name2', 'Name3', 'Name4', 'Name5', 'Name6', 'Name7', 'Name8']
team = ['France', 'Switzerland', 'England', 'Slovakia', 'Germany', 'Ukraine', 'Spain', 'Czech Republic', 'Croatia', 'Italy', 'Republic of Ireland', 'Sweden', 'Russia', 'Wales', 'Belgium']
namesTeams = {}

for x in person:
    teamName = team[random.randint(0, len(team) - 1)]
    namesTeams[x] = teamName
    team.remove(teamName)

print(namesTeams)

Assign random team out of 16 teams to a random person out of 8 people

4 Answers4