import random

office = [[] for x in range(3)]

names = ['A','B','C','D','E','F','G','H','i','j','k']

for name in names:
    randomClass = random.randint(0,2)
    office[randomClass].append(name)

i = 1

for tempName in office:
    print("属于办公室%d的人数有%d个"%(i,len(tempName)))
    i+=1
    for realName in tempName:
        # print(realName)
        print("%s" % realName, end='')
    print('\n')
    print('*'*20)

属于办公室1的人数有3个
ABG

********************
属于办公室2的人数有4个
CDik

********************
属于办公室3的人数有4个
EFHj

********************