Python 3.4.3 (v3.4.3:9b73f1c3e601, Feb 24 2015, 22:43:06) 

>>> l = [2, 44, 3, 55, 1, 7]

>>> sorted(l)
[1, 2, 3, 7, 44, 55]

>>> l
[2, 44, 3, 55, 1, 7]

>>> sorted(l, reverse=True)
[55, 44, 7, 3, 2, 1]

>>> import random
>>> random.randint(1, 6)
6
>>> random.randint(1, 6)
3

>>> generate_empty_buckets(5)
[[], [], [], [], []]

>>> generate_random_list(12)
[3, 0, 4, 1, 3, 2, 0, 2, 4, 2, 4, 1]

>>> ================================ RESTART ================================
[9, 0, 7, 9, 3]
[]
[]
[36, 37, 33, 38, 36]
[46, 43, 43, 41]
[56, 55]
[64, 65, 66, 64, 67, 63, 66, 62, 67]
[73]
[85, 83, 80]
[94]
>>> ================================ RESTART ================================
>>> 
[19, 30, 87, 78, 17, 20, 64, 45, 23, 96, 48, 60, 0, 27, 58, 51, 84, 37, 79, 8] 

[0, 8]
[19, 17]
[20, 23, 27]
[30, 37]
[45, 48]
[58, 51]
[64, 60]
[78, 79]
[87, 84]
[96]
>>> ================================ RESTART ================================
>>> 
[74, 63, 45, 66, 83, 60, 50, 39, 58, 67, 19, 12, 60, 37, 12, 72, 44, 0, 92, 29] 

[0]
[19, 12, 12]
[29]
[39, 37]
[45, 44]
[50, 58]
[63, 66, 60, 67, 60]
[74, 72]
[83]
[92]
>>> ================================ RESTART ================================
>>> 
[89, 20, 75, 8, 88, 76, 7, 1, 23, 55, 75, 47, 51, 89, 58, 69, 54, 85, 16, 85] 

[8, 7, 1]
[16]
[20, 23]
[]
[47]
[55, 51, 58, 54]
[69]
[75, 76, 75]
[89, 88, 89, 85, 85]
[]
>>> ================================ RESTART ================================
>>> 

Program modified to place in buckets by one's digit, not ten's digit.
[46, 53, 23, 52, 27, 9, 28, 70, 56, 28, 34, 6, 60, 32, 84, 39, 37, 32, 30, 12] 

[70, 60, 30]
[]
[52, 32, 32, 12]
[53, 23]
[34, 84]
[]
[46, 56, 6]
[27, 37]
[28, 28]
[9, 39]