sorted() function

Sort a given sequence

String, List, and Tuple

# String (based on ASCII translations)
S = 'python'
print(sorted(S))               # ['p', 'h', 'n', 'o', 't', 'y']

# List
L = ['q', 'w', 'r', 'e', 't', 'y']
print(sorted(L))               # ['e', 'q', 'r', 't', 'w', 'y']

# Vowels Tuple
T = ('q', 'w', 'r', 'e', 't', 'y')
print(sorted(T))               # ['e', 'q', 'r', 't', 'w', 'y']

Sort a given collection in descending order

Set, Frozen Set, and Dictionary

# Set
S = {'q', 'w', 'r', 'e', 't', 'y'}
print(sorted(S, reverse=True))         # ['y', 'w', 't', 'r', 'q', 'e']

# Frozen Set
FS = frozenset(('q', 'w', 'r', 'e', 't', 'y'))
print(sorted(FS, reverse=True))        # ['y', 'w', 't', 'r', 'q', 'e']

# Dictionary
D = {'q': 1, 'w': 2, 'e': 3, 'r': 4, 't': 5. 'y': 6}
print(sorted(D, reverse=True))         # ['y', 'w', 't', 'r', 'q', 'e']

Sort the List having a key function

# take second element for sort
def takeSecond(x):
    return x[1]

LOT = [(2, 2), (3, 4), (4, 1), (1, 3)]

# sort list with key
sortedList = sorted(LOT, key=takeSecond)
print('Sorted list:', sortedList)   # [(4, 1), (2, 2), (1, 3), (3, 4)]

Ex: Sort based on remainder

# take remainder on dividing from 7
def takeRemainder(x):
    return x % 7

L = [15, 3, 11, 7]
print "Normal sort :", sorted(L)                       # [3, 7, 11, 15]
print "Sorted with key:", sorted(L, key=takeRemainder) # [7, 15, 3, 11]

Ex: Sort based on len

L = ["cccc", "b", "dd", "aaa"]
print("Normal sort :", sorted(L))             # ['aaa', 'b', 'cccc', 'dd']
print("Sort with len :", sorted(L, key=len))  # ['b', 'dd', 'aaa', 'cccc']