python for enumerate

43

'''
In python, you can use the enumerate function to add a counter to
your objects in a tuple or list.
'''

myAlphabet = ['a', 'b', 'c', 'd', 'e']
countedAlphabet = list(enumerate(myAlphabet)) # List turns enumerate object to list
print(countedAlphabet) # [(0, 'a'), (1, 'b'), (2, 'c'), (3, 'd'), (4, 'e')]

myList = ['cats', 'dogs', 'fish', 'birds', 'snakes']

for index, pet in enumerate(myList):
  print(index)
  print(pet)
for key, value in enumerate(["p", "y", "t", "h", "o", "n"]):
    print key, value

"""
0 p
1 y
2 t
3 h
4 o
5 n
"""
presidents = ["Washington", "Adams", "Jefferson", "Madison", "Monroe", "Adams", "Jackson"]
for num, name in enumerate(presidents, start=1):
    print("President {}: {}".format(num, name))

Comments

Submit
0 Comments