languages = ["Python", "C", "C++", "C#", "Java"]
counter = 1
for item in languages:
print(counter, item)
counter += 1
for item in enumerate(languages):
print(item[0], item[1])
for num,lang in enumerate(languages):
print(num,lang)
[print(num,lang) for num,lang, in enumerate(languages)]animals = ["cat", "bird", "dog"]
#enumerate (For Index, Element)
for i, element in enumerate(animals,0):
print(i, element)
for x in enumerate(animals):
print(x, "UNPACKED =", x[0], x[1])
'''
0 cat
1 bird
2 dog
(0, 'cat') UNPACKED = 0 cat
(1, 'bird') UNPACKED = 1 bird
(2, 'dog') UNPACKED = 2 dog
''''''
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 loop where the index and value are needed for some operation
# Standard for loop to get index and value
values = ['a', 'b', 'c', 'd', 'e']
print('For loop using range(len())')
for i in range(len(values)):
print(i, values[i])
# For loop with enumerate
# Provides a cleaner syntax
print('\nFor loop using builtin enumerate():')
for i, value in enumerate(values):
print(i, value)
# Results previous for loops:
# 0, a
# 1, b
# 2, c
# 3, d
# 4, e
# For loop with enumerate returning index and value as a tuple
print('\nAlternate method of using the for loop with builtin enumerate():')
for index_value in enumerate(values):
print(index_value)
# Results for index_value for loop:
# (0, 'a')
# (1, 'b')
# (2, 'c')
# (3, 'd')
# (4, 'e')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
"""
The enumerate() function assigns an index to each item in an
iterable object that can be used to reference the item later.
What does enumerate do in Python? It makes it easier to keep
track of the content of an iterable object.