PYTHON

enumerate in python

languages = ['Python', 'C', 'C++', 'C#', 'Java']

#Bad way
i = 0 #counter variable
for language in languages:
    print(i, language)
    i+=1

#Good Way
for i, language in enumerate(languages):
    print(i, language)

Python enumerate() function

fruits = ['Banana', 'Apple', 'Lime']
list(enumerate(fruits))

# Output
# [(0, 'Banana'), (1, 'Apple'), (2, 'Lime')]

enumerate python

for index,subj in enumerate(subjects):
    print(index,subj) ## enumerate will fetch the index
    
0 Statistics
1 Artificial intelligence
2 Biology
3 Commerce
4 Science
5 Maths

how to use enumerate in python

rhymes=['check','make','rake']
for rhyme in enumerate(rhymes):
    print(rhyme)
#prints out :
(0, 'check')
(1, 'make')
(2, 'rake')
#basically just prints out list elements with their index

enumerate python

for index,char in enumerate("abcdef"):
  print("{}-->{}".format(index,char))
  
0-->a
1-->b
2-->c
3-->d
4-->e
5-->f

enumerate python

#Enumerate in python
l1 = ['alu','noodles','vada-pav','bhindi']
for index, item in enumerate(l1):
    if index %2 == 0:
        print(f'jarvin get {item}')

enumerate in python

# Python program to illustrate
# enumerate function in loops
l1 = ["eat", "sleep", "repeat"]
  
# printing the tuples in object directly
for ele in enumerate(l1):
    print (ele)
>>>(0, 'eat')
>>>(1, 'sleep')
>>>(2, 'repeat')    
  
# changing index and printing separately
for count, ele in enumerate(l1, 100):
    print (count, ele)
>>>100 eat
>>>101 sleep
>>>102 repeat  

# getting desired output from tuple
for count, ele in enumerate(l1):
    print(count)
    print(ele)
>>>0
>>>eat
>>>1
>>>sleep
>>>2
>>>repeat    

enumerate python

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)]

enumerate python

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
'''

for enumerate python

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
"""

enumerate in python

list1 = ['1', '2', '3', '4']

for index, listElement in enumerate(list1): 
    #What enumerate does is, it gives you the index as well as the element in an iterable
    print(f'{listElement} is at index {index}') # This print statement is just for example output

# This code will give output : 
"""
1 is at index 0
2 is at index 1
3 is at index 2
4 is at index 3
"""

enumerate python

list_of_values = ['a', 'b', 'c']

for index, value in enumerate(list_of_values):
  print(f"Index: {index}. Value: {value}"

python enumerate

'''
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)

enumerate python

languages = ['Python', 'Java', 'JavaScript']

enumerate_prime = enumerate(languages)

# convert enumerate object to list
print(list(enumerate_prime))

# Output: [(0, 'Python'), (1, 'Java'), (2, 'JavaScript')]

enumerate

array = ["one","two","three","four"]
arrayOfNumbers = []
mainArray = []

for i, x in enumerate(array):
	arrayOfNumbers.append(i)
    mainArray.append(x)
    
'''
>>print(arrayOfNumbers)
>>[0, 1, 2, 3]


>>print(mainArray)
>>["one","two","three","four"]

'''

python for enumerate

# 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('
For 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('
Alternate 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')

python enumerate

values = ["a", "b", "c", "d", "e", "f", "g", "h"]

for count, value in enumerate(values): 
      print(count,value)


#the example below produces no error
for count, value in enumerate(values):
       values.remove(values[count+1])
       print(count, value)

enumerate()

>>> users = ["Test User", "Real User 1", "Real User 2"]
>>> for index, user in enumerate(users):
...     if index == 0:
...         print("Extra verbose output for:", user)
...     print(user)

enumerate in python

mydict = {1: 'a', 2: 'b'}
for i, (k, v) in enumerate(mydict.items()):
    print(i,k,v)
    
#will print   
# 0 1 a
# 1 2 b

what does enumerate do in python

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.

Python enumerate Using enumerate()

for count, name in enumerate(names):
     print(count, name)

enumerate python

rozhix_shopping_list = ["wine", "Potato Chips", "sausages", "olive"]
for i, j in enumerate(rozhix_shopping_list):
    print(i, j)

#output
#0 wine
#1 Potato Chips
#2 sausages
#3 olive

what is enumerate in python

df.iloc[:, np.r_[1:10, 15, 17, 50:100]]