How to traverse a list in python

Traversing is an act of processing each element in a list. We can traverse (Iterate) a list following ways.

#1 Method

We can traverse a list in python using for loop

list = [ ‘a’, ‘b’, ‘c’, ‘d’ ]

for i in list:

    print( i )

Output

    a

    b

    c

    d

#2 Method

We can traverse a list in python using a while loop

list = [ 10, 20, 30, 40 ]

i = 0

n = len( list )

while ( i < n ):

    print( list[ i ] )

    i+=1

Output

    10

    20

    30

    40

#3 Method

We can traverse a list using enumerate function

list1 = [ 1, 2, 3, 4 ]

for i,j in enumerate(list1):

    print(“list1[{0}] = {1}”.format(i,j))

Output

list1[0] = 1

list1[1] = 2

list1[2] = 3

list1[3] = 4

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