basic_python_list4.py

## Checking the index of '1'
l3.index(1)

#[Output]:
#1

## Here we start searching beyond the index in which '1' lies so it throws ValueError
l3.index(1,2)

#[Output]:
#---------------------------------------------------------------------------
#ValueError                                Traceback (most recent call last)
# in ()
#      1 ## Here we start searching beyond the index in which '1' lies so it throws ValueError
#----> 2 l3.index(1,2)
#ValueError: 1 is not in list

## count() method.
l4 = [1,2,3,2,3,4,5,6]
l4.count(3)

#[Output]:
2