Unlike while loop, for loop in Python doesn't need a counting variable to keep count of number of iterations. Hence, to convert a for loop into equivalent while loop, this fact must be taken into consideration.
Following is a simple for loop that traverses over a range
for x in range(5): print (x)
To convert into a while loop, we initialize a counting variable to 0 before the loop begins and increment it by 1 in every iteration as long as it is less than 5
x=0 while x<5: x=x+1 print (x)