Find_digits_given_mobile_num.py

# Write a Python program to find the digits which are absent in a given mobile number.
def absent_digits(n):
    all_nums = set([0,1,2,3,4,5,6,7,8,9])
    n = set([int(i) for i in n])
    n = n.symmetric_difference(all_nums)
    n = sorted(n)
    return n
print(absent_digits([9,8,3,3,2,2,0,9,7,6,3]))