# Write a Python program to Check if a given string is binary string or not # Python program to check# if a string is binary or not# function for checking the# string is accepted or notdef check(string) :    # set function convert string    # into set of characters .    p = set(string)    # declare set of '0', '1' .    s = {'0', '1'}    # check set p is same as set s    # or set p contains only '0'    # or set p contains only '1'    # or not, if any one condition    # is true then string is accepted    # otherwise not .    if s == p or p == {'0'} or p == {'1'}:        print("Yes")    else :        print("No")         # driver codeif __name__ == "__main__" :    string = "101010000111"    # function calling    check(string)