Python - Check if list contain particular digits

When it is required to check if a list contains particular digits, the ‘join’ method, and a simple iteration are used.

Example

Below is a demonstration of the same

my_list = [415, 133, 145, 451, 154] print("The list is :") print(my_list) my_digits = [1, 4, 5, 3] digit_string = ''.join([str(ele) for ele in my_digits]) all_elems = ''.join([str(ele) for ele in my_list]) my_result = True for element in all_elems: for ele in element: if ele not in digit_string: my_result = False break if(my_result == True): print("All elements have been made from required digits") else: print("All elements haven't been made from required digits")

Output

The list is : [415, 133, 145, 451, 154] All elements have been made from required digits

Explanation

• A list is defined and is displayed on the console.

• Another list with integers is defined.

• The list comprehension is used to iteated through the second list, and join them.

• This is assigned to a variable.

• Another list comprehension is used to iterate over the first list and join them.

• This is assigned to another variable.

• Another result variable is initially assigned to ‘True’.

• The second variable is iterated over, and if it is not found in the first variable, the result variable is assigned to ‘False’.

• If result is still ‘True’ after coming out of the condition, relevant message is displayed on the console.