Python - Check if a 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 = [427, 789, 345, 122, 471, 124]

print("The list is :")
print(my_list)

my_digits = [1, 4, 7, 2]
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("The list contains the required digits")
else:
   print("The list doesn't contain the required digits")

Output

The list is :
[427, 789, 345, 122, 471, 124]
The list doesn't contain the required digits

Explanation

A list is defined and is displayed on the console.
Another list of integers is defined.
A list comprehension is defined to iterate over the list of integers.
The ‘join’ method is used to join the elements.
This is assigned to a variable.
This is done on the original list as well. Let us call it ‘all_elems’.
A variable is assigned to ‘True’/
The ‘all_elems’ list is iterated over, and if the element is not present in the previous list, the variable is assigned ‘False’.
The execution is also broken.
Outside this, if the variable has a value ‘True’, relevant message is defined.