Python – Test String in Character List and vice-versa

When it is required to test string in character list and vice-versa, a simple ‘in’ operator and ‘join’ method are used.

Below is a demonstration of the same −

Example

my_string = 'python'

print("The string is :")
print(my_string)

my_key = ['p', 'y', 't', 'h', 'o', 'n', 't', 'e', 's', 't']
print("The key is ")
print(my_key)
joined_list = ''.join(my_key)

my_result = my_string in joined_list

print("The result is :")
if(my_result == True):
   print("The string is present in the character list")
else:
   print("The string is not present in the character list")

Output

The string is :
python
The key is
['p', 'y', 't', 'h', 'o', 'n', 't', 'e', 's', 't']
The result is :
The string is present in the character list

Explanation

• A string is defined and displayed on the console.

• The value for key is defined and displayed on the console.

• The elements of the key are joined to make a string using .join() function.

• This is assigned to a variable.

• The string and the key are compared to see if string is present in the above mentioned list.

• This result is assigned to a variable.

• Based on the Boolean value in this result, the relevant message is displayed on the console.