When it is required to filter the rows that contains only alphabets in a list of lists, the list is iterated over and the ‘isalpha’ method is used to check if an alphabet is present or not.
Example
Below is a demonstration of the same
my_list = [["python", "is", "best"], ["abc123", "good"],["abc def ghij"], ["abc2", "gpqr"]]
print("The list is :")
print(my_list)
my_result = [sub for sub in my_list if all(element.isalpha() for element in sub)]
print("The result is :")
print(my_result)Output
The list is : [['python', 'is', 'best'], ['abc123', 'good'], ['abc def ghij'], ['abc2', 'gpqr']] The result is : [['python', 'is', 'best']]
Explanation
A list of list elements is defined that contains string values.
This is displayed on the console.
The elements are iterated over and checked to see if they are alphabets.
This is done using the ‘isalpha’ method.
The results are assigned to a variable.
This variable is displayed as output on the console.