For loops, strings and printing words with even characters

[Drone4four]

I’ve got a string: "Secret agents are super good at staying hidden."

I’m trying to use a for loop to print out only the words with an even number of characters.

In my code below, I’ve assigned the string to a variable. I’ve split each word up into items in a new list by using the split function. Then I’ve counted the length of each item and assigned it to a new variable called, counted_string. Then I iterate through each item. I take each item and apply a modulus of two. If the remainder is 0 (meaning the word has an even number of characters) only then that particular item is printed. This is what I am trying to do in following code snippet I’ve written:

mystring = "Secret agents are super good at staying hidden."
mystring.split()
counted_string = len(mystring)
int(counted_string)
for i in counted_string:    
    if i %2 == 0:
        print(i)

I was expecting this output:

Secret
agents
good
at

Instead I get this traceback:

TypeError                                 Traceback (most recent call last)
<ipython-input-28-5b7261c4eed7> in <module>()
      3 counted_string = len(mystring)
      4 int(counted_string)
----> 5 for i in counted_string:
      6     if i %2 == 0:
      7         print(i)

TypeError: 'int' object is not iterable

I'm doing something wrong at line 5. The traceback is saying that my counted_string variable is not iterable (because it’s an integer?). Only strings and lists are iterable. So if I substitute counted_string in my for loop with the original mystring variable, I don’t get any output.

Can someone better explain why my code is actually doing and how I can get the desired/expected output?

For my future reference, this forum thread refers to Task #2 in Jose Portilla’s so called 04-Field-Readiness-Exam-2 in his “Narrative Journey” Udemy Python course material (on GitHub: Pierian-Data/Python-Narrative-Journey).