#Write a Python function count_vowels(text) that takes a string as input and returns the count of vowels (a, e, i, o, u) in the input string, ignoring case.

Sure, here is a Python function that counts the number of vowels in a given string:

def count_vowels(text):
    # Convert the text to lower case to ignore case
    text = text.lower()
    
    # Define the vowels
    vowels = 'aeiou'
    
    # Use a list comprehension to get a list of all the vowels in the text
    vowel_list = [char for char in text if char in vowels]
    
    # Return the count of vowels
    return len(vowel_list)

You can use this function like this:

print(count_vowels('Hello World'))  # Outputs: 3

This function works by first converting the input text to lower case, so that it can match vowels regardless of whether they are upper case or lower case. It then uses a list comprehension to create a list of all the characters in the text that are vowels. Finally, it returns the length of this list, which is the count of vowels in the text.