Which of the following would separate a string input_string on the first 2 occurrences of the letter "e"?

To separate a string input_string into three parts based on the first two occurrences of the letter "e", you can use Python's string slicing and list concatenation. Here's one way to do it:

def separate_string(input_string):
    # Find the indices of the first two occurrences of 'e'
    index1 = input_string.index('e')
    index2 = input_string.find('e', index1 + 1)

    # Split the string at those indices
    part1 = input_string[:index1]
    part2 = input_string[index1 : index2] if index2 else input_string[index1:]
    part3 = input_string[index2:] if index2 else ''

    return part1, part2, part3

# Example usage:
input_string = "example string with two e's"
part1, part2, part3 = separate_string(input_string)
print(part1, part2, part3)

This code snippet will create three parts: the substring before the first 'e', the substring between the first and second 'e' (if present), and the remainder of the string after the second 'e' (or the end if only one 'e' occurs).