Design a Python function to determine if any repeated photos (depicted by characters in a string) exist in the photo gallery.
While vacationing, we often end up capturing many photos, some of which may be duplicates. Your task is to define a function that, given a string where each character represents an individual photo, identifies if there are any repeated photos. ### Parameters - `photos(string)`: A string where each character represents a unique photo. The length of the string is unlimited, and the characters can be a blend of upper and lower case alphabets. ### Return Value - The function returns `True` if all photos are unique; - The function returns `False` if any duplicate photo is found. ### Examples ```python # The photo 'o' is captured twice check_duplicate_photos('moOse') # False # All photos in this example are unique check_duplicate_photos('Dermatoglyphics') # True # No photo was captured check_duplicate_photos(' ') # True ```