Source code for kyu_7.the_first_non_repeated_character_in_string.first_non_repeated

#  Created by Egor Kostan.
#  GitHub: https://github.com/ikostan
#  LinkedIn: https://www.linkedin.com/in/egor-kostan/


def first_non_repeated(s: str):
    """
    You need to write a function, that returns the
    first non-repeated character in the given string.

    For example for string "test" function should return 'e'.
    For string "teeter" function should return 'r'.

    If a string contains all unique characters, then return
    just the first character of the string.
    Example: for input "trend" function should return 't'

    You can assume, that the input string has always
    non-zero length.
    :param s:
    :return:
    """

    for char in s:
        if s.count(char) == 1:
            return char
    return None