
    In an adaptive learning system, develop a function that analyzes a student's text response to identify the first unique character that appears only once in their answer, helping assess typing patterns and potential spelling errors. The function should process the entire response and return the first non-repeated character it encounters, which will be used to adjust the difficulty of future writing exercises.
    

    
def first_non_repeating_character(str1):
    """
    In an adaptive learning system, develop a function that analyzes a student's text response to identify the first unique character that appears only once in their answer, helping assess typing patterns and potential spelling errors. The function should process the entire response and return the first non-repeated character it encounters, which will be used to adjust the difficulty of future writing exercises.
    

    """
def first_non_repeating_character(str1):
    """
    In an adaptive learning system, develop a function that analyzes a student's text response to identify the first unique character that appears only once in their answer, helping assess typing patterns and potential spelling errors. The function should process the entire response and return the first non-repeated character it encounters, which will be used to adjust the difficulty of future writing exercises.
    

    """
    char_order = []
    ctr = {}
    for c in str1:
        if c in ctr:
            ctr[c] += 1
        else:
            ctr[c] = 1
            char_order.append(c)
    for c in char_order:
        if ctr[c] == 1:
            return c
    return None