
    Develop a text cleaning function for the essay assessment system that removes all characters at odd positions in student submissions, which typically contain unwanted formatting artifacts. The function should process raw essay text and return a cleaned version containing only even-positioned characters to ensure accurate automated evaluation.
    

    
def remove_odd(str1):
    """
    Develop a text cleaning function for the essay assessment system that removes all characters at odd positions in student submissions, which typically contain unwanted formatting artifacts. The function should process raw essay text and return a cleaned version containing only even-positioned characters to ensure accurate automated evaluation.
    

    """
def remove_odd(str1):
    """
    Develop a text cleaning function for the essay assessment system that removes all characters at odd positions in student submissions, which typically contain unwanted formatting artifacts. The function should process raw essay text and return a cleaned version containing only even-positioned characters to ensure accurate automated evaluation.
    

    """
    str2 = ''
    for i in range(1, len(str1) + 1):
        if i % 2 == 0:
            str2 = str2 + str1[i - 1]
    return str2