
    Create a function that processes student writing submissions by removing every second character from their text, as part of an exercise to test understanding of string manipulation. The function should take a student's text submission as input and return a new string containing only the characters at even-numbered positions (0-based indexing). This pattern recognition exercise helps students understand basic string operations and indexing concepts.
    

    
def odd_values_string(str):
    """
    Create a function that processes student writing submissions by removing every second character from their text, as part of an exercise to test understanding of string manipulation. The function should take a student's text submission as input and return a new string containing only the characters at even-numbered positions (0-based indexing). This pattern recognition exercise helps students understand basic string operations and indexing concepts.
    

    """
def odd_values_string(str):
    """
    Create a function that processes student writing submissions by removing every second character from their text, as part of an exercise to test understanding of string manipulation. The function should take a student's text submission as input and return a new string containing only the characters at even-numbered positions (0-based indexing). This pattern recognition exercise helps students understand basic string operations and indexing concepts.
    

    """
    result = ''
    for i in range(len(str)):
        if i % 2 == 0:
            result = result + str[i]
    return result