在不使用.replace的情况下替换打印函数中的字符

def replace_print_char(string, char):
    index = string.find('print')
    if index != -1:
        before = string[:index]
        after = string[index + len('print'):]
        string = before + char + after
    return string

# 示例用法
original_string = 'This is a print statement.'
new_string = replace_print_char(original_string, 'log')
print(new_string)