HOW to CODE a separate function for csv type that when given the file as an argument, imports the data from that file (reads the file in) and assigns it to an appropriate Python data structure (like a data frame, etc) and returns that data structure. THE CODE MUST FOLLOW THE BELOW FORMAT:

def function1(var1,var2,var3): """ :param var1: please describe :param var2: please describe :param var3: please describe :return: """ return def function2(var1,var2,var3): """ :param var1: :param var2: :param var3: :return: """ return if __name__ == "__main__": # Main functions to Run function1(var1=123, var2=456, var3=678)