read from one file and write to another file line by line until end of file

def read_write_file(read_file, write_file):
    data = open(read_file, 'r')
    data_to_write = open(write_file, 'a')
    for line in data:
        if '\n' in line:
            line = line[:-1]
        data_to_write.write(line + '\n')
    data.close()
    data_to_write.close()


read_write_file('some_file', 'some_new_file')