list_data = ["aa", "bb", "cc"]
file_data = open("a.txt", "w", encoding="utf-8")
file_data.writelines("n".join(list_data))
file_data.close()
file_data = open("a.txt", "a", encoding="utf-8")
file_data.write("nddsdfgyunsgdfkuashfandsufkeuiaugydkfhnsdfawiejfowipfqwnouf3e54f684g6s1eed3fef4earf8aersdkfjsahdfkuahewf")
file_data = open("a.txt", encoding="utf-8")
data = file_data.readlines(30)
file_data.close()
print(data)
