如何在python中保存多个不同文件名的文件？

filename = "file1.txt"
with open(filename, "w") as file:
    file.write("This is file 1")

filename = "file2.txt"
with open(filename, "w") as file:
    file.write("This is file 2")

filenames = ["file1.txt", "file2.txt", "file3.txt"]
for filename in filenames:
    with open(filename, "w") as file:
        file.write("This is " + filename)

import time
import random

timestamp = str(int(time.time()))
filename = "file_" + timestamp + ".txt"
with open(filename, "w") as file:
    file.write("This is a file with a unique name")

random_number = str(random.randint(1, 1000))
filename = "file_" + random_number + ".txt"
with open(filename, "w") as file:
    file.write("This is another file with a unique name")