How to write output content to a file in Python

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Python3.6

I am able to print the content of any website but im not able to write that content to a file.
Here, i want to write the content(i.e., text in this) to a file named key.txt
Please help! This is for my project!!

What I have tried:

from urllib.request import urlopen
import re
from bs4 import BeautifulSoup

url = input("enter full url:")
pattern = re.compile("[\w]+.[\w]+")
matchobject = pattern.match(url)
if (matchobject):
    print("your website is:",url)
    html =urlopen(url).read().decode()
    soup = BeautifulSoup(html,"html.parser")
    for script in soup(["script", "style"]):
       script.extract()
       text = soup.get_text()
       print(text)
       with open("C:\\Users\\Aishwarya\\Desktop\\key.txt", "w") as text_file:
        text_file.write(text)  # i have doubt over here
      
        text_file.close()