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Using beautifulsoup, I have been trying to save all the content of a HTML to a .txt file. However, when I try using the couple ideas that I found online, I keep loosing some data and also the output is comming differently.

The file that I wanna save contains only text (music related content, which make things a little bit more complicated). This is the link of what I wanna save:
http://kern.humdrum.org/cgi-bin/ksdata?l=users/craig/classical/beethoven/piano/sonata&file=sonata01-1.krn&f=kern

Note that I already loose this lines on the step:

soup2 = bs4.BeautifulSoup(res2.text,"html.parser")

My code:

import bs4 , requests

res = requests.get("http://kern.ccarh.org/cgi-bin/ksdata?location=users/craig/classical/beethoven/piano/sonata&file=sonata01-1.krn&format=info")
soup = bs4.BeautifulSoup(res.text,"html.parser")

for link in soup.select('[href]'):
 if (".krn" in link.getText()):
 print(link.getText(),"-", link['href'])

 res2 = requests.get(link['href'])
 soup2 = bs4.BeautifulSoup(res2.text,"html.parser")

 #Idea 1
 with open('url.txt', 'w', encoding='utf-8') as f_out:
 f_out.write(soup2.prettify())

 #Idea 2
 text_file = open("Output.txt", "w")
 text_file.write(soup2.getText())
 text_file.close()

A problem of my "Idea 1" (for "Idea 2" I don't have this issue):

One example of the data that I am loosing (in both "Idea 1" and "Idea 2"):

For this file, I am loosing 3 big blocks of data; these blocks are in the middle of the file, and in the 2nd half of the original content;