Removing text from file until certain word limit python [duplicate]

Update: Thanks guys for the help I finally figured it out. I don't know why i didnt use other libraries (brain fart moment) I'll link the working code below. The alternative answers work but dont keep the same lines as they were before.

The working code:

log_file = open("bigfile.txt", "rt")
contents = log_file.read()
words = contents.split(' ') #added space here
log_file.close() 

write_file = open("info.txt",'w') # we wipe everything in the file

# slice the file's content
words_to_add = words[-1000:] #like @jpa suggested 

for w in words_to_add: # Add the first words
    write_file.write(w + " ")


write_file.close()

source https://stackoverflow.com/questions/73673373/removing-text-from-file-until-certain-word-limit-python

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