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import textwrap
 
with open("input.txt", "r") as f:
    output = ""
    for l in f.readlines():  # text splited by lines
        output = "\n".join([output, textwrap.fill(l, width=413)]) # adding to the output the wrapped new line
with open("output.txt", "w") as o:
    o.write(output)
 

from nltk.tokenize.punkt import PunktSentenceTokenizer
import textwrap
pst = PunktSentenceTokenizer()
with open("input.txt", "r") as f:
    output = ""
    for l in f.readlines():
        chunk = ""
        sentences = pst.tokenize(l)
        for sentence in sentences:
            output = "\n".join([output, textwrap.fill(sentence, width=413)])
with open("output.txt", "w") as o:
    o.write(output)