import os

sentenceEdit = open("default.txt", "w")
sentenceEdit.write("The ADJECTIVE panda walked to the NOUN and then VERB.
A nearby NOUN was unaffected by these events.")

for answerDoc in range(1,):
answerFile = open("changes%s.txt" % (answerDoc + 1), "w")
answerFile.write(default.txt)
answerFile = open("changes%s.txt" % (answerDoc + 1), "a")
answerFile = open("changes%s.txt" % (answerDoc + 1), "a")
answerFile.write(adjChange + " panda walked to the ")
answerFile.close()
nounChange = input("Enter a noun: ")
answerFile = open("changes%s.txt" % (answerDoc + 1), "a")
answerFile.write(nounChange + " and then ")
answerFile.close()
verbChange = input("Enter a verb: ")
answerFile = open("changes%s.txt" % (answerDoc + 1), "a")
answerFile.write(verbChange + ". A nearby ")
answerFile.close()
secondNounChange = input("Enter another noun: ")
answerFile = open("changes%s.txt" % (answerDoc + 1), "a")
answerFile.close()

print(answerFile%s.txt % (answerDoc + 1))