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Deciphering Text From Research Paper
from string import *
# create decipher dictionary
l = letters[:26]
decipher = "".join([l[(i+3)%26] for i in range(len(l))])
decipher = dict(zip(decipher,l))
# open and read encrypted text
filename = 'estherDuflo.txt'
f = open(filename, 'rw')
lines = f.readlines()
lines = [l[:-1] for l in lines]
# use first 1475 lines only
newlines = lines[:1475]
# apply decryption on those 1475 lines
decipheredLines = []
for line in newlines:
x = line.lower()
s = []
for letter in x:
if letter in letters:
s.append(decipher[letter])
else:
s.append(letter)
s.append('\n')
decipheredLines.append(''.join(s))
# write deciphered text to new text file
decipheredFile = 'estherDufloDeciphered.txt'
df = open(decipheredFile, 'w')
for line in decipheredLines:
df.write("%s" % line)
# close both text files
f.close()
df.close()
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