def test_score_digrams(self):
self.assertEqual(
etao.score_text('the the',
freq={
'th': 0.5, 'he': 0.5
}),
1.0
)
def test_score_identical(self):
self.assertEqual(
etao.score_text('ABCD',
freq={
'a': 0.25,
'b': 0.25,
'c': 0.25,
'd': 0.25
}), 1.0)
def test_score_identical(self):
self.assertEqual(
etao.score_text('ABCD',
freq={
'a': 0.25, 'b': 0.25,
'c': 0.25, 'd': 0.25
}),
1.0
)
def main():
parser = argparse.ArgumentParser(description="Caesar cipher solver")
parser.add_argument('ciphertext', type=str, help='text to decipher')
args = parser.parse_args()
# Get every Caesar shift of the ciphertext
shifts = [etao.caesar_shift(args.ciphertext, n) for n in range(26)]
# Score each shift according to English character frequency.
# Get tuples that pair the score with the text.
scored_shifts = [(etao.score_text(shift), shift) for shift in shifts]
# Sort by score, descending order
scored_shifts.sort(reverse=True)
# Print the top 3 results
for result in scored_shifts[0:3]:
print '"%s" (%02d%%)' % (result[1], int(result[0] * 100))
def main():
parser = argparse.ArgumentParser(description="Caesar cipher solver")
parser.add_argument('ciphertext', type=str, help='text to decipher')
args = parser.parse_args()
# Get every Caesar shift of the ciphertext
shifts = [etao.caesar_shift(args.ciphertext, n) for n in range(26)]
# Score each shift according to English character frequency.
# Get tuples that pair the score with the text.
scored_shifts = [(etao.score_text(shift), shift) for shift in shifts]
# Sort by score, descending order
scored_shifts.sort(reverse=True)
# Print the top 3 results
for result in scored_shifts[0:3]:
print '"%s" (%02d%%)' % (result[1], int(result[0] * 100))
def test_score_invalid_table_case(self):
with self.assertRaises(ValueError):
etao.score_text('swag', freq={'ayyy': .2, 'LMaO': 0.3})
def test_score_empty_table(self):
with self.assertRaises(ValueError):
etao.score_text('swag', freq={})
def test_score_none(self):
self.assertEqual(
etao.score_text('zzzz', freq={'a': 1.0}),
0.0
)
def test_score_invalid_table_case(self):
with self.assertRaises(ValueError):
etao.score_text('swag', freq={'ayyy': .2, 'LMaO': 0.3})
def test_score_empty_table(self):
with self.assertRaises(ValueError):
etao.score_text('swag', freq={})
def test_score_digrams(self):
self.assertEqual(
etao.score_text('the the', freq={
'th': 0.5,
'he': 0.5
}), 1.0)
def test_score_none(self):
self.assertEqual(etao.score_text('zzzz', freq={'a': 1.0}), 0.0)
