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Start your free trialMUZ140921 Fredy Ndhlovu
2,722 PointsChallenge Task 2 of 2 Am stuck on task 2 Python testing challenge assertIn fail
import unittest
from string_fun import get_anagrams
class AnagramTestCase(unittest.TestCase): def test_empty_string(self): with self.assertRaises(ValueError): get_anagrams("")
import unittest
from string_fun import get_anagrams
class AnagramTestCase(unittest.TestCase):
def test_empty_string(self):
with self.assertRaises(ValueError):
get_anagrams('')
import itertools
def is_palindrome(yarn):
"""Return whether or not a string is a palindrome.
A palindrome is a word/phrase that's the same in
both directions.
"""
return yarn == yarn[::-1]
def get_anagrams(*yarn):
"""Return a list of anagrams for a string."""
# If only one letter came in, return it
if yarn:
if len(yarn[0]) == 1:
return list(yarn)
elif len(yarn[0] == 0):
raise ValueError("Must provide at least two letters")
else:
raise ValueError("Must provide at least two letters")
# Get all of the words from the dictionary
words = set([
w.strip().lower() for w in open('words.txt')
])
output = set()
for thread in yarn:
thread = thread.lower()
# Find all possible anagrams
for i in range(2, len(thread)):
fibers = set(
[''.join(w) for w in itertools.permutations(thread, i)]
)
output.update(fibers.intersection(words))
# Finally, return all of the combinations that are in the dictionary
return sorted(list(output))
3 Answers
Chase Marchione
155,055 PointsHi Fredy,
The challenge asks us to create a new test named test_no_args. We're told that this test, like the test_empty_string test, also uses 'assertRaises(ValueError)', so you'll find that the first two lines of our new test are very similar to the test_empty_string test--the difference is the test name. We are then told to call get_anagrams() without entering any arguments, so instead of passing in an empty string, we'll pass in nothing extra.
It may help to think about the names of our tests: with our test that we called test_empty_string, we pass an empty string to get_anagrams(), and with our test that we call test_no_args(), we pass in no arguments to that method.
import unittest
from string_fun import get_anagrams
class AnagramTestCase(unittest.TestCase):
def test_empty_string(self):
with self.assertRaises(ValueError):
get_anagrams('')
def test_no_args(self):
with self.assertRaises(ValueError):
get_anagrams()
Hope this helps!
MUZ140921 Fredy Ndhlovu
2,722 PointsHa tried this but not passing
import unittest from string_fun import get_anagrams class AnagramTestCase(unittest.TestCase): def test_empty_string(self): with self.assertRaises(ValueError): get_anagrams('') def test_no_args(self): with self.assertRaises(ValueError): get_anagrams()
David Heller
1,696 PointsI have that answer in
import unittest
from string_fun import get_anagrams
class AnagramTestCase(unittest.TestCase):
def test_empty_string(self):
with self.assertRaises(ValueError):
get_anagrams('')
def test_no_args(unittest.TestCase):
with self.assertRaises(ValueError):
get_anagrams()
but all i get is Oops! It looks like Task 1 is no longer passing.
I've restarted the exercise, renetered the answers, but still can't get it to pass.
My answer seems to be correct.