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Start your free trialsulaiman gannas
Python Web Development Techdegree Student 17,651 PointsNot sure where is the mistake
Please check
import unittest
from string_fun import get_anagrams
class AnagramTestCase(unittest.TestCase):
def test_empty_string(self):
with self.assertRaises(ValueError):
self.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))
1 Answer
Chris Freeman
Treehouse Moderator 68,441 PointsThe error is in the exercise of get_anagrams()
function. The test is checking if an error is raised when an empty string is passed in, so the test code has to pass the empty string. See below:
class AnagramTestCase(unittest.TestCase):
def test_empty_string(self):
with self.assertRaises(ValueError):
get_anagrams('') #<-- pass empty string
Chris Freeman
Treehouse Moderator 68,441 PointsChris Freeman
Treehouse Moderator 68,441 Pointswhat error are you seeing?