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Python Python Testing Be Assertive assertRaises

Now add a new test, test_no_args that should also assertRaises(ValueError). This time, call get_anagrams() with no argum

keeps saying "Oops!! It looks like Task 1 is no longer passing",, i am stuck ,help please

tests.py
import unittest

from string_fun import get_anagrams


class AnagramTestCase(unittest.TestCase):
    def test_empty_string(self):

        with self.assertRaises(ValueError):
            get_anagrams()
        pass
    def test_no_args(self):
        with self.assertRaises(ValueError):
            get_anagrams()
string_fun.py
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
MOD
Chris Freeman
Treehouse Moderator 68,064 Points

The call to get_anagrams() In the test test_empty_string, the call to get_anagrams() is missing the actual empty string ""

Edit: Also, the pass statement is no longer needed and should be removed for clarity.

Edit2: Typo fix

Did you mean get_anagrams()? :laughing:

Chris Freeman
Chris Freeman
Treehouse Moderator 68,064 Points

Yikes! Will edit to fix! Pitfalls of answering questions via iPhone!

Yeah, the iPhone keyboard is awful. I always use Treehouse on a desktop computer :smiley:

Sometimes, I just hate the word completion thing on the iPhone keyboard. Other times, I love it. :laughing:

You still have a typo :laughing: :laughing: :laughing:

Time for an edit 3 xD