How to solve error: Zip argument #1 must support iteration
Solution 1
Your gen_num_pointers()
and gen_num_words()
methods return an integer. zip()
can only work with sequences (lists, sets, tuples, strings, iterators, etc.)
You don't need to call zip()
at all here; you are testing one integer against another:
def test_get_num_words(self):
word_part = ['13797906', '23', 'n', '04', 'flood', '0', 'inundation', '0', 'deluge', '0', 'torrent', '0', '005', '@', '13796604', 'n', '0000', '+', '00603894', 'a', '0401', '+', '00753137', 'v', '0302', '+', '01527311', 'v', '0203', '+', '02361703', 'v', '0101', '|', 'an', 'overwhelming', 'number', 'or', 'amount;', '"a', 'flood', 'of', 'requests";', '"a', 'torrent', 'of', 'abuse"']
self.assertEqual(4, self.wn.get_num_words(word_part))
def test_get_num_pointers(self):
before_at = '13797906 23 n 04 flood 0 inundation 0 deluge 0 torrent 0 005'
self.assertEqual(5, self.wn.get_num_pointers(before_at))
is plenty.
You also want to avoid using a leading 0
on integer literals. 04
is interpreted as an octal number; if you ever had to change that number to using more digits, or using digits outside of the range 0-7, you'd be in for a nasty surprise:
>>> 010
8
>>> 08
File "<stdin>", line 1
08
^
SyntaxError: invalid token
Solution 2
Your test should look like this:
def test_get_num_pointers(self):
before_at = '13797906 23 n 04 flood 0 inundation 0 deluge 0 torrent 0 005'
expected = 5
real = self.wn.get_num_pointers(before_at)
self.assertEqual(real, expected)
It only makes sense to use a for
loop when you're asserting more than one value.
Solution 3
The error explains what is going on: the arguments to zip need to be iterables (ie lists, tuples, or something else you can actually iterate through). You are passing ints, ie single numbers.
I am not sure exactly what you are trying to do by calling zip, but maybe you just want to compare real and expected directly?
JohnConneely
Updated on July 03, 2020Comments
-
JohnConneely almost 4 years
I have two test methods with the same problem, here are the original methods in the main class:
def get_num_words(self, word_part): """ 1 as default, may want 0 as an invalid case """ if word_part[3] == '0a': self.num_words = 10 else: self.num_words = int(word_part[3]) return self.num_words def get_num_pointers(self, before_at): self.num_pointers = int(before_at.split()[-1]) return self.num_pointers
And here are the two test classes:
def test_get_num_words(self): word_part = ['13797906', '23', 'n', '04', 'flood', '0', 'inundation', '0', 'deluge', '0', 'torrent', '0', '005', '@', '13796604', 'n', '0000', '+', '00603894', 'a', '0401', '+', '00753137', 'v', '0302', '+', '01527311', 'v', '0203', '+', '02361703', 'v', '0101', '|', 'an', 'overwhelming', 'number', 'or', 'amount;', '"a', 'flood', 'of', 'requests";', '"a', 'torrent', 'of', 'abuse"'] expected = 04 real = self.wn.get_num_words(word_part) for r, a in zip(real, expected): self.assertEqual(r, a) def test_get_num_pointers(self): before_at = '13797906 23 n 04 flood 0 inundation 0 deluge 0 torrent 0 005' expected = 5 real = self.wn.get_num_pointers(before_at) for r, a in zip(real, expected): self.assertEqual(r, a)
This is the error they are giving out:
TypeError: zip argument #1 must support iteration
The program works fully and these are the only 2 tests not working in 20 different tests.