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Yu-Chien Huang
Courses Plus Student 16,672 Pointscould any one tell me whats going with the error:TypeError: 'set' object does not support indexing? thank u
after i ran mu code, i got feedback from terminal: Traceback (most recent call last): File "set_wordgame.py", line 21, in <module> challenge_word = random.choice(WORDS) File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/random.py", line 259, in choice return seq[i] TypeError: 'set' object does not support indexing
=>well , i dont know what happened, could anyone help ? thank u!
2 Answers
Jeff Muday
Treehouse Moderator 28,720 PointsI don't know if this will help you but sets are not considered to be "ordered". The only way to impose an order and use index operations is to convert the set to a list. See an example below. Notice that when it is a list, I can access the elements by their numeric index, when it is a set it throws an error.
Python 3.6.4 (v3.6.4:d48eceb, Dec 19 2017, 06:04:45) [MSC v.1900 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> beatles = {'John Lennon','Paul McCartney','Ringo Star','George Harrison'}
>>> beatles
{'George Harrison', 'John Lennon', 'Paul McCartney', 'Ringo Star'}
>>> beatles.index('Ringo Star')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: 'set' object has no attribute 'index'
>>> beatles_list = list(beatles)
>>> beatles_list
['George Harrison', 'John Lennon', 'Paul McCartney', 'Ringo Star']
>>> beatles_list.index('Ringo Star')
3
>>> beatles[3]
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: 'set' object does not support indexing
>>> beatles_list[3]
'Ringo Star'
>>>
Joseph Naungayan
2,530 PointsIf anyone else runs into this problem, in my case it's because I used { } instead of ( ) in the WORDS tuple.
Steven Parker
231,236 PointsA great example of why short excerpts aren't always enough to spot a problem! But congratulations on finding it.
Steven Parker
231,236 PointsSteven Parker
231,236 PointsYou'll need to share more of the code to make it possible to analyze the issue.
A great way to share code is to make a snapshot of your workspace and post the link to it here.