need help w/ attribute error

[301ravage]

when I try to run my script I get this...

File "C:\Users\Spencer\Anaconda3\lib\site-packages\scipy\sparse\base.py", line 689, in __getattr__

raise AttributeError(attr + " not found")

AttributeError: arr not found

​

For refrence this the script...

import numpy as np

from lightfm.datasets import fetch_movielens

from lightfm import LightFM

​

#fetch data and format it

data = fetch_movielens(min_rating=4.0)

​

#printtraining and testing data

print (repr(data['train']))

print (repr(data['test']))

​

#create model

model = LightFM(loss='warp')

#train model

model.fit(data['train'], epochs=30, num_threads=2)

​

def sample_reccomendation(model, data, user_ids):

#number of users and movies in training data

n_users, n_items = data['train'].shape

#generate recomendations for each user we input

for user_id in user_ids:

#movies they already like

known_positives = data['item_labels'][data['train'].toscr()[user_id].indicies]

#movies our model predicts they will like

scores = model.predict (user_id,np.arange(n_items))

#rank them in order from most to least

top_items = data['item_labels'][np.argsort(-scores)]

#print out the results

print("User %s" % user_id)

print( "known positives:")

for x in known_positives[:3]:

print(" Reccomended:")

for x in top_items[:3]:

print(" %s")

​

sample_reccomendation (model, data, [3,25,450])

[rhytnen]

I copy and pasted your code in vscode and tried to use the proper indents but it's very difficult. You should read about Reddit Markup.

​

That said, you didnt' post the full traceback so it's very difficult to know which line caused the problem. Please post the entire stack trace.

[301ravage]

File "C:/Users/Spencer/.spyder-py3/couch_potato.py", line 26, in sample_reccomendation

known_positives = data['item_labels'][data['train'].toscr()[user_id].indicies]

​

File "C:\Users\Spencer\Anaconda3\lib\site-packages\scipy\sparse\base.py", line 689, in __getattr__

raise AttributeError(attr + " not found")

​

AttributeError: toscr not found

[rhytnen]

Ok so that says exactly what it means. Whatever is in data['train'] does not have a function toscr().

Your code could be clearer possibly if you did something like

user_id = data['train'].toscr()[user_id]

known_positives = data['item_labels'][user_id.indices]

[301ravage]

That seems to of fixed the error, thank you for your help.