I got an error in the tutorial when I cloned the notebook from Pipeline Tutorial - Lesson 3. Other people also got similar errors, as listed here (https://www.quantopian.com/posts/keyerror-on-pipeline-tutorial-lesson-5). I don't know enough about Python, but could it be that there is an extra comma on line 397 of run_pipeline? Also, I have no idea who should fix this. Thanks for your support.

My code looks like:

def make_pipeline():

  mean_close_10 = SimpleMovingAverage(inputs=[USEquityPricing.close], window_length=10)

  return Pipeline(  
    columns={  
      '10_day_mean_close': mean_close_10  
    }  
  )

result = run_pipeline(make_pipeline(), '2015-05-05', '2015-05-05')  
result.head()  

The resulting error looks like:

---

KeyError Traceback (most recent call last)
in ()
----> 1 result = run_pipeline(make_pipeline(), '2015-05-05', '2015-05-05')
2 result.head()

/build/src/extensions/extensions/main.py in run_pipeline(pipeline, start_date, end_date) 396 start_date=adjust_date,
397 end_date=adjust_date,
--> 398 )
399 def run_pipeline(pipeline, start_date, end_date):
400 """

/build/src/extensions/extensions/main.py in run_pipeline(pipeline, start_date, end_date) 404 PipelineEngine.run_pipeline.
405 """
--> 406 return engine.run_pipeline(pipeline, start_date, end_date)
407 return run_pipeline
408

/build/src/qexec_repo/zipline_repo/zipline/pipeline/engine.pyc in run_pipeline(self, pipeline, start_date, end_date) 171 dates,
172 assets,
--> 173 initial_workspace={self._root_mask_term: root_mask_values},
174 )
175

/build/src/qexec_repo/zipline_repo/zipline/pipeline/engine.pyc in compute_chunk(self, graph, dates, assets, initial_workspace) 352 loader = get_loader(term)
353 loaded = loader.load_adjusted_array(
--> 354 to_load, mask_dates, assets, mask,
355 )
356 workspace.update(loaded)

/build/src/qexec_repo/zipline_repo/zipline/pipeline/loaders/equity_pricing_loader.pyc in load_adjusted_array(self, columns, dates, assets, mask) 75 start_date,
76 end_date,
---> 77 assets,
78 )
79 adjustments = self.adjustments_loader.load_adjustments(

/build/src/qexec_repo/qexec/sources/resource_proxy.pyc in method(self, args, **kwargs) 134 def method(self, *args, **kwargs):
135 with self.resource as proxied:
--> 136 return getattr(proxied, name)(args, **kwargs)
137 return method
138

/build/src/qexec_repo/zipline_repo/zipline/data/us_equity_pricing.pyc in load_raw_arrays(self, columns, start_date, end_date, assets) 560 def load_raw_arrays(self, columns, start_date, end_date, assets):
561 # Assumes that the given dates are actually in calendar.
--> 562 start_idx = self._calendar.get_loc(start_date)
563 end_idx = self._calendar.get_loc(end_date)
564 first_rows, last_rows, offsets = self._compute_slices(

/build/src/qexec_repo/zipline_repo/zipline/utils/memoize.pyc in get(self, instance, owner) 51 return self._cache[instance]
52 except KeyError:
---> 53 self._cache[instance] = val = self._get(instance)
54 return val
55

/build/src/qexec_repo/zipline_repo/zipline/data/us_equity_pricing.pyc in calendar(self) 472 @lazyval
473 def _calendar(self):
--> 474 return DatetimeIndex(self.table.attrs['calendar'], tz='UTC')
475
476 @lazyval

/usr/local/lib/python2.7/dist-packages/bcolz/attrs.pyc in getitem(self, name) 93
94 def getitem(self, name):
---> 95 return self.attrs[name]
96
97 def setitem(self, name, obj):

KeyError: 'calendar'

Hi Enrique,

We've got to wait till Monday for this to get fixed (its failing on every single tutorial & notebook).
Meanwhile the IDE is still there :)

Pluse

Hi Enrique, I've notified our engineers, they will look into the issue. Thanks for reporting it.

The issue has been fixed, you should now be able to run the notebooks all the way through. Sorry for the inconvenience.

Thanks for putting this tutorial together. I'm learning a ton and loving it!