Running the example in the README results with an error

[idanre1]

Hi
I have running ubuntu 18 LTS
I have installed pipeline-live using the following:
sudo apt install python3 python3-pip python3-tk
pip3 install pipeline-live

then I am trying to run the example in the README of the github which result with the following error
sudo apt install python3 python3-pip python3-tk
python3 pipeline.py
Traceback (most recent call last):
File "pipeline.py", line 1, in
from pipeline_live.engine import LivePipelineEngine
File "/home/idan/.local/lib/python3.6/site-packages/pipeline_live/engine.py", line 11, in
from zipline.lib.adjusted_array import ensure_adjusted_array, ensure_ndarray
File "/home/idan/.local/lib/python3.6/site-packages/zipline/init.py", line 29, in
from .utils.run_algo import run_algorithm
File "/home/idan/.local/lib/python3.6/site-packages/zipline/utils/run_algo.py", line 20, in
from zipline.finance import metrics
File "/home/idan/.local/lib/python3.6/site-packages/zipline/finance/metrics/init.py", line 43, in
from .tracker import MetricsTracker
File "/home/idan/.local/lib/python3.6/site-packages/zipline/finance/metrics/tracker.py", line 19, in
from ..ledger import Ledger
File "/home/idan/.local/lib/python3.6/site-packages/zipline/finance/ledger.py", line 28, in
from zipline.finance.transaction import Transaction
File "/home/idan/.local/lib/python3.6/site-packages/zipline/finance/transaction.py", line 20, in
from zipline.protocol import DATASOURCE_TYPE
File "/home/idan/.local/lib/python3.6/site-packages/zipline/protocol.py", line 20, in
from .utils.enum import enum
File "/home/idan/.local/lib/python3.6/site-packages/zipline/utils/enum.py", line 43, in
method='bfill',
File "/home/idan/.local/lib/python3.6/site-packages/pandas/core/series.py", line 3325, in reindex
return super(Series, self).reindex(index=index, **kwargs)
File "/home/idan/.local/lib/python3.6/site-packages/pandas/core/generic.py", line 3689, in reindex
fill_value, copy).finalize(self)
File "/home/idan/.local/lib/python3.6/site-packages/pandas/core/generic.py", line 3702, in _reindex_axes
tolerance=tolerance, method=method)
File "/home/idan/.local/lib/python3.6/site-packages/pandas/core/indexes/base.py", line 3622, in reindex
tolerance=tolerance)
File "/home/idan/.local/lib/python3.6/site-packages/pandas/core/indexes/base.py", line 3248, in get_indexer
indexer = self._get_fill_indexer(target, method, limit, tolerance)
File "/home/idan/.local/lib/python3.6/site-packages/pandas/core/indexes/base.py", line 3278, in _get_fill_indexer
limit)
File "/home/idan/.local/lib/python3.6/site-packages/pandas/core/indexes/base.py", line 3300, in _get_fill_indexer_searchsorted
side)
File "/home/idan/.local/lib/python3.6/site-packages/pandas/core/indexes/base.py", line 4200, in _searchsorted_monotonic
raise ValueError('index must be monotonic increasing or decreasing')
ValueError: index must be monotonic increasing or decreasing

please help

[idanre1]

Found the issue
zipline is a dependency of pipeline-live
apparently acodring to the release notes zipline should only wotk with specific versions of pandas and numpy.
From release notes of version 1.3.0: https://github.com/quantopian/zipline/releases
As part of this release, we're now building and testing Zipline with two package configurations:

"Stable", using numpy version 1.11 and pandas version 0.18.1.
"Latest", using numpy version 1.14 and pandas version 0.22.0.

Other combinations of numpy and pandas may work, but these package sets will be built and tested during our normal development cycle.

I would suggest changing the README file for making sure the required pandas and numpy are installed prior to installing pipeline-live

Idan

[anthonyshay]

Hi there, I'm new to quantopian. trying to run this example on Ubuntu18 using the docker image of pylivetrader. I'm getting the same error

ValueError: numpy.ufunc has the wrong size, try recompiling

please help.