Pipenv can't cleanly install zipline-live[ib] because of version conflicts with pandas

[rcludwick]

Description of Issue

Pandas-datareader wants pandas>19.2, but pandas is specfied >=18.1, <0.19. This prevents pipenv from generating a pipfile.lock.

Probably the easiest fix is to remove the <0.19 specification on pandas, since pandas-datareader requires >19.2.

$ pipenv install zipline-live[ib] Could not find a version that matches pandas<0.19,>=0.16.1,>=0.18.1,>=0.19.2

`$ pipenv graph zipline-live==1.1.0.5

• alembic [required: >=0.7.7, installed: 0.9.9]
  • Mako [required: Any, installed: 1.0.7]
    • MarkupSafe [required: >=0.9.2, installed: 1.0]
  • python-dateutil [required: Any, installed: 2.7.3]
    • six [required: >=1.5, installed: 1.11.0]
  • python-editor [required: >=0.3, installed: 1.0.3]
  • SQLAlchemy [required: >=0.7.6, installed: 1.2.8]
• bcolz [required: <1,>=0.12.1, installed: 0.12.1]
  • numpy [required: >=1.7, installed: 1.14.5]
• bottleneck [required: >=1.0.0, installed: 1.2.1]
  • numpy [required: Any, installed: 1.14.5]
• click [required: >=4.0.0, installed: 6.7]
• contextlib2 [required: >=0.4.0, installed: 0.5.5]
• cyordereddict [required: >=0.2.2, installed: 1.0.0]
• Cython [required: >=0.25.2, installed: 0.28.3]
• decorator [required: >=4.0.0, installed: 4.3.0]
• empyrical [required: >=0.2.2, installed: 0.5.0]
  • bottleneck [required: >=1.0.0, installed: 1.2.1]
    • numpy [required: Any, installed: 1.14.5]
  • numpy [required: >=1.9.2, installed: 1.14.5]
  • pandas [required: >=0.16.1, installed: 0.18.1]
    • numpy [required: >=1.7.0, installed: 1.14.5]
    • python-dateutil [required: >=2, installed: 2.7.3]
    • six [required: >=1.5, installed: 1.11.0]
    • pytz [required: >=2011k, installed: 2018.4]
  • pandas-datareader [required: >=0.2, installed: 0.6.0]
    • lxml [required: Any, installed: 4.2.1]
    • pandas [required: >=0.19.2, installed: 0.18.1]
    • numpy [required: >=1.7.0, installed: 1.14.5]
    • python-dateutil [required: >=2, installed: 2.7.3]
      • six [required: >=1.5, installed: 1.11.0]
    • pytz [required: >=2011k, installed: 2018.4]
    • requests [required: >=2.3.0, installed: 2.19.1]
    • certifi [required: >=2017.4.17, installed: 2018.4.16]
    • chardet [required: <3.1.0,>=3.0.2, installed: 3.0.4]
    • idna [required: >=2.5,<2.8, installed: 2.7]
    • urllib3 [required: <1.24,>=1.21.1, installed: 1.23]
    • requests-file [required: Any, installed: 1.4.3]
    • requests [required: >=1.0.0, installed: 2.19.1]
      • certifi [required: >=2017.4.17, installed: 2018.4.16]
      • chardet [required: <3.1.0,>=3.0.2, installed: 3.0.4]
      • idna [required: >=2.5,<2.8, installed: 2.7]
      • urllib3 [required: <1.24,>=1.21.1, installed: 1.23]
    • six [required: Any, installed: 1.11.0]
    • requests-ftp [required: Any, installed: 0.3.1]
    • requests [required: Any, installed: 2.19.1]
      • certifi [required: >=2017.4.17, installed: 2018.4.16]
      • chardet [required: <3.1.0,>=3.0.2, installed: 3.0.4]
      • idna [required: >=2.5,<2.8, installed: 2.7]
      • urllib3 [required: <1.24,>=1.21.1, installed: 1.23]
    • wrapt [required: Any, installed: 1.10.11]
  • scipy [required: >=0.15.1, installed: 1.1.0]
    • numpy [required: >=1.8.2, installed: 1.14.5]
• intervaltree [required: >=2.1.0, installed: 2.1.0]
  • sortedcontainers [required: Any, installed: 2.0.4]
• Logbook [required: >=0.12.5, installed: 1.4.0]
• lru-dict [required: >=1.1.4, installed: 1.1.6]
• Mako [required: >=1.0.1, installed: 1.0.7]
  • MarkupSafe [required: >=0.9.2, installed: 1.0]
• MarkupSafe [required: >=0.23, installed: 1.0]
• multipledispatch [required: >=0.4.8, installed: 0.5.0]
• networkx [required: >=1.9.1,<2.0, installed: 1.11]
  • decorator [required: >=3.4.0, installed: 4.3.0]
• numexpr [required: >=2.6.1, installed: 2.6.5]
  • numpy [required: >=1.7, installed: 1.14.5]
• numpy [required: >=1.11.1, installed: 1.14.5]
• pandas [required: >=0.18.1,<0.19, installed: 0.18.1]
  • numpy [required: >=1.7.0, installed: 1.14.5]
  • python-dateutil [required: >=2, installed: 2.7.3]
    • six [required: >=1.5, installed: 1.11.0]
  • pytz [required: >=2011k, installed: 2018.4]
• pandas-datareader [required: >=0.2.1, installed: 0.6.0]
  • lxml [required: Any, installed: 4.2.1]
  • pandas [required: >=0.19.2, installed: 0.18.1]
    • numpy [required: >=1.7.0, installed: 1.14.5]
    • python-dateutil [required: >=2, installed: 2.7.3]
    • six [required: >=1.5, installed: 1.11.0]
    • pytz [required: >=2011k, installed: 2018.4]
  • requests [required: >=2.3.0, installed: 2.19.1]
    • certifi [required: >=2017.4.17, installed: 2018.4.16]
    • chardet [required: <3.1.0,>=3.0.2, installed: 3.0.4]
    • idna [required: >=2.5,<2.8, installed: 2.7]
    • urllib3 [required: <1.24,>=1.21.1, installed: 1.23]
  • requests-file [required: Any, installed: 1.4.3]
    • requests [required: >=1.0.0, installed: 2.19.1]
    • certifi [required: >=2017.4.17, installed: 2018.4.16]
    • chardet [required: <3.1.0,>=3.0.2, installed: 3.0.4]
    • idna [required: >=2.5,<2.8, installed: 2.7]
    • urllib3 [required: <1.24,>=1.21.1, installed: 1.23]
    • six [required: Any, installed: 1.11.0]
  • requests-ftp [required: Any, installed: 0.3.1]
    • requests [required: Any, installed: 2.19.1]
    • certifi [required: >=2017.4.17, installed: 2018.4.16]
    • chardet [required: <3.1.0,>=3.0.2, installed: 3.0.4]
    • idna [required: >=2.5,<2.8, installed: 2.7]
    • urllib3 [required: <1.24,>=1.21.1, installed: 1.23]
  • wrapt [required: Any, installed: 1.10.11]
• patsy [required: >=0.4.0, installed: 0.5.0]
  • numpy [required: >=1.4, installed: 1.14.5]
  • six [required: Any, installed: 1.11.0]
• pip [required: >=7.1.0, installed: 10.0.1]
• python-dateutil [required: >=2.4.2, installed: 2.7.3]
  • six [required: >=1.5, installed: 1.11.0]
• pytz [required: >=2016.4, installed: 2018.4]
• requests [required: >=2.9.1, installed: 2.19.1]
  • certifi [required: >=2017.4.17, installed: 2018.4.16]
  • chardet [required: <3.1.0,>=3.0.2, installed: 3.0.4]
  • idna [required: >=2.5,<2.8, installed: 2.7]
  • urllib3 [required: <1.24,>=1.21.1, installed: 1.23]
• requests-file [required: >=1.4.1, installed: 1.4.3]
  • requests [required: >=1.0.0, installed: 2.19.1]
    • certifi [required: >=2017.4.17, installed: 2018.4.16]
    • chardet [required: <3.1.0,>=3.0.2, installed: 3.0.4]
    • idna [required: >=2.5,<2.8, installed: 2.7]
    • urllib3 [required: <1.24,>=1.21.1, installed: 1.23]
  • six [required: Any, installed: 1.11.0]
• scipy [required: >=0.17.1, installed: 1.1.0]
  • numpy [required: >=1.8.2, installed: 1.14.5]
• setuptools [required: >18.0, installed: 39.2.0]
• six [required: >=1.10.0, installed: 1.11.0]
• sortedcontainers [required: >=1.4.4, installed: 2.0.4]
• sqlalchemy [required: >=1.0.8, installed: 1.2.8]
• statsmodels [required: >=0.6.1, installed: 0.9.0]
  • pandas [required: Any, installed: 0.18.1]
    • numpy [required: >=1.7.0, installed: 1.14.5]
    • python-dateutil [required: >=2, installed: 2.7.3]
    • six [required: >=1.5, installed: 1.11.0]
    • pytz [required: >=2011k, installed: 2018.4]
  • patsy [required: Any, installed: 0.5.0]
    • numpy [required: >=1.4, installed: 1.14.5]
    • six [required: Any, installed: 1.11.0]
• tables [required: >=3.3.0, installed: 3.4.4]
  • numexpr [required: >=2.5.2, installed: 2.6.5]
    • numpy [required: >=1.7, installed: 1.14.5]
  • numpy [required: >=1.8.0, installed: 1.14.5]
  • six [required: >=1.9.0, installed: 1.11.0]
• toolz [required: >=0.8.2, installed: 0.9.0] `

[jasonsears]

I ran into this same issue after resolving a panda-datareaders issue where pandas.testing is missing. I resolved both by first forcing the pandas-datareaders version and then the pandas version with these two commands:

pip install --upgrade pandas-datareader==0.6.0 pip install --upgrade pandas==0.18.1

Other than this slight hiccup, I've been able to get zipline to execute.