Pandas doesn't work correctly in Spyder

[pblelloch]

By trial and error I've found that pandas won't run in my current version of Spyder.  I'm using Spyder 2.3.6 and Pandas 0.16.2 (Anaconda distribution).  As far as I can everything else works fine, and Pandas works fine outside of Spyder.  In addition the following works fine in Spyder:

import pandas as pd

pd.DataFrame(data=range(10))

But the following causes Spyder to hang:

import pandas as pd

p=pd.DataFrame(data=range(10))

The following also works:

import pandas as pd

hdstore  = pd.HDFStore('python_decimated_data.h5') 

hdstore['dCp']             

While the following causes Spyder to hang:

import pandas as pd

hdstore  = pd.HDFStore('python_decimated_data.h5') 

dCp = hdstore['dCp']             

As far as I can tell I can run Pandas, but when I try to assign a Pandas object to a variable it causes Spyder to hang.  I'm thinking that this is because Spyder is trying to do something to display the variable in the variable explorer and not being successful.

I talked to a couple of other Python programmers here and they had run into exactly the same thing, so it isn't just me.

[Big Stone]

on winpython 3.4 / Spyder 2.3.6 :

>>> import pandas as pd
>>> p=pd.DataFrame(data=range(10))

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "D:\WinPython\basedir34\build\winpython-3.4.3.amd64\python-3.4.3.amd64\lib\site-packages\pandas\core\frame.py", line 302, in __init__
    raise PandasError('DataFrame constructor not properly called!')
pandas.core.common.PandasError: DataFrame constructor not properly called!
>>>

[Paul Blelloch]

It appears that a dataframe no longer accepts a list as data in Python 3.4.  But the following works:

import pandas as pd

import numpy as np

p = pd.DataFrame(data=np.arange(10))

But that still doesn't work with Python 2.7.9 (i.e. it hangs spyder).  In fact, as far as I can tell pandas works just fine with spyder 2.3.6 and Python 3.4.3, but still doesn't with spyder 2.3.6 and Python 2.7.9.

This might push me over the edge into the world of Python 3.x ;-)

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[Paul Blelloch]

Someone on the Anaconda list also pointed out that it works with a standard (as opposed to an IPython) console.  So the bug, as far as I can tell, is limited to Spyder 2.3.6 (I haven't checked other versions) with Python 2.7 and the IPython console.

[Sean Violante]

You have to downgrade to 2.3.5.2/ wait for 2.3.7

see https://github.com/spyder-ide/spyder/issues/2654