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POValue Error when Slicing in Pandas
 

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  1. POValue Error when Slicing in Pandas
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    <p>I have a DataFrame that I would like to use the 'str.contrains()' method. I believed I had found how to do this when I read <a href="https://stackoverflow.com/questions/11350770/pandas-dataframe-select-by-partial-string">pandas + dataframe - select by partial string</a>. However, I keep getting a value error.</p> <p>My DataFrame is as follow:</p> <pre><code>ID,ENROLLMENT_DATE,TRAINER_MANAGING,TRAINER_OPERATOR,FIRST_VISIT_DATE 1536D,12-Feb-12,"06DA1B3-Lebanon NH",,15-Feb-12 F15D,18-May-12,"06405B2-Lebanon NH",,25-Jul-12 8096,8-Aug-12,"0643D38-Hanover NH","0643D38-Hanover NH",25-Jun-12 A036,1-Apr-12,"06CB8CF-Hanover NH","06CB8CF-Hanover NH",9-Aug-12 8944,19-Feb-12,"06D26AD-Hanover NH",,4-Feb-12 1004E,8-Jun-12,"06388B2-Lebanon NH",,24-Dec-11 11795,3-Jul-12,"0649597-White River VT","0649597-White River VT",30-Mar-12 30D7,11-Nov-12,"06D95A3-Hanover NH","06D95A3-Hanover NH",30-Nov-11 3AE2,21-Feb-12,"06405B2-Lebanon NH",,26-Oct-12 B0FE,17-Feb-12,"06D1B9D-Hartland VT",,16-Feb-12 127A1,11-Dec-11,"064456E-Hanover NH","064456E-Hanover NH",11-Nov-12 161FF,20-Feb-12,"0643D38-Hanover NH","0643D38-Hanover NH",3-Jul-12 A036,30-Nov-11,"063B208-Randolph VT","063B208-Randolph VT", 475B,25-Sep-12,"06D26AD-Hanover NH",,5-Nov-12 151A3,7-Mar-12,"06388B2-Lebanon NH",,16-Nov-12 CA62,3-Jan-12,,, D31B,18-Dec-11,"06405B2-Lebanon NH",,9-Jan-12 20F5,8-Jul-12,"0669C50-Randolph VT",,3-Feb-12 8096,19-Dec-11,"0649597-White River VT","0649597-White River VT",9-Apr-12 14E48,1-Aug-12,"06D3206-Hanover NH",, 177F8,20-Aug-12,"063B208-Randolph VT","063B208-Randolph VT",5-May-12 553E,11-Oct-12,"06D95A3-Hanover NH","06D95A3-Hanover NH",8-Mar-12 12D5F,18-Jul-12,"0649597-White River VT","0649597-White River VT",2-Nov-12 C6DC,13-Apr-12,"06388B2-Lebanon NH",, 11795,27-Feb-12,"0643D38-Hanover NH","0643D38-Hanover NH",19-Jun-12 17B43,11-Aug-12,,,22-Oct-12 A036,11-Aug-12,"06D3206-Hanover NH",,19-Jun-12 </code></pre> <p>Then I run the following code:</p> <pre><code>test = pandas.read_csv('testcsv.csv') test[test.TRAINER_MANAGING.str.contains('Han', na=False)] </code></pre> <p>and I get the following error:</p> <pre><code>--------------------------------------------------------------------------- ValueError Traceback (most recent call last) &lt;ipython-input-54-e0c4624c9346&gt; in &lt;module&gt;() ----&gt; 1 test[test.TRAINER_MANAGING.str.contains('Han', na=False)] .virtualenvs/ipython/lib/python2.7/site-packages/pandas/core/frame.pyc in __getitem__(self, key) 1958 1959 # also raises Exception if object array with NA values -&gt; 1960 if com._is_bool_indexer(key): 1961 key = np.asarray(key, dtype=bool) 1962 return self._getitem_array(key) .virtualenvs/ipython/lib/python2.7/site-packages/pandas/core/common.pyc in _is_bool_indexer(key) 685 if not lib.is_bool_array(key): 686 if isnull(key).any(): --&gt; 687 raise ValueError('cannot index with vector containing ' 688 'NA / NaN values') 689 return False ValueError: cannot index with vector containing NA / NaN values </code></pre> <p>I feel like I am missing something simple. Any help would be appreciated. </p>
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      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USCommunity
    1. USBigHandsome
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
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      1. POValue Error when Slicing in Pandas
      1. This table or related slice is empty.
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    1. COadded as an [issue on github](https://github.com/pydata/pandas/issues/2806).
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      1. POValue Error when Slicing in Pandas
      1. USAndy Hayden
 

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