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BUG: fillna upconversion on Frame #3386

jreback opened this issue Apr 17, 2013 · 1 comment


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commented Apr 17, 2013

Thought had fixed this.....but guess not

In [2]: csv=u"""a,a,,a

In [3]: df = pd.read_csv(StringIO(csv), header=None)

In [4]: df
   0  1   2  3
0  a  a NaN  a
1  b  b NaN  b
2  c  c NaN  c

In [5]: df.dtypes
0     object
1     object
2    float64
3     object
dtype: object

In [6]: df.fillna({ 2: 'foo' })

ValueError: could not convert string to float: foo


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commented Aug 16, 2013

closed by #3482

@jreback jreback closed this Aug 16, 2013

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