How to get the max/min value in Pandas DataFrame when nan value in it

Question

Since one column of my pandas dataframe has nan value, so when I want to get the max value of that column, it just return error.

>>> d         


        

Answer 1

You can use NumPy's help with np.nanmax, np.nanmin :

In [28]: df
Out[28]: 
   A   B  C
0  7 NaN  8
1  3   3  5
2  8   1  7
3  3   0  3
4  8   2  7

In [29]: np.nanmax(df.iloc[:, 1].values)
Out[29]: 3.0

In [30]: np.nanmin(df.iloc[:, 1].values)
Out[30]: 0.0