pandas.core.reshape.get_dummies¶
- pandas.core.reshape.get_dummies(data, prefix=None, prefix_sep='_', dummy_na=False)¶
Convert categorical variable into dummy/indicator variables
Parameters : data : array-like or Series
prefix : string, default None
String to append DataFrame column names
prefix_sep : string, default ‘_’
If appending prefix, separator/delimiter to use
dummy_na : bool, default False
Add a column to indicate NaNs, if False NaNs are ignored.
Returns : dummies : DataFrame
Examples
>>> s = pd.Series(list('abca'))
>>> get_dummies(s) a b c 0 1 0 0 1 0 1 0 2 0 0 1 3 1 0 0
>>> s1 = ['a', 'b', np.nan]
>>> get_dummies(s1) a b 0 1 0 1 0 1 2 0 0
>>> get_dummies(s1, dummy_na=True) a b NaN 0 1 0 0 1 0 1 0 2 0 0 1
See also Series.str.get_dummies.