/Python/Pandas create a new column based on condition of two columns

Pandas create a new column based on condition of two columns

Pandas create new column conditional on other columns

# For creating new column with multiple conditions
conditions = [
    (df['Base Column 1'] == 'A') & (df['Base Column 2'] == 'B'),
    (df['Base Column 3'] == 'C')]
choices = ['Conditional Value 1', 'Conditional Value 2']
df['New Column'] = np.select(conditions, choices, default='Conditional Value 1')

Pandas create a new column based on condition of two columns

conditions = [
    df['gender'].eq('male') & df['pet1'].eq(df['pet2']),
    df['gender'].eq('female') & df['pet1'].isin(['cat', 'dog'])
]

choices = [5,5]

df['points'] = np.select(conditions, choices, default=0)

print(df)
     gender      pet1      pet2  points
0      male       dog       dog       5
1      male       cat       cat       5
2      male       dog       cat       0
3    female       cat  squirrel       5
4    female       dog       dog       5
5    female  squirrel       cat       0
6  squirrel       dog       cat       0

Source: stackoverflow.com

Similar codes

0 vote226 views1 answer
Listview
Python
0 vote277 views1 answer
How to make an ai
Python
1 vote226 views1 answer
How to set up dataframe from csv
Python
0 vote214 views1 answer
Load py file converted from .ui file
Python
1 vote211 views1 answer
Where is titainum ore skyblock
Python
1 vote243 views2 answers
Get env variable linux python
Python
61 votes225 views6 answers
Python get dir
Python
0 vote235 views1 answer
Python ufeff character from file
Python
12 votes232 views4 answers
Python raise TypeError
Python
5 votes233 views1 answer
How to get a dataframe column as a list
Python