/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

1 vote112 views2 answers
How to get pc name with python
Python
0 vote111 views1 answer
What mean import in python
Python
1 vote100 views1 answer
Make new app folder in django templates dir
Python
0 vote109 views1 answer
Pyqt button clicked connect
Python
9 votes128 views9 answers
Selection sort
Python
5 votes119 views3 answers
Update in django orm
Python
0 vote110 views1 answer
Import folder from another folder python
Python
11 votes119 views1 answer
Selecting items in a column of a dataframe
Python
1 vote138 views1 answer
Django group by date from datetime field
Python Django
0 vote124 views1 answer
Liste compréhension python
Python