/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 vote366 views1 answer
''' python '''
Python
-2 votes355 views1 answer
Ipython install
Python
42 votes332 views4 answers
Import datetime
Python
1 vote344 views1 answer
Merge multiple csv files
Python
2 votes324 views3 answers
Find the Runner-Up Score!
Python
4 votes351 views1 answer
Pandas find inf values
Python
0 vote326 views1 answer
Pandas fillna with median of column
Python
0 vote337 views1 answer
Import ArraField django
Python Django
40 votes337 views6 answers
Send email python
Python
0 vote357 views1 answer
Equal Sides Of An Array python
Python