Python - concatenate if null

# Option 1
df['concat'] = np.where(df['var_1'] == '', df['var_2'], df['var_1'] + '_u')

# Option 2
def concat_fields(field1, field2):
        if field1.empty:
            return field2
        else:
            return field1 + '_u'

Source: stackoverflow.com

Similar codes

0 vote169 views1 answer
Paramhans ramchandra das
Python
5 votes175 views2 answers
Beautifulsoup find by class
Python
1 vote171 views1 answer
Get a column that corresponds to the average of two columns pandas
Python
0 vote197 views1 answer
How to get foregine kew field in models.py
Python
6 votes166 views1 answer
Get all combinations from two lists python
Python
1 vote180 views1 answer
Price for bazaar item hypixel python
Python
-1 vote168 views1 answer
How to normalize a 1d numpy array
Python
1 vote166 views1 answer
Jupyter no output cell
Python
0 vote178 views1 answer
Pyqt button hover color
Python
16 votes164 views5 answers
Pandas groupby aggregate multiple columns
Python