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 vote325 views1 answer
How to show pandas last record
Python
12 votes317 views3 answers
How to delete last N columns of dataframe
Python
6 votes347 views1 answer
Python sort
Python
0 vote380 views1 answer
The grandest staircase of them all foobar solution
Python
0 vote330 views1 answer
How to change canvas background color in python tkinter
Python
0 vote369 views1 answer
Flask decorator causes views to be named the same thing
Python
109 votes339 views6 answers
While loop in python
Python
2 votes345 views2 answers
If else in dictionary comprehension python
Python
1 vote353 views2 answers
Split dataframe into multiple parts
Python
3 votes315 views1 answer
Print the heat map python
Python