I have a data frame(df) as following,
A | B
--------
a1 |
a2 |*
a3 |
a1,a2,a3 are strings. I need to enter a value to column B, row a2 location(*). How can I do this using labels only?
I tried
df[df['A']=='a2']['B']='new_value'
It did not update the value as expected.
