Set value for particular cell in pandas DataFrame using index

Question

I\'ve created a Pandas DataFrame

df = DataFrame(index=[\'A\',\'B\',\'C\'], columns=[\'x\',\'y\'])

and got this

    x    y
A  NaN         


        

Answer 1

You can also use a conditional lookup using .loc as seen here:

df.loc[df[] == , []] = 

where is the column you want to check the variable against and is the column you want to add to (can be a new column or one that already exists). is the value you want to add to that column/row.

This example doesn't work precisely with the question at hand, but it might be useful for someone wants to add a specific value based on a condition.