I have a Pandas DataFrame which looks like:

and there is a (boolean) condition crit which is a mix of some rules based on some other columns. What I want to achieve is:

If the condition crit is met (for a row):

1. Replace Source, Location by constant x and y.
2. Replace Campaign by New Campaign.

For example if row #1 and #3 match the condition, desired output is:

Currently, I am doing this in 2 steps, firstly

df.loc[crit, ['Source', 'Location']] = ['x', 'y']

then

df.loc[crit, 'Campaign'] = df.loc[crit, 'New Campaign']

But wonder if there is a way to do it in one go. df.loc[crit, ['Source', 'Location', 'Campaign']] = ['x', 'y', df.loc[crit, 'New Campaign']] throws error.