Mutate columns that have spaces in names

[jjAtNxtPt]

I have a data frame that has columns containing a space in the name. I'd like to update those columns inside a mutate but can't seem to figure out how to do it. I was thinking something like this but I get an error saying the expression cannot contain an assignment:

.mutate( "SOM COL" = _["SOM COL"].fill_null(0) + 200 )

Is this possible in some way?

[cpcloud]

Yes, like this:

.mutate({"SOM COL": _["SOM COL"].fill_null(0) + 200})
.mutate(**{"SOM COL": _["SOM COL"].fill_null(0) + 200})

These two lines have equivalent behavior.

[jjAtNxtPt]

Thanks!