find index function suggested

[Seandump101]

It would be very useful to have a built in find index of specific column by value function.
maybe something like this:
"Dataframe.findIndex "

In Js it would be:

function findIndex(colname,value) {
// index of column with specific value
let query_df = df.query(df[colname].eq(value)).index;
return query_df;
}