pandas: filter rows of DataFrame with operator chaining

Question

Most operations in pandas can be accomplished with operator chaining (groupby, aggregate, apply, etc), but the only way I

Answer 1

This is unappealing as it requires I assign df to a variable before being able to filter on its values.

df[df["column_name"] != 5].groupby("other_column_name")

seems to work: you can nest the [] operator as well. Maybe they added it since you asked the question.