Skip to content
masterclass Buddy
Start learning

Pandas · Method

df.melt

pandas.melt changes a DataFrame from wide format to long format. It keeps identifier columns and turns selected measurement columns into variable and value columns.

Last updated

Syntax

pandas.melt(frame, id_vars=None, value_vars=None, var_name=None, value_name='value', col_level=None, ignore_index=True)

In-depth API docs are only for subscribers: parameters, examples, common mistakes and interview practice.

Subscribe
  • DataFrame.melt
  • pivot_table
  • DataFrame.pivot
  • DataFrame.explode

Source: pandas.melt — pandas 3.1.0 documentation. Checked 2026-11-03.