What is the difference between concat() and merge() in pandas?

Data Science with Python Medium

Data Science with Python — Medium

What is the difference between concat() and merge() in pandas?

Key points

  • concat() stacks DataFrames, merge() joins based on keys
  • concat() is for combining along an axis, merge() is for database-like joins
  • Understanding the difference between stacking and joining is key to choosing the right method

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