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Using Python for data analysis (12) pandas basics: data merging and pythonpandas

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Using Python for data analysis (12) pandas basics: data merging and pythonpandas

Pandas provides three main methods to merge data:

  • Pandas. merge () method: database-style merge;
  • Pandas. concat () method: axial join, that is, stacking multiple objects along one axis;
  • Instance method combine_first (): Merge overlapping data.

Pandas. merge () method: database-style merge. For example, use the merge () method to merge two dataframes: Pandas. concat () method: axial join, that is, stacking multiple objects together along one axisFor example, the instance method combine_first () method: Merge overlapping data. For example, the next article is: Use Python for data analysis (13) pandas basics: Data remodeling/axial conversion, if you are interested, please follow this blog and add comments for discussion.

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