How do I merge two DataFrames in Pandas?

How do I merge two DataFrames in Pandas?

You can use the merge() function in Pandas to combine two DataFrames. What kind of merge are you looking for?

I want to do an inner join based on a common column.

You can achieve that by specifying the how parameter as 'inner' and the on parameter with the common column name. For example:

merged_df = pd.merge(df1, df2, how='inner', on='common_column')

What if the column names are different in both DataFrames?

In that case, you can use the left_on and right_on parameters to specify the column names from each DataFrame. For example:

merged_df = pd.merge(df1, df2, how='inner', left_on='left_column', right_on='right_column')

Can I merge more than two DataFrames at once?

Yes, you can chain multiple merge() calls or use reduce() from functools to merge a list of DataFrames.