Concatenation
Append rows and columns of DataFrames.
Rows
Combine DataFrames vertically.
pd.concat([df1, df2])

Columns
Combine DataFrames horizontally.
pd.concat([df1, df2], axis=1)

Append rows and columns of DataFrames.
Combine DataFrames vertically.
pd.concat([df1, df2])

Combine DataFrames horizontally.
pd.concat([df1, df2], axis=1)
