Efficient way to merge multiple large DataFrames

Question

Suppose I have 4 small DataFrames

df1, df2, df3 and df4

import pandas as pd
from functools import         


        

Answer 1

Seems like part of what dask dataframes were designed to do (out of memory ops with dataframes). See Best way to join two large datasets in Pandas for example code. Sorry not copying and pasting but don't want to seem like I am trying to take credit from answerer in linked entry.