title: How to replicate vlookup in python to fill missing data?
body: <p>I am new to python and need some help please.
  I am looking at AirBnB data for a country over several months and noticed that for some later months, some fields have not been extracted in the source files. I have appended all the months' data together and the dataframe contains data for a city from Aug 2018 - Jan 2021 (with Jul 2020- Sep 2020 missing/ not available). I am thinking of using the equivalent of vlookup into python, so that I am able to find  AirBnB_ID in the section of the dataframe from 2018-2020 June, to fill the missing data in the dataframe from Oct 2020- Jan 2021 such as number of bathrooms, bedroom, guests_included and bed_type. I have not been able to find how to do this yet and would really appreciate any help.</p>
  <p>If there is a better way than what I am thinking, I would also welcome the thought.</p>
  <p>Appreciate any support I can get. Thank you.</p>