Parser for realty sites in order to get data
When you use our program for the first time, run data_base_creation.py in order to create database and then run search_cian.py.
search_cian.py will save all flats in database and if there was no exceptions, everything will be also saved in cian.csv
In order to save database in csv file use the following command
mongoexport --host=localhost --db=flats --collection=coll --type csv --fieldFile fields.txt --out=database.csv --quiet