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Andrei Kozlov

Sleeping face
Andrei hasn't been on the service for a long time.
But on Freelancehunt, there are also 4457 freelancers in category Python, who will professionally and timely complete a project of any complexity.

Serbia Belgrade, Serbia
4 years back
Available for hire available for hire
5 Safes completed
7 years back
3 clients
on the service 8 years

Rating

Successful projects
100%
Average rating
No data
Rating
250
5 projects
Python

Skills and abilities

Portfolio


  • 31 USD

    Web app by Facebook

    Python
    A web application on #django2 to predict the timelines (on the example of the fluctuation of the currency pair UAH/USD) using the Prophet from Facebook. The foundation of the project was
    Jupyter notebook, the code from which it was required to be adapted to the customer's needs. Additionally, the data tables for the predictive model training and the database containing added holidays required to adjust this model were implemented.
  • The OLX Parker

    Data Parsing
    A fast multi-flow ad parser from the #olx board with graphic interface and proxy support. The average speed of the program: 1000 ads with phones in 1.5 minutes, without duplicates. #parser provides the possibility to search by keyword and search by categories with parameters. The mobile phone number extract function, despite the fact that it is quite demanded, for those who don’t need it, can be disabled, which will save even more time. Additionally, there are functions to extract only the last N pieces of ads and stop the parser at any time. The data is stored in the Excel file, in which the following fields are recorded: id (ad number), url (link to an advertisement), Updated (date and time of the last update of the advertisement), Title, Description, Business (user account type), Name, Phone, City, Region, Price, Currency, and other parameters depending on the category of advertisements, such as: Status, Subcategories, Size, Furniture Types, etc.
  • 112 USD

    Advertising Parsers and Monitoring System

    Python
    For the three Spanish car ad panels, the #parsers of ads with data record were written in the #MySQL5 database designed under this task. A web system of parser monitoring on #django was also implemented, making analytics on the data collected in the administration. Unfortunately, the customer has only paid part of the work, but promises to pay off the debt. Work through the seafood.
  • 31 USD

    Parser of the maximum bookmaker coefficients

    Data Parsing
    The Parser in a convenient format retains the maximum coefficients for the football matches selected by the user of the leagues (both individually and by a file list), in the bookmaker office selected by him, based on the data of the AllBestBets wheel service. The customer needed only certain markets, so the data was filtered and then sorted by date. The possibility of transition is made by reference to a specific match. Parser uses a proxy, written on #python.
  • 8 USD

    Online shop Salmoru

    Data Parsing
    The online shop of fishing accessories Salmoru.com. The data is recorded in the CSV file. The customer needed only two categories - shakes and shakes.
  • 3 USD

    Parking of the St. Petersburg Guide

    Data Parsing
    Parking of the St. Petersburg Guide — example of freelancer's portfolio work in category Data Parsing
    Parking of the list of companies of St. Petersburg (org78.ru). It was quite simple for the parsing site, but I don’t think it’s the most informative.
  • Parking car filters with Wixfilters.com

    Data Parsing
    He wrote a script on the parsing #base_data of car filters (http://www.wixfilters.com/Lookup/Applications.aspx). The program consistently selects all options (if there is the type of "show everything" option, then it only selects it) and records the data in the csv table. The project has not been made because. He wanted to make sure that everything works, but as long as the script was deleted, the client picked up a team of 20 people who gathered this base for him manually.
  • 7 USD

    Applications from Exkavator.ru

    Data Parsing
    Screenshots for the parsing of applications on https://exkavator.ru/exchange/trade/main.html. Applications with contact details are stored in the CSV table.
  • 7 USD

    Parking of ICO-companies

    Data Parsing
    Parking emails from the #ico list of projects on https://icobench.com/icos. Parser goes through all the pages of the list, goes to the company’s website and collects all the #email from the main page, keeping them in the #csv file.
  • 31 USD

    Parsers of Ocato

    Python
    Parsers of Ocato — example of freelancer's portfolio work in category Python
    #parser of the inner town districts of OKATO according to the data from Rostata. The customer needed a special data sampling algorithm, a comparison with a file containing a list of regular expressions applied on the corporate website, and a record of the outcome file with a table of intra-city codes and comparison results tables, taking into account the exceptions (which are recorded in a separate file). In general, the logic is complicated, the order was performed gradually with the payment for each stage. The parser’s high speed was achieved by using the #pandas library and vector operations.
  • 7 USD

    Parking email guides

    Data Parsing
    Parking mail guides from the site Tonkosti.ru - country, city, name, email and link to the page on the site. The result was 1201 mail (guid).
  • 8 USD

    The Technomarin Online Shop

    Data Parsing
    The online spare parts store Technomarin.ru on #Python3 . For the customer of this parser, I also wrote scripts for other online stores on the topic of goods for hunting and fishing: Moreman and Optic4u.
  • 31 USD

    Parking of Kyrgyz voters

    Data Parsing
    One of my major orders is the #parcing of Kyrgyz voters from the Kyrgyz CIC website (https://shailoo.srs.kg/view/public/tik_list_public.xhtml): FIO, electoral district, electoral district. About 3 million records. The customer had to provide the data with one csv file as quickly as possible, so it had to run copies of the script, which was already multi-touch, on different hosts, and then combine the data. The case was complicated by the fact that the CIC server was constantly “falling” (for data updates and technical work). For this, the same customer later on another task was written by the #parser of the inner town districts of OKATO.
  • 8 USD

    The Moreman Online Shop

    Data Parsing
    Multi-flow #parser Moreman online store of marine goods on #Python3 (an average of 11,500 goods). For the customer of this parser, I also wrote scripts for other online stores on the topic of goods for hunting and fishing: Optic4u and Technomarin (for 800 r. for each).
  • 8 USD

    Internet shop Optic4u

    Data Parsing
    Optic4u.ru online shop for hunting on #Python3 . For the customer of this parser, I also wrote scripts for other online stores on the topic of goods for hunting and fishing: Moreman and Technomarin.

Reviews and compliments on completed projects 5

7 January 2019 31 USD
Интерфейс

Quality
Professionalism
Cost
Contactability
Deadlines

Безумно благодарен за сотрудничество. Вы действительно мастер своего дело. Все выполнено качественно и все поправки учтены.

28 December 2018 5 USD
Программирование Python 3.7 Задачи

Quality
Professionalism
Cost
Contactability
Deadlines

Все отлично! Выполнено быстро и качественно. Советую с данным человеком работать!

Profile deleted | Personal | Response review

28 December 2018 4 USD
Задание прог.

Quality
Professionalism
Cost
Contactability
Deadlines

Все супер. Задачка зашла. думаю еще сработаемся! Спасибо большое

Profile deleted | Personal | Response review

27 December 2018 4 USD
Задание прог.

Quality
Professionalism
Cost
Contactability
Deadlines

зашло. все отлично. можно работать, думаю будем дальше)

Profile deleted | Personal | Response review

11 December 2018 31 USD
Writing 3 Parsers on Pitton

Quality
Professionalism
Cost
Contactability
Deadlines

A great performer! Always in contact, the work is done! I recommend !

Activity

  Latest proposals 10
Алгоритмы и структуры данных на python Personal project
30 USD
Парсинг номеров Родителей Personal project
5 USD
Небольшие доработки. Django + Angular 6(не обязательно) + Postgresql
3 USD
Parking of Olh
10 USD
Парсинг контактов с сайта
5 USD
Интерфейс Personal project
31 USD
Программирование Python 3.7 Задачи Personal project
5 USD
Задание прог. Personal project
4 USD
Задание прог. Personal project
4 USD
Parking of Olh
9 USD