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Commit d660980

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Merge pull request #1067 from vkb20/main
Crypto price checker
2 parents 27a4c96 + 0a387c7 commit d660980

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## Related Issue
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- Using python script to fetch the top 100 cryptocurrencies from https://www.cointracker.io/ and then displaying cryptocurrency name and price.
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- [x] Hacktoberfest2021 Participant
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- [x] Contributor
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Closes: #957
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### Describe the changes you've made
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I did all the tasks from scratch. Created the crypto_price_checker.py file for script. Created README.md file for explaining the project. Added relevant screenshots and added requirement.txt file.
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## Type of change
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What sort of change have you made:
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<!--
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Example how to mark a checkbox:-
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- [x] My code follows the code style of this project.
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-->
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- [ ] Bug fix (non-breaking change which fixes an issue)
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- [x] New feature (non-breaking change which adds functionality)
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- [ ] Code style update (formatting, local variables)
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- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
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- [ ] This change requires a documentation update
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## How Has This Been Tested?
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I ran the script in the command prompt
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## Checklist:
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<!--
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Example how to mark a checkbox:-
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- [x] My code follows the code style of this project.
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-->
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- [x] My code follows the guidelines of this project.
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- [x] I have performed a self-review of my own code.
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- [x] I have commented my code, particularly whereever it was hard to understand.
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- [x] I have made corresponding changes to the documentation.
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- [x] My changes generate no new warnings.
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- [x] I have added tests that prove my fix is effective or that my feature works.
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- [x] Any dependent changes have been merged and published in downstream modules.
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## Screenshots
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![crypto_output_1](https://user-images.githubusercontent.com/88720381/139568849-d6de7888-4c5b-4b54-b708-6f4ae52b71cf.png)
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![crypto_output_2](https://user-images.githubusercontent.com/88720381/139568851-ed73bd55-fce9-43eb-9c52-d72806347d58.png)
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## Crypto Price Checker
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## Aim
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To fetch live top-100 cryptocurrency prices scraped from cointracker.io
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## Purpose
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Instead of users manually looking for live prices they can run the script easily to get the prices of cryptocurrencies.
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## Short description of package/script
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- The script navigates to website "https://www.cointracker.io/price" and then finds out the top 100 cryptocurrencies on that
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webpage and then prints the price of all the cryptocurrencies in that webpage.
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- Libraries imported : requests, bs4 (beautiful soup).
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## Workflow of the Project
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I am getting the data from website "https://www.cointracker.io/price" and in this site there are tags with class name
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"d-flex no-underline" and for all 100 cryptocurrencies I am finding this class and storing the "price/<cryptocurrency>" in the list
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and then looping through the list and then navigating to website "https://www.cointracker.io/" + "price/<cryptocurrency>". Then I am
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finding the div tag with class name "my-auto h4" and then converting the data received to string. Then I am finding the first index
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of price string and looping till the end of price string. Then for each cryptocurrency I am printing it's name and it's price.
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## Setup instructions
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Just press "run" on IDLE or write "python crypto_price_checker.py" on command prompt.
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## Detailed explanation of script, if needed
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Explained above
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## Compilation Steps
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Explained above
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## Author(s)
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Varun Kumar
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## Disclaimers, if any
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Use this section to mention if any particular disclaimer is required
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import requests
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import bs4
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url = "https://www.cointracker.io/price"
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req = requests.get(url)
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scrap = bs4.BeautifulSoup(req.text, 'html.parser')
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#getting list of individual sites to get price data
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individual_sites = [tag['href'] for tag in scrap.find_all('a', {'class':"d-flex no-underline"})]
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for i in range(len(individual_sites)):
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#appending the string for each "i" to "https://www.cointracker.io".
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url2 = "https://www.cointracker.io" + individual_sites[i]
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req2 = requests.get(url2)
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scrap2 = bs4.BeautifulSoup(req2.text, 'html.parser')
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#getting the cryptocurreny name from the string
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crypto_name = individual_sites[i][7:]
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#getting the data where the price is present and converting it to string
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findClass = scrap2.find('div', {'class':'my-auto h4'})
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findClassStr = str(findClass)
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#finding index from which price of cryptocurrency starts
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idx = findClassStr.find("data-price-container-symbol=")
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idx = findClassStr.find(">", idx, len(findClassStr))
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idx = idx+1
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price_str = ""
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#looping till I get the complete price as a string
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while(findClassStr[idx]!="<"):
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price_str = price_str + findClassStr[idx]
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idx = idx+1
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print("crptocurrency : " + crypto_name + " and 1 " + crypto_name + " = " + price_str)
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Libraries used :
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1) requests
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2) Beautiful Soup

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