Merge pull request #1067 from vkb20/main

Crypto price checker

Author: prathimacode-hub

WebScrapingScripts/crypto_price_checker/.github/pull_request_template.md

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+## Related Issue 
+
+- Using python script to fetch the top 100 cryptocurrencies from https://www.cointracker.io/ and then displaying cryptocurrency name and price.
+
+- [x] Hacktoberfest2021 Participant 
+- [x] Contributor
+
+Closes: #957
+
+### Describe the changes you've made
+
+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.
+
+## Type of change
+
+What sort of change have you made:
+<!--
+Example how to mark a checkbox:-
+- [x] My code follows the code style of this project.
+-->
+- [ ] Bug fix (non-breaking change which fixes an issue)
+- [x] New feature (non-breaking change which adds functionality)
+- [ ] Code style update (formatting, local variables)
+- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
+- [ ] This change requires a documentation update
+
+## How Has This Been Tested?
+
+I ran the script in the command prompt
+
+## Checklist:
+<!--
+Example how to mark a checkbox:-
+- [x] My code follows the code style of this project.
+-->
+- [x] My code follows the guidelines of this project.
+- [x] I have performed a self-review of my own code.
+- [x] I have commented my code, particularly whereever it was hard to understand.
+- [x] I have made corresponding changes to the documentation.
+- [x] My changes generate no new warnings.
+- [x] I have added tests that prove my fix is effective or that my feature works.
+- [x] Any dependent changes have been merged and published in downstream modules.
+
+## Screenshots
+![crypto_output_1](https://user-images.githubusercontent.com/88720381/139568849-d6de7888-4c5b-4b54-b708-6f4ae52b71cf.png)
+
+![crypto_output_2](https://user-images.githubusercontent.com/88720381/139568851-ed73bd55-fce9-43eb-9c52-d72806347d58.png)

WebScrapingScripts/crypto_price_checker/README.md

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+## Crypto Price Checker
+
+## Aim
+
+To fetch live top-100 cryptocurrency prices scraped from cointracker.io
+
+## Purpose
+
+Instead of users manually looking for live prices they can run the script easily to get the prices of cryptocurrencies.
+
+## Short description of package/script
+
+- The script navigates to website "https://www.cointracker.io/price" and then finds out the top 100 cryptocurrencies on that
+  webpage and then prints the price of all the cryptocurrencies in that webpage.
+- Libraries imported : requests, bs4 (beautiful soup).
+
+
+## Workflow of the Project
+
+I am getting the data from website "https://www.cointracker.io/price" and in this site there are tags with class name 
+"d-flex no-underline" and for all 100 cryptocurrencies I am finding this class and storing the "price/<cryptocurrency>" in the list 
+and then looping through the list and then navigating to website "https://www.cointracker.io/" + "price/<cryptocurrency>". Then I am
+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 
+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.
+
+
+## Setup instructions
+
+Just press "run" on IDLE or write "python crypto_price_checker.py" on command prompt.
+
+
+## Detailed explanation of script, if needed
+
+Explained above
+
+
+## Compilation Steps
+
+Explained above
+
+## Author(s)
+
+Varun Kumar
+
+
+## Disclaimers, if any
+
+Use this section to mention if any particular disclaimer is required

WebScrapingScripts/crypto_price_checker/crypto_price_checker.py

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+import requests
+import bs4
+
+url = "https://www.cointracker.io/price"
+req = requests.get(url)
+scrap = bs4.BeautifulSoup(req.text, 'html.parser')
+
+#getting list of individual sites to get price data
+individual_sites = [tag['href'] for tag in scrap.find_all('a', {'class':"d-flex no-underline"})]
+
+for i in range(len(individual_sites)):
+	#appending the string for each "i" to "https://www.cointracker.io".
+	url2 = "https://www.cointracker.io" + individual_sites[i]
+	req2 = requests.get(url2)
+	scrap2 = bs4.BeautifulSoup(req2.text, 'html.parser')
+
+	#getting the cryptocurreny name from the string
+	crypto_name = individual_sites[i][7:]
+
+	#getting the data where the price is present and converting it to string
+	findClass = scrap2.find('div', {'class':'my-auto h4'})
+	findClassStr = str(findClass)
+	
+	#finding index from which price of cryptocurrency starts
+	idx = findClassStr.find("data-price-container-symbol=")
+	idx = findClassStr.find(">", idx, len(findClassStr))
+	idx = idx+1
+	price_str = ""
+
+	#looping till I get the complete price as a string
+	while(findClassStr[idx]!="<"):
+		price_str = price_str + findClassStr[idx]
+		idx = idx+1
+	print("crptocurrency : " + crypto_name + " and 1 " + crypto_name + " = " + price_str)
+	
+

WebScrapingScripts/crypto_price_checker/images/crypto_output_1.png

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+Libraries used : 
+1) requests
+2) Beautiful Soup