Scraping prescription drug prices from Rx site using the prescription drug name and zipcode (TheAlgorithms#5967)

* add wellrx scraping

* write test fix docs

* fix resolve issues

* black format. fix returns

* type check fix for union

* black formatted

* Change requests after code review

* add precommit changes

* flake errors

Author: saptarshi1996

web_programming/fetch_well_rx_price.py

@@ -0,0 +1,102 @@
+"""
+
+Scrape the price and pharmacy name for a prescription drug from rx site
+after providing the drug name and zipcode.
+
+"""
+
+from typing import Union
+from urllib.error import HTTPError
+
+from bs4 import BeautifulSoup
+from requests import exceptions, get
+
+BASE_URL = "https://www.wellrx.com/prescriptions/{0}/{1}/?freshSearch=true"
+
+
+def fetch_pharmacy_and_price_list(drug_name: str, zip_code: str) -> Union[list, None]:
+    """[summary]
+
+    This function will take input of drug name and zipcode,
+    then request to the BASE_URL site.
+    Get the page data and scrape it to the generate the
+    list of lowest prices for the prescription drug.
+
+    Args:
+        drug_name (str): [Drug name]
+        zip_code(str): [Zip code]
+
+    Returns:
+        list: [List of pharmacy name and price]
+
+    >>> fetch_pharmacy_and_price_list(None, None)
+
+    >>> fetch_pharmacy_and_price_list(None, 30303)
+
+    >>> fetch_pharmacy_and_price_list("eliquis", None)
+
+    """
+
+    try:
+
+        # Has user provided both inputs?
+        if not drug_name or not zip_code:
+            return None
+
+        request_url = BASE_URL.format(drug_name, zip_code)
+        response = get(request_url)
+
+        # Is the response ok?
+        response.raise_for_status()
+
+        # Scrape the data using bs4
+        soup = BeautifulSoup(response.text, "html.parser")
+
+        # This list will store the name and price.
+        pharmacy_price_list = []
+
+        # Fetch all the grids that contains the items.
+        grid_list = soup.find_all("div", {"class": "grid-x pharmCard"})
+        if grid_list and len(grid_list) > 0:
+            for grid in grid_list:
+
+                # Get the pharmacy price.
+                pharmacy_name = grid.find("p", {"class": "list-title"}).text
+
+                # Get price of the drug.
+                price = grid.find("span", {"p", "price price-large"}).text
+
+                pharmacy_price_list.append(
+                    {
+                        "pharmacy_name": pharmacy_name,
+                        "price": price,
+                    }
+                )
+
+        return pharmacy_price_list
+
+    except (HTTPError, exceptions.RequestException, ValueError):
+        return None
+
+
+if __name__ == "__main__":
+
+    # Enter a drug name and a zip code
+    drug_name = input("Enter drug name: ").strip()
+    zip_code = input("Enter zip code: ").strip()
+
+    pharmacy_price_list: Union[list, None] = fetch_pharmacy_and_price_list(
+        drug_name, zip_code
+    )
+
+    if pharmacy_price_list:
+
+        print(f"\nSearch results for {drug_name} at location {zip_code}:")
+        for pharmacy_price in pharmacy_price_list:
+
+            name = pharmacy_price["pharmacy_name"]
+            price = pharmacy_price["price"]
+
+            print(f"Pharmacy: {name} Price: {price}")
+    else:
+        print(f"No results found for {drug_name}")