Created
March 29, 2021 13:37
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Example scraper and scraper test solution
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| import requests | |
| from bs4 import BeautifulSoup | |
| BASE_URL = "https://codingnomads.github.io/recipes/" | |
| def get_page_content(url): | |
| """Gets the response from a HTTP call to the URL.""" | |
| page = requests.get(url) | |
| return page | |
| def get_html_content(url): | |
| """Gets the HTML from a page.""" | |
| html = get_page_content(url).text | |
| return html | |
| def make_soup(html): | |
| """Converts an HTML string to a BeautifulSoup object.""" | |
| soup = BeautifulSoup(html, "html.parser") | |
| return soup | |
| def get_recipe_links(soup): | |
| """Extracts the URLs of all links on a page, given a bs4 object.""" | |
| links = [link["href"] for link in soup.find_all("a")] | |
| return links | |
| def get_author(soup): | |
| """Extracts the name of the author of a recipe.""" | |
| author = soup.find("p", class_="author").text.strip("by ") | |
| return author | |
| def get_recipe(soup): | |
| """Extracts the recipe text from a bs4 object.""" | |
| recipe = soup.find("div", class_="md").text | |
| return recipe | |
| if __name__ == "__main__": | |
| index_html = get_html_content(BASE_URL) | |
| index_soup = make_soup(index_html) | |
| recipe_links = get_recipe_links(index_soup) | |
| for r_link in recipe_links: | |
| URL = f"{BASE_URL}/{r_link}" | |
| soup = make_soup(get_html_content(URL)) | |
| author = get_author(soup) | |
| recipe = get_recipe(soup) | |
| print(f"({author})\t[{recipe}]\n\n\n") |
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| import unittest | |
| import rescrape | |
| class TestRescrape(unittest.TestCase): | |
| def setUp(self): | |
| self.BASE_URL = "https://codingnomads.github.io/recipes/" | |
| self.url = f"{self.BASE_URL}recipes/11-making-my-own-baguet.html" | |
| def test_get_valid_html_response(self): | |
| index_page = rescrape.get_page_content(self.BASE_URL) | |
| page = rescrape.get_page_content(self.url) | |
| self.assertEqual(index_page.status_code, 200) | |
| self.assertEqual(page.status_code, 200) | |
| def test_get_html_content_returns_html_string(self): | |
| index_html = rescrape.get_html_content(self.BASE_URL) | |
| html = rescrape.get_html_content(self.url) | |
| self.assertIn("<!DOCTYPE html>", index_html) | |
| self.assertIn("<!DOCTYPE html>", html) | |
| def test_make_soup_makes_soup(self): | |
| html = rescrape.get_html_content(self.url) | |
| soup = rescrape.make_soup(html) | |
| self.assertEqual("<class 'bs4.BeautifulSoup'>", str(type(soup))) | |
| def test_get_recipe_links_gets_recipe_links(self): | |
| index_html = rescrape.get_html_content(self.BASE_URL) | |
| index_soup = rescrape.make_soup(index_html) | |
| self.assertGreater(len(rescrape.get_recipe_links(index_soup)), 0) | |
| def test_get_author_finds_author(self): | |
| html = rescrape.get_html_content(self.url) | |
| soup = rescrape.make_soup(html) | |
| author = rescrape.get_author(soup) | |
| self.assertNotEqual(len(author), 0) | |
| self.assertEqual("Jadafaa", author) | |
| def test_get_recipe_gets_recipe_text(self): | |
| html = rescrape.get_html_content(self.url) | |
| soup = rescrape.make_soup(html) | |
| recipe = rescrape.get_recipe(soup) | |
| self.assertIsInstance(recipe, str) | |
| self.assertGreater(len(recipe), 0) | |
| if __name__ == "__main__": | |
| unittest.main() |
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