the parser has been added to the branch

.gitignore

@@ -127,3 +127,6 @@ dmypy.json
 
 # Pyre type checker
 .pyre/
+
+# Idea
+.idea/

pars.py

@@ -0,0 +1,98 @@
+import requests
+from bs4 import BeautifulSoup
+
+KEYWORDS = ('Python', 'JavaScript', 'Java')  # Можно вынести в конфиг, категории книг!
+
+
+def get_html(url, params=None):
+    try:
+        result = requests.get(url, params=params)
+        result.raise_for_status()
+        return result.text
+    except(requests.RequestException, ValueError):
+        print('Сетевая ошибка')
+        return
+
+
+def get_links_page(html):
+    """Парсит ссылки на страницы книг с сайта Piter.com
+    :param html:
+    :return: Список ссылок с текущей страницы"""
+    links = []
+    soup = BeautifulSoup(html, 'html.parser')
+    all_books = soup.find('div', class_='products-list').find_all('a')
+    for link in all_books:
+        href = link['href']
+        if 'javascript:void(0);' not in href:
+            links.append(href)
+    return links
+
+
+def get_all_links_books(category):
+    url = 'https://www.piter.com/collection/all'
+    page = 1
+    books_links = []
+    while True:
+        params = {
+            'q': category, 'page': page, 'page_size': 100
+        }
+        result = get_html(url, params)
+        if result:
+            links = get_links_page(result)
+            if links:
+                books_links.extend(links)
+                page += 1
+            else:  # Если на странице нет ссылок на книги
+                break
+    return books_links
+
+
+if __name__ == '__main__':
+    books = {_: {} for _ in KEYWORDS}
+    for category in KEYWORDS:
+        links = get_all_links_books(category)
+        for number, link in enumerate(links, start=1):
+            html = get_html('https://www.piter.com' + link)
+            soup = BeautifulSoup(html, 'html.parser')
+
+            title = soup.select_one('div[class*="product-info"] > h1').text
+
+            authors_list = []
+            authors_html = soup.find('p', class_='author').find_all('span')
+            for author in authors_html:
+                authors_list.append(author.text)
+
+            year = soup.find('span', string='Год:').find_next_sibling().text.strip()
+
+            publisher = 'Питер'
+
+            price = soup.find('div', string='Цена:')
+            if price:
+                price = price.find_next_sibling().text.strip()
+                price = price.split()[0]
+
+            description = soup.select_one('#tab-1').text
+
+            image_link = soup.find('a', class_='img').find('img')['src']
+
+            isbn = soup.find('span', string='ISBN:').find_next_sibling().text.strip()
+
+            book_info = {
+                'title': title,
+                'authors': authors_list,
+                'year': year,
+                'price': price,
+                'description': description,
+                'image': image_link,
+                'isbn': isbn
+            }
+            books[category][number] = book_info
+
+    piter_books = {'Питер': books}
+
+    r = requests.post(
+        'http://127.0.0.1:5000/get-books/',
+        json=piter_books,
+        headers={'Authorization': 'test'},  # TODO: Вынести это в config файл (секретный ключ)
+    )
+    print(r.json())