Reorganize example code

code/exercise-solutions/exercise-1.py

@@ -0,0 +1,21 @@
+import scrapy
+
+
+class QuotesSpider(scrapy.Spider):
+    name = "quotes"
+    allowed_domains = ["quotes.toscrape.com"]
+    start_urls = ["https://quotes.toscrape.com"]
+
+    def parse(self, response):
+        quotes = response.css(".quote")
+        for quote in quotes:
+            yield {
+                "quote": quote.css(".text::text").get(),
+                "author": quote.css(".author::text").get(),
+                "author_url": response.urljoin(quote.css("span a::attr(href)").get()),
+                "tags": quote.css(".tag *::text").getall(),
+            }
+
+        yield scrapy.Request(
+            response.urljoin(response.css(".next a::attr(href)").get())
+        )