Create Requests.md

Author: TheCakesALie

Requests.md

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+# Python3 Requests Module Examples
+This file contains examples for different actions using the Requests III module. All examples are Python3.
+
+## https://3.python-requests.org/user/quickstart
+
+### Download Images
+```python3
+r = requests.get('https://imgs.xkcd.com/comics/python.png')
+
+with open('img.jpg', 'wb') as f:
+  for chunk in r.iter_content(chunk_size=128):
+    f.write(chunk)
+```
+
+### Save Responses in JSON Dictionary
+```python3
+payload = {'username': 'corey', 'password': 'testing'}
+r = requests.post('https://httpbin.org/post', data=payload)
+
+r_dict = r.json() #Saves JSON response as a dictionary
+
+print(r_dict['form']) #Retrieve particular value
+```
+
+### Timeout in Seconds - Should be used for production code
+```python3
+requests.get('https://github.com/', timeout=0.001)
+```
+
+### Errors and Exceptions
+
+In the event of a network problem (e.g. DNS failure, refused connection, etc), Requests will raise a **```ConnectionError```** exception.
+**```Response.raise_for_status()```** will raise an **```HTTPError```** if the HTTP request returned an unsuccessful status code.
+If a request times out, a **```Timeout```** exception is raised.
+If a request exceeds the configured number of maximum redirections, a **```TooManyRedirects```** exception is raised.
+
+### Web Scraper with Request and BeautifulSoup4
+```python3
+from bs4 import BeautifulSoup
+import requests
+import csv
+
+source = requests.get('http://coreyms.com').text
+
+soup = BeautifulSoup(source, 'lxml')
+
+csv_file = open('cms_scrape.csv', 'w')
+
+csv_writer = csv.writer(csv_file)
+csv_writer.writerow(['headline', 'summary', 'video_link'])
+
+for article in soup.find_all('article'):
+    headline = article.h2.a.text
+    print(headline)
+
+    summary = article.find('div', class_='entry-content').p.text
+    print(summary)
+
+    try:
+        vid_src = article.find('iframe', class_='youtube-player')['src']
+
+        vid_id = vid_src.split('/')[4]
+        vid_id = vid_id.split('?')[0]
+
+        yt_link = f'https://youtube.com/watch?v={vid_id}'
+    except Exception as e:
+        yt_link = None
+
+    print(yt_link)
+
+    print()
+
+    csv_writer.writerow([headline, summary, yt_link])
+
+csv_file.close()
+```