Added a new Python script and some changes in existing one (TheAlgorithms#1560)

* Python Program that fetches top trending news

* Python Program that fetches top trending news

* Revisions in Fetch BBC News

* psf/black Changes

* Python Program to send slack message to a channel

* Slack Message Revision Changes

Author: SKAUL05

web_programming/fetch_bbc_news.py

@@ -2,7 +2,6 @@
 
 import requests
 
-# Enter Your API Key in following URL
 _NEWS_API = "https://newsapi.org/v1/articles?source=bbc-news&sortBy=top&apiKey="
 
 
@@ -14,5 +13,5 @@ def fetch_bbc_news(bbc_news_api_key: str) -> None:
         print(f"{i}.) {article['title']}")
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     fetch_bbc_news(bbc_news_api_key="<Your BBC News API key goes here>")

web_programming/slack_message.py

@@ -0,0 +1,18 @@
+# Created by sarathkaul on 12/11/19
+
+import requests
+
+
+def send_slack_message(message_body: str, slack_url: str) -> None:
+    headers = {"Content-Type": "application/json"}
+    response = requests.post(slack_url, json={"text": message_body}, headers=headers)
+    if response.status_code != 200:
+        raise ValueError(
+            f"Request to slack returned an error {response.status_code}, "
+            f"the response is:\n{response.text}"
+        )
+
+
+if __name__ == "main":
+    # Set the slack url to the one provided by Slack when you create the webhook at https://my.slack.com/services/new/incoming-webhook/
+    send_slack_message("<YOUR MESSAGE BODY>", "<SLACK CHANNEL URL>")