Добавил обработку 404 ошибок +поправил index page.

README.md

@@ -3,9 +3,20 @@
 DB: pythoncms
 Table: posts
 Format:
-
+```
 {
   "_id": "0123456789",
   "name": "Title",
   "text": "Hello, this is post"
 }
+```
+Index page:
+
+```
+{
+  "_id": "0123456789",
+  "name": "/",
+  "text": "Hello, this is index page"
+}
+
+```

main.py

@@ -1,5 +1,5 @@
 #!/usr/bin/python3
-from bottle import route, run, template, debug, request
+from bottle import abort, route, run, template, debug, request
 import pymongo
 
 mongoclient = pymongo.MongoClient('localhost', 27017)
@@ -12,7 +12,10 @@ def post(name):
     '''
     Get post
     '''
-    return posts.find_one({'name':name})['text']
+    try:
+        return posts.find_one({'name':name})['text']
+    except TypeError:
+        return abort(404, 'No such page')
 
 
 @route('/post/<name>', method='POST')
@@ -52,7 +55,10 @@ def all_posts():
 
 @route('/')
 def index():
-    return "Hello"
+    try:
+        return posts.find_one({'name':'/'})['text']
+    except TypeError:
+        return abort(404, 'No such page')
 
 
 if __name__ == '__main__':