Bump Python support to 3.4 and up

README.md

@@ -53,7 +53,7 @@ for administration of the Hub and its users.
 
 A Linux/Unix based system with the following:
 
-- [Python](https://www.python.org/downloads/) 3.3 or greater
+- [Python](https://www.python.org/downloads/) 3.4 or greater
 - [nodejs/npm](https://www.npmjs.com/) Install a recent version of
   [nodejs/npm](https://docs.npmjs.com/getting-started/installing-node)
   For example, install it on Linux (Debian/Ubuntu) using:

docs/source/changelog.md

@@ -7,6 +7,16 @@ command line for details.
 
 ## [Unreleased] 0.8
 
+#### Added
+
+#### Changed
+
+#### Fixed
+
+#### Removed
+
+- End support for Python 3.3 
+
 ## 0.7
 
 ### [0.7.2] - 2017-01-09

setup.py

@@ -15,8 +15,8 @@ import shutil
 import sys
 
 v = sys.version_info
-if v[:2] < (3,3):
-    error = "ERROR: JupyterHub requires Python version 3.3 or above."
+if v[:2] < (3,4):
+    error = "ERROR: JupyterHub requires Python version 3.4 or above."
     print(error, file=sys.stderr)
     sys.exit(1)