reorder in python

Runtime-Environments.md

@@ -4,13 +4,13 @@ This page contains notes about using various runtime environments in ReCodEx as
 
 ## Python
 
+We use a wrapper script that translates exceptions to error codes. This script can be found in the [utils](https://github.com/ReCodEx/utils/blob/master/runners/py/runner.py) repository.
+
 Due to a [Python bug](http://bugs.python.org/issue10496), the interpreter 
 requires the `$HOME` variable to be set to something. Otherwise, it tries to 
 look up the UID used by Isolate in `/etc/passwd` and fails. Setting `HOME=/box` 
 seems to work.
 
-We use a wrapper script that translates exceptions to error codes. This script can be found in the [utils](https://github.com/ReCodEx/utils/blob/master/runners/py/runner.py) repository.
-
 ## Java
 
 By default, we use a script that looks for a class with a `main` method and executes it for running Java programs. There has to be only one class containing `main` method, otherwise error will be observed. The executed script is named `javarun.java` and can be found in the [utils](https://github.com/ReCodEx/utils/blob/master/runners/java/javarun.java) repository. In tested solutions we use its byte-compiled counterpart `javarun.class`, so be aware of name collisions.