unable to run test

after installing according to Readme, I tried the test as shown in the wiki (obviously updating my username ;) ):

```
# sudo -u zabbix ./zbxtg.py "@username" test test
Traceback (most recent call last):
File "./zbxtg.py", line 9, in
import requests
File "/usr/lib/python2.6/site-packages/requests/__init__.py", line 43, in
import urllib3
File "/usr/lib/python2.6/site-packages/urllib3/__init__.py", line 8, in
from .connectionpool import (
File "/usr/lib/python2.6/site-packages/urllib3/connectionpool.py", line 92
_blocking_errnos = {errno.EAGAIN, errno.EWOULDBLOCK}
^
SyntaxError: invalid syntax
```

```
# python --version
Python 2.6.6
# pip --version
pip 7.1.0 from /usr/lib/python2.6/site-packages (python 2.6)
```