Trying to use \src\depot_tools\my_activity.py on Windows fails because python-dateutil package is not available (ERROR:root:python-deteutil package required).

Trying to install the package using pip provided with depot_tools version of python fails because of SSL errors.

C:\src\chromium\src>python \src\depot_tools\my_activity.py
ERROR:root:python-dateutil package required
C:\src\chromium\src>where python
C:\src\depot_tools\python.bat
C:\python_27_amd64\files\python.exe

C:\src\chromium\src>\src\depot_tools\win_tools-2_7_6_bin\python\bin\Scripts\pip.exe install python-dateutil
Downloading/unpacking python-dateutil
  Could not fetch URL https://pypi.python.org/simple/python-dateutil/: There was a problem confirming the ssl certificate: <urlopen error [Errno 1] _ssl.c:507: error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version>
  Will skip URL https://pypi.python.org/simple/python-dateutil/ when looking for download links for python-dateutil
  Could not fetch URL https://pypi.python.org/simple/: There was a problem confirming the ssl certificate: <urlopen error [Errno 1] _ssl.c:507: error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version>
  Will skip URL https://pypi.python.org/simple/ when looking for download links for python-dateutil
  Cannot fetch index base URL https://pypi.python.org/simple/
  Could not fetch URL https://pypi.python.org/simple/python-dateutil/: There was a problem confirming the ssl certificate: <urlopen error [Errno 1] _ssl.c:507: error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version>
  Will skip URL https://pypi.python.org/simple/python-dateutil/ when looking for download links for python-dateutil
  Could not find any downloads that satisfy the requirement python-dateutil
Cleaning up...
No distributions at all found for python-dateutil
Storing complete log in C:\Users\xxxxxxxx\pip\pip.log

C:\src\chromium\src>python -c "import ssl; print ssl.OPENSSL_VERSION"
OpenSSL 0.9.8y 5 Feb 2013