py26: datetime.timedelta issue

[akaRem]

installed via pip,
executed via py26 in venv

$ python

Python 2.6.8 (unknown, Mar  9 2014, 22:16:00) 
[GCC 4.2.1 Compatible Apple LLVM 5.0 (clang-500.0.68)] on darwin
Type "help", "copyright", "credits" or "license" for more information.


$ prospector --version                                                                                                                                                                                                         
prospector 0.7

have an error

$ prospector

Traceback (most recent call last):                                                                                                                                                  
  File "/Users/iremizov/Py26/bin/prospector", line 9, in <module>
    load_entry_point('prospector==0.7', 'console_scripts', 'prospector')()
  File "/Users/iremizov/Py26/lib/python2.6/site-packages/prospector/run.py", line 312, in main
    prospector.execute()
  File "/Users/iremizov/Py26/lib/python2.6/site-packages/prospector/run.py", line 253, in execute
    summary['time_taken'] = '%0.2f' % delta.total_seconds()
AttributeError: 'datetime.timedelta' object has no attribute 'total_seconds'