Currently, the default implementation of datetime.datetime.__repr__ (the default output string produced at the console/IPython) gives a rather cryptic output:

from datetime import datetime as D
D.fromtimestamp(1390953543.1) - D.fromtimestamp(1121871596)
# datetime.timedelta(3114, 28747, 100000)

For the uninitiated, it is not obvious that the numeric values here are `days`, `seconds` and `microsecond` respectively.

Would there be any pushback against changing this to:

# datetime.timedelta(days=3114, seconds=28747, microseconds=100000)

?