w.py

from datetime import datetime

class W(object):
    def __getattr__(self, attr):
        def meta(*args, **kwargs):
            def inner(value):
                return getattr(value, attr)(*args, **kwargs)
            return inner
        return meta
    
w = W()

dates = [datetime(2014, 1, 1), datetime(2014, 1, 2), datetime(2014, 1, 3)]

print map(w.isoformat(), dates)
print map(w.strftime('%b %d, %Y'), dates)