>>> help(itertools.accumulate)
Help on class accumulate in module itertools:

class accumulate(builtins.object)
 |  accumulate(iterable, func=None, *, initial=None)
 |
 |  Return series of accumulated sums (or other binary function results).
 |
 |  Methods defined here:
 |
 |  __getattribute__(self, name, /)
 |      Return getattr(self, name).
 |
 |  __iter__(self, /)
 |      Implement iter(self).
 |
 |  __next__(self, /)
 |      Implement next(self).
 |
 |  ----------------------------------------------------------------------
 |  Static methods defined here:
 |
 |  __new__(*args, **kwargs)
 |      Create and return a new object.  See help(type) for accurate signature.