bz2.compress(data, compresslevel=9) Compress data. compresslevel, if given

os.sync() Force write of everything to disk. Availability: Unix.

bytearray.count(sub[, start[, end]]) Return the number of non-overlapping occurrences of subsequence sub in the range

numpy.fv(rate, nper, pmt, pv, when='end')

prefetch_related_objects(model_instances, *related_lookups) [source]

asyncio.as_completed(fs, *, loop=None, timeout=None) Return an iterator whose values, when waited for, are Future

doctest.debug(module, name, pm=False) Debug the doctests for an object. The module

TiffFile class skimage.external.tifffile.TiffFile(arg, name=None, offset=None, size=None, multifile=True, multifile_close=True)

Element.setAttribute(name, value) Set an attribute value from a string.

DataFrameGroupBy.rank(axis=0, method='average', numeric_only=None, na_option='keep', ascending=True, pct=False)