DataFrameGroupBy.cov(min_periods=None) Compute pairwise covariance of columns, excluding NA/null values

generic.itemsize length of one element in bytes

pandas.date_range(start=None, end=None, periods=None, freq='D', tz=None, normalize=False, name=None, closed=None, **kwargs)

classmethod(function) Return a class method for function. A class method receives the

compare_signal(other, context=None) This operation is identical to the compare() method, except that all NaNs signal

statsmodels.sandbox.regression.gmm.IVRegressionResults.centered_tss

IMAP4.debug Integer value to control debugging output. The initialize value is taken from the module variable Debug

element_options(elementname) Returns the list of elementname‘s options.

numpy.trim_zeros(filt, trim='fb')

Polynomials in NumPy can be created, manipulated, and even fitted using the