dtype ctor allows "align" kwargs even when unapplicable #8158
Description
The doc for the np.dtype ctor documents its second arg as
align : bool, optional
Add padding to the fields to match what a C compiler would output for a similar C-struct.
Can be True only if obj is a dictionary or a comma-separated string. If a struct dtype is
being created, this also sets a sticky alignment flag isalignedstruct.
but in fact:
In [1]: np.dtype(float, 3)
Out[1]: dtype('float64')
i.e. align is ignored when not applicable. Error'ing in such a case would help catching typos, as the user more likely intended to write
In [2]: np.dtype((float, 3))
Out[2]: dtype(('<f8', (3,)))