- fix larray-project#234 : implemented support for np.__array_ufunc__

- merged npufuncs.py module into ufuncs.py

- updated setup.cfg config file to skip all functions derived from Numpy and for which copied doctests fail

doc/source/changes/version_0_32.rst.inc

@@ -49,7 +49,7 @@ New features
 Miscellaneous improvements
 ^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-* improved something.
+* made it possible to pass LArray objects to Numpy ufuncs directly (e.g. np.sqrt(ndtest(3)), closes :issue:`234`).
 
 
 Fixes

larray/__init__.py

@@ -12,15 +12,15 @@
 from larray.core.session import Session, local_arrays, global_arrays, arrays
 from larray.core.constants import nan, inf, pi, e, euler_gamma
 from larray.core.metadata import Metadata
-from larray.core.ufuncs import wrap_elementwise_array_func, maximum, minimum, where
-from larray.core.npufuncs import (sin, cos, tan, arcsin, arccos, arctan, hypot, arctan2, degrees,
-                                  radians, unwrap, sinh, cosh, tanh, arcsinh, arccosh, arctanh,
-                                  angle, real, imag, conj,
-                                  round, around, round_, rint, fix, floor, ceil, trunc,
-                                  exp, expm1, exp2, log, log10, log2, log1p, logaddexp, logaddexp2,
-                                  i0, sinc, signbit, copysign, frexp, ldexp,
-                                  convolve, clip, sqrt, absolute, fabs, sign, fmax, fmin, nan_to_num,
-                                  real_if_close, interp, isnan, isinf, inverse)
+from larray.core.ufuncs import (wrap_elementwise_array_func, maximum, minimum, where,
+                                sin, cos, tan, arcsin, arccos, arctan, hypot, arctan2, degrees,
+                                radians, unwrap, sinh, cosh, tanh, arcsinh, arccosh, arctanh,
+                                angle, real, imag, conj,
+                                round, around, round_, rint, fix, floor, ceil, trunc,
+                                exp, expm1, exp2, log, log10, log2, log1p, logaddexp, logaddexp2,
+                                i0, sinc, signbit, copysign, frexp, ldexp,
+                                convolve, clip, sqrt, absolute, fabs, sign, fmax, fmin, nan_to_num,
+                                real_if_close, interp, isnan, isinf, inverse)
 
 from larray.inout.misc import from_lists, from_string
 from larray.inout.pandas import from_frame, from_series

larray/core/array.py

@@ -57,6 +57,7 @@
 from larray.core.constants import nan
 from larray.core.metadata import Metadata
 from larray.core.expr import ExprNode
+from larray.core.ufuncs import SupportsNumpyUfuncs
 from larray.core.group import (Group, IGroup, LGroup, remove_nested_groups, _to_key, _to_keys,
                                _translate_sheet_name, _translate_group_key_hdf)
 from larray.core.axis import Axis, AxisReference, AxisCollection, X, _make_axis
@@ -700,7 +701,7 @@ def _handle_meta(meta, title):
     return Metadata(meta)
 
 
-class LArray(ABCLArray):
+class LArray(ABCLArray, SupportsNumpyUfuncs):
     r"""
     A LArray object represents a multidimensional, homogeneous array of fixed-size items with labeled axes.
 
@@ -5862,7 +5863,7 @@ def eq(self, other, rtol=0, atol=0, nans_equal=False):
             if not nans_equal:
                 return self == other
             else:
-                from larray.core.npufuncs import isnan
+                from larray.core.ufuncs import isnan
 
                 def general_isnan(a):
                     if np.issubclass_(a.dtype.type, np.inexact):
@@ -6625,7 +6626,7 @@ def clip(self, minval=None, maxval=None, out=None):
          a1   0   1   2
          a2   2   2   2
         """
-        from larray.core.npufuncs import clip
+        from larray.core.ufuncs import clip
         return clip(self, minval, maxval, out)
 
     @deprecate_kwarg('transpose', 'wide')