MAINT: apply ruff/Pycodestyle rule F821

F821 Undefined name

I have left out *.pyi files and some special cases.

Author: DimitriPapadopoulos

numpy/_core/tests/test_ufunc.py

@@ -486,8 +486,8 @@ def test_signature_dtype_type(self):
         np.add(3, 4, signature=(float_dtype, float_dtype, None))
 
     @pytest.mark.parametrize("get_kwarg", [
-            lambda dt: dict(dtype=x),
-            lambda dt: dict(signature=(x, None, None))])
+            lambda dt: dict(dtype=dt),
+            lambda dt: dict(signature=(dt, None, None))])
     def test_signature_dtype_instances_allowed(self, get_kwarg):
         # We allow certain dtype instances when there is a clear singleton
         # and the given one is equivalent; mainly for backcompat.

numpy/_core/tests/test_umath.py

@@ -693,11 +693,11 @@ def test_floor_division_corner_cases(self, dtype):
         with suppress_warnings() as sup:
             sup.filter(RuntimeWarning, "invalid value encountered in floor_divide")
             div = np.floor_divide(fnan, fone)
-            assert(np.isnan(div)), "dt: %s, div: %s" % (dt, div)
+            assert(np.isnan(div)), "div: %s" % div
             div = np.floor_divide(fone, fnan)
-            assert(np.isnan(div)), "dt: %s, div: %s" % (dt, div)
+            assert(np.isnan(div)), "div: %s" % div
             div = np.floor_divide(fnan, fzer)
-            assert(np.isnan(div)), "dt: %s, div: %s" % (dt, div)
+            assert(np.isnan(div)), "div: %s" % div
         # verify 1.0//0.0 computations return inf
         with np.errstate(divide='ignore'):
             z = np.floor_divide(y, x)

numpy/f2py/_src_pyf.py

@@ -1,3 +1,4 @@
+import os
 import re
 
 # START OF CODE VENDORED FROM `numpy.distutils.from_template`

numpy/linalg/_linalg.py

@@ -26,7 +26,7 @@
     array, asarray, zeros, empty, empty_like, intc, single, double,
     csingle, cdouble, inexact, complexfloating, newaxis, all, inf, dot,
     add, multiply, sqrt, sum, isfinite, finfo, errstate, moveaxis, amin,
-    amax, prod, abs, atleast_2d, intp, asanyarray, object_, matmul,
+    amax, prod, abs, atleast_2d, intp, asanyarray, object_,
     swapaxes, divide, count_nonzero, isnan, sign, argsort, sort,
     reciprocal, overrides, diagonal as _core_diagonal, trace as _core_trace,
     cross as _core_cross, outer as _core_outer, tensordot as _core_tensordot,

numpy/linalg/lapack_lite/clapack_scrub.py

@@ -305,7 +305,7 @@ def scrubSource(source, nsteps=None, verbose=False):
     else:
         nsteps = None
 
-    source = scrub_source(source, nsteps, verbose=True)
+    source = scrubSource(source, nsteps, verbose=True)
 
     with open(outfilename, 'w') as writefo:
         writefo.write(source)

numpy/testing/overrides.py

@@ -44,7 +44,7 @@ def allows_array_ufunc_override(func):
     will work correctly for ufuncs defined outside of Numpy.
 
     """
-    return isinstance(func, np.ufunc)
+    return isinstance(func, _ufunc)
 
 
 def get_overridable_numpy_array_functions():