DEV: cleanup imports and some assignments (from LGTM)

15 files changed, 17 insertions, 34 deletions

diff --git a/numpy/compat/py3k.py b/numpy/compat/py3k.py
index 141a21fed..c9ed9d52c 100644
--- a/numpy/compat/py3k.py
+++ b/numpy/compat/py3k.py
@@ -11,6 +11,7 @@ __all__ = ['bytes', 'asbytes', 'isfileobj', 'getexception', 'strchar',
            'pickle', 'contextlib_nullcontext', 'os_fspath', 'os_PathLike']
 
 import sys
+import os
 try:
     from pathlib import Path, PurePath
 except ImportError:
@@ -173,7 +174,6 @@ else:
 
         """
         import imp
-        import os
         if info is None:
             path = os.path.dirname(fn)
             fo, fn, info = imp.find_module(name, [path])
@@ -195,7 +195,6 @@ else:
 
 # Backport os.fs_path, os.PathLike, and PurePath.__fspath__
 if sys.version_info[:2] >= (3, 6):
-    import os
     os_fspath = os.fspath
     os_PathLike = os.PathLike
 else:
diff --git a/numpy/core/_exceptions.py b/numpy/core/_exceptions.py
index 5e0105beb..227c08cd6 100644
--- a/numpy/core/_exceptions.py
+++ b/numpy/core/_exceptions.py
@@ -5,8 +5,6 @@ in python where it's easier.
 By putting the formatting in `__str__`, we also avoid paying the cost for
 users who silence the exceptions.
 """
-from numpy.core.overrides import set_module
-
 
 def _unpack_tuple(tup):
     if len(tup) == 1:
diff --git a/numpy/core/overrides.py b/numpy/core/overrides.py
index 46097f39c..9f91adc83 100644
--- a/numpy/core/overrides.py
+++ b/numpy/core/overrides.py
@@ -1,7 +1,6 @@
 """Implementation of __array_function__ overrides from NEP-18."""
 import collections
 import functools
-import os
 
 from numpy.core._multiarray_umath import (
     add_docstring, implement_array_function, _get_implementing_args)
diff --git a/numpy/core/shape_base.py b/numpy/core/shape_base.py
index e43519689..0eac772e8 100644
--- a/numpy/core/shape_base.py
+++ b/numpy/core/shape_base.py
@@ -5,7 +5,6 @@ __all__ = ['atleast_1d', 'atleast_2d', 'atleast_3d', 'block', 'hstack',
 
 import functools
 import operator
-import types
 import warnings
 
 from . import numeric as _nx
diff --git a/numpy/ctypeslib.py b/numpy/ctypeslib.py
index 02c3bd211..1967a85b6 100644
--- a/numpy/ctypeslib.py
+++ b/numpy/ctypeslib.py
@@ -51,7 +51,7 @@ Then, we're ready to call ``foo_func``:
 """
 from __future__ import division, absolute_import, print_function
 
-__all__ = ['load_library', 'ndpointer', 'test', 'ctypes_load_library',
+__all__ = ['load_library', 'ndpointer', 'ctypes_load_library',
            'c_intp', 'as_ctypes', 'as_array']
 
 import os
diff --git a/numpy/distutils/_shell_utils.py b/numpy/distutils/_shell_utils.py
index 5ef874900..82abd5f4e 100644
--- a/numpy/distutils/_shell_utils.py
+++ b/numpy/distutils/_shell_utils.py
@@ -24,12 +24,12 @@ class CommandLineParser:
     @staticmethod
     def join(argv):
         """ Join a list of arguments into a command line string """
-        raise NotImplemented
+        raise NotImplementedError
 
     @staticmethod
     def split(cmd):
         """ Split a command line string into a list of arguments """
-        raise NotImplemented
+        raise NotImplementedError
 
 
 class WindowsParser:
diff --git a/numpy/distutils/command/build_ext.py b/numpy/distutils/command/build_ext.py
index ab9d585a5..ef54fb25e 100644
--- a/numpy/distutils/command/build_ext.py
+++ b/numpy/distutils/command/build_ext.py
@@ -281,8 +281,8 @@ class build_ext (old_build_ext):
                 runtime_lib = os.path.join(self.extra_dll_dir, fn)
                 copy_file(runtime_lib, shared_lib_dir)
 
-    def swig_sources(self, sources):
-        # Do nothing. Swig sources have beed handled in build_src command.
+    def swig_sources(self, sources, extensions=None):
+        # Do nothing. Swig sources have been handled in build_src command.
         return sources
 
     def build_extension(self, ext):
diff --git a/numpy/distutils/system_info.py b/numpy/distutils/system_info.py
index e723b85b8..4d923ad26 100644
--- a/numpy/distutils/system_info.py
+++ b/numpy/distutils/system_info.py
@@ -906,7 +906,6 @@ class fftw_info(system_info):
                    == len(ver_param['includes']):
                     dict_append(info, include_dirs=[d])
                     flag = 1
-                    incl_dirs = [d]
                     break
             if flag:
                 dict_append(info, define_macros=ver_param['macros'])
@@ -1058,9 +1057,9 @@ class mkl_info(system_info):
         for d in paths:
             dirs = glob(os.path.join(d, 'mkl', '*'))
             dirs += glob(os.path.join(d, 'mkl*'))
-            for d in dirs:
-                if os.path.isdir(os.path.join(d, 'lib')):
-                    return d
+            for sub_dir in dirs:
+                if os.path.isdir(os.path.join(sub_dir, 'lib')):
+                    return sub_dir
         return None
 
     def __init__(self):
diff --git a/numpy/lib/function_base.py b/numpy/lib/function_base.py
index b61a64b8e..fb40ef927 100644
--- a/numpy/lib/function_base.py
+++ b/numpy/lib/function_base.py
@@ -31,7 +31,6 @@ from numpy.core.overrides import set_module
 from numpy.core import overrides
 from numpy.core.function_base import add_newdoc
 from numpy.lib.twodim_base import diag
-from .utils import deprecate
 from numpy.core.multiarray import (
     _insert, add_docstring, bincount, normalize_axis_index, _monotonicity,
     interp as compiled_interp, interp_complex as compiled_interp_complex
diff --git a/numpy/lib/npyio.py b/numpy/lib/npyio.py
index 1e43fdb34..d702859fa 100644
--- a/numpy/lib/npyio.py
+++ b/numpy/lib/npyio.py
@@ -23,8 +23,7 @@ from ._iotools import (
     )
 
 from numpy.compat import (
-    asbytes, asstr, asunicode, asbytes_nested, bytes, basestring, unicode,
-    os_fspath, os_PathLike, pickle
+    asbytes, asstr, asunicode, bytes, basestring, os_fspath, os_PathLike, pickle
     )
 
 if sys.version_info[0] >= 3:
@@ -1123,7 +1122,6 @@ def loadtxt(fname, dtype=float, comments='#', delimiter=None,
                     if type(x) is bytes:
                         return conv(x)
                     return conv(x.encode("latin1"))
-                import functools
                 converters[i] = functools.partial(tobytes_first, conv=conv)
             else:
                 converters[i] = conv
@@ -1974,7 +1972,6 @@ def genfromtxt(fname, dtype=float, comments='#', delimiter=None,
                 if type(x) is bytes:
                     return conv(x)
                 return conv(x.encode("latin1"))
-            import functools
             user_conv = functools.partial(tobytes_first, conv=conv)
         else:
             user_conv = conv
diff --git a/numpy/ma/core.py b/numpy/ma/core.py
index b8fd76860..1f5bc2a51 100644
--- a/numpy/ma/core.py
+++ b/numpy/ma/core.py
@@ -44,7 +44,6 @@ from numpy.compat import (
     getargspec, formatargspec, long, basestring, unicode, bytes
     )
 from numpy import expand_dims
-from numpy.core.multiarray import normalize_axis_index
 from numpy.core.numeric import normalize_axis_tuple
 from numpy.core._internal import recursive
 from numpy.compat import pickle
@@ -1198,7 +1197,6 @@ exp = _MaskedUnaryOperation(umath.exp)
 conjugate = _MaskedUnaryOperation(umath.conjugate)
 sin = _MaskedUnaryOperation(umath.sin)
 cos = _MaskedUnaryOperation(umath.cos)
-tan = _MaskedUnaryOperation(umath.tan)
 arctan = _MaskedUnaryOperation(umath.arctan)
 arcsinh = _MaskedUnaryOperation(umath.arcsinh)
 sinh = _MaskedUnaryOperation(umath.sinh)
diff --git a/numpy/ma/extras.py b/numpy/ma/extras.py
index 2e3b84e1c..a51d83578 100644
--- a/numpy/ma/extras.py
+++ b/numpy/ma/extras.py
@@ -390,7 +390,6 @@ def apply_along_axis(func1d, axis, arr, *args, **kwargs):
     i[axis] = slice(None, None)
     outshape = np.asarray(arr.shape).take(indlist)
     i.put(indlist, ind)
-    j = i.copy()
     res = func1d(arr[tuple(i.tolist())], *args, **kwargs)
     #  if res is a number, then we have a smaller output array
     asscalar = np.isscalar(res)
diff --git a/numpy/ma/mrecords.py b/numpy/ma/mrecords.py
index 6779be746..9bcb3947d 100644
--- a/numpy/ma/mrecords.py
+++ b/numpy/ma/mrecords.py
@@ -19,7 +19,6 @@ import sys
 import warnings
 
 import numpy as np
-import numpy.core.numerictypes as ntypes
 from numpy.compat import basestring
 from numpy import (
         bool_, dtype, ndarray, recarray, array as narray
diff --git a/numpy/ma/timer_comparison.py b/numpy/ma/timer_comparison.py
index 68104ed0a..4ad635e38 100644
--- a/numpy/ma/timer_comparison.py
+++ b/numpy/ma/timer_comparison.py
@@ -430,11 +430,10 @@ if __name__ == '__main__':
     setup_cur = "import numpy.ma.core as module\n" + setup_base
     (nrepeat, nloop) = (10, 10)
 
-    if 1:
-        for i in range(1, 8):
-            func = 'tester.test_%i()' % i
-            cur = timeit.Timer(func, setup_cur).repeat(nrepeat, nloop*10)
-            cur = np.sort(cur)
-            print("#%i" % i + 50*'.')
-            print(eval("ModuleTester.test_%i.__doc__" % i))
-            print("core_current : %.3f - %.3f" % (cur[0], cur[1]))
+    for i in range(1, 8):
+        func = 'tester.test_%i()' % i
+        cur = timeit.Timer(func, setup_cur).repeat(nrepeat, nloop*10)
+        cur = np.sort(cur)
+        print("#%i" % i + 50*'.')
+        print(eval("ModuleTester.test_%i.__doc__" % i))
+        print("core_current : %.3f - %.3f" % (cur[0], cur[1]))
diff --git a/runtests.py b/runtests.py
index 8ec337ecf..23245aeac 100755
--- a/runtests.py
+++ b/runtests.py
@@ -259,8 +259,6 @@ def main(argv):
             ret = subprocess.call(cmd, cwd=os.path.join(ROOT_DIR, 'benchmarks'))
             sys.exit(ret)
 
-    test_dir = os.path.join(ROOT_DIR, 'build', 'test')
-
     if args.build_only:
         sys.exit(0)
     else: