Small lint changes..

* Add # noqa to the __version__ import
* Remove #!/usr/bin/env python3 which is wrong here
* Remove unused imports in buitins

Author: rocky

mathics/builtin/__init__.py

@@ -1,13 +1,11 @@
-#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
-from mathics.core.expression import ensure_context
 
 import glob
 import importlib
 import re
 import os.path as osp
 from mathics.settings import ENABLE_FILES_MODULE
-from mathics.version import __version__
+from mathics.version import __version__  # noqa used in loading to check consistency.
 
 # Get a list of file in this directory. We'll exclude from the start
 # files with leading characters we don't want like __init__ with its leading underscore.
@@ -24,8 +22,6 @@
     PatternObject,
 )
 
-from mathics.settings import ENABLE_FILES_MODULE
-
 exclude_files = set(("files", "codetables", "base", "importexport", "colors"))
 module_names = [
     f for f in __py_files__ if re.match("^[a-z0-9]+$", f) if f not in exclude_files

mathics/builtin/algebra.py

@@ -1,10 +1,9 @@
-#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 """
 Algebraic Manipulation
 """
 
-from mathics.version import __version__
+from mathics.version import __version__  # noqa used in loading to check consistency.
 
 from mathics.builtin.base import Builtin
 from mathics.core.expression import Expression, Integer, Symbol, Atom, Number

mathics/builtin/arithmetic.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 # cython: language_level=3
 
@@ -8,7 +7,7 @@
 Basic arithmetic functions, including complex number arithmetic.
 """
 
-from mathics.version import __version__
+from mathics.version import __version__  # noqa used in loading to check consistency.
 import sympy
 import mpmath
 

mathics/builtin/assignment.py

@@ -1,7 +1,6 @@
-#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-from mathics.version import __version__
+from mathics.version import __version__  # noqa used in loading to check consistency.
 import mathics.builtin
 from mathics.builtin.base import (
     Builtin, BinaryOperator, PostfixOperator, PrefixOperator)

mathics/builtin/attributes.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 r"""
@@ -8,10 +7,9 @@
 However, you can set any symbol as an attribute, in contrast to \Mathematica.
 """
 
-from mathics.version import __version__
+from mathics.version import __version__  # noqa used in loading to check consistency.
 
 from mathics.builtin.base import Predefined, Builtin
-from mathics.builtin.evaluation import Sequence
 from mathics.core.expression import Expression, Symbol, SymbolNull, String
 from mathics.builtin.assignment import get_symbol_list
 

mathics/builtin/base.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 import re
@@ -10,7 +9,7 @@
 import typing
 from typing import Any, cast
 
-from mathics.version import __version__
+from mathics.version import __version__  # noqa used in loading to check consistency.
 
 from mathics.core.definitions import Definition
 from mathics.core.parser.util import SystemDefinitions, PyMathicsDefinitions