*: remove unused imports

examples/basic/ctr_en.py

@@ -1,6 +1,6 @@
 from nmigen import *
 from nmigen.sim import *
-from nmigen.back import rtlil, verilog
+from nmigen.back import verilog
 
 
 class Counter(Elaboratable):

nmigen/_utils.py

@@ -5,7 +5,6 @@ import linecache
 import re
 from collections import OrderedDict
 from collections.abc import Iterable
-from contextlib import contextmanager
 
 from .utils import *
 

nmigen/back/rtlil.py

@@ -1,10 +1,9 @@
 import io
-import textwrap
+from collections import OrderedDict
-from collections import defaultdict, OrderedDict
 from contextlib import contextmanager
 
 from .._utils import bits_for, flatten
-from ..hdl import ast, rec, ir, mem, xfrm
+from ..hdl import ast, ir, mem, xfrm
 
 
 __all__ = ["convert", "convert_fragment"]

nmigen/compat/genlib/roundrobin.py

@@ -1,7 +1,6 @@
 import warnings
 
 from ..fhdl.structure import Signal, If, Case
-from ..._utils import deprecated
 from ..fhdl.module import CompatModule
 
 

nmigen/hdl/ast.py

@@ -1,8 +1,5 @@
 from abc import ABCMeta, abstractmethod
-import traceback
-import sys
 import warnings
-import typing
 import functools
 from collections import OrderedDict
 from collections.abc import Iterable, MutableMapping, MutableSet, MutableSequence

nmigen/hdl/dsl.py

@@ -1,11 +1,10 @@
-from collections import OrderedDict, namedtuple
+from collections import OrderedDict
-from collections.abc import Iterable
 from contextlib import contextmanager, _GeneratorContextManager
 from functools import wraps
 from enum import Enum
 import warnings
 
-from .._utils import flatten, bits_for, deprecated
+from .._utils import flatten, bits_for
 from .. import tracer
 from .ast import *
 from .ir import *

nmigen/hdl/ir.py

@@ -1,9 +1,7 @@
-from abc import ABCMeta, abstractmethod
+from abc import ABCMeta
 from collections import defaultdict, OrderedDict
 from functools import reduce
 import warnings
-import traceback
-import sys
 
 from .._utils import *
 from .._unused import *

nmigen/hdl/rec.py

@@ -3,7 +3,7 @@ from collections import OrderedDict
 from functools import reduce, wraps
 
 from .. import tracer
-from .._utils import union, deprecated
+from .._utils import union
 from .ast import *
 
 

nmigen/hdl/xfrm.py

@@ -2,7 +2,7 @@ from abc import ABCMeta, abstractmethod
 from collections import OrderedDict
 from collections.abc import Iterable
 
-from .._utils import flatten, deprecated
+from .._utils import flatten
 from .. import tracer
 from .ast import *
 from .ast import _StatementList

nmigen/lib/cdc.py

@@ -1,4 +1,3 @@
-from .._utils import deprecated
 from .. import *
 
 

nmigen/lib/fifo.py

@@ -2,7 +2,7 @@
 
 from .. import *
 from ..asserts import *
-from .._utils import log2_int, deprecated
+from .._utils import log2_int
 from .coding import GrayEncoder, GrayDecoder
 from .cdc import FFSynchronizer, AsyncFFSynchronizer
 

nmigen/sim/_pyclock.py

@@ -1,5 +1,3 @@
-import inspect
-
 from ._base import BaseProcess
 
 

nmigen/test/utils.py

@@ -6,7 +6,6 @@ import textwrap
 import traceback
 import unittest
 import warnings
-from contextlib import contextmanager
 
 from ..hdl.ast import *
 from ..hdl.ir import *

tests/compat/test_fsm.py

@@ -1,5 +1,4 @@
 import unittest
-from itertools import count
 
 from nmigen.compat import *
 from nmigen.compat.genlib.fsm import FSM

tests/test_sim.py

@@ -1,7 +1,7 @@
 import os
 from contextlib import contextmanager
 
-from nmigen._utils import flatten, union
+from nmigen._utils import flatten
 from nmigen.hdl.ast import *
 from nmigen.hdl.cd import  *
 from nmigen.hdl.mem import *

tests/utils.py

@@ -5,7 +5,6 @@ import subprocess
 import textwrap
 import traceback
 import unittest
-from contextlib import contextmanager
 
 from nmigen.hdl.ast import *
 from nmigen.hdl.ir import *