Fix flake8 errors

mesonbuild/astinterpreter.py

@@ -15,7 +15,7 @@
 # This class contains the basic functionality needed to run any interpreter
 # or an interpreter-based tool.
 
-from . import interpreterbase, mlog, mparser, mesonlib
+from . import interpreterbase, mparser, mesonlib
 from . import environment
 
 from .interpreterbase import InterpreterException, InvalidArguments, BreakRequest, ContinueRequest

mesonbuild/interpreter.py

@@ -37,7 +37,6 @@ import re, shlex
 import subprocess
 from collections import namedtuple
 from pathlib import PurePath
-import traceback
 import functools
 
 import importlib

mesonbuild/interpreterbase.py

@@ -749,7 +749,6 @@ The result of this is undefined and will become a hard error in a future Meson r
             except IndexError:
                 raise InterpreterException('Index %d out of bounds of array of size %d.' % (index, len(iobject)))
 
-
     def function_call(self, node):
         func_name = node.func_name
         (posargs, kwargs) = self.reduce_arguments(node.args)

mesonbuild/modules/python.py

@@ -23,11 +23,10 @@ from . import ExtensionModule
 from mesonbuild.modules import ModuleReturnValue
 from ..interpreterbase import (
     noPosargs, noKwargs, permittedKwargs,
-    InterpreterObject, InvalidArguments,
+    InvalidArguments,
     FeatureNew, FeatureNewKwargs, disablerIfNotFound
 )
 from ..interpreter import ExternalProgramHolder, extract_required_kwarg
-from ..interpreterbase import flatten
 from ..build import known_shmod_kwargs
 from .. import mlog
 from ..environment import detect_cpu_family