clean up version_info references

src/flake8/checker.py

@@ -4,7 +4,6 @@ import errno
 import itertools
 import logging
 import signal
-import sys
 import tokenize
 from typing import Dict
 from typing import List
@@ -41,14 +40,11 @@ SERIAL_RETRY_ERRNOS = {
 
 def _multiprocessing_is_fork():  # type () -> bool
     """Class state is only preserved when using the `fork` strategy."""
-    if sys.version_info >= (3, 4):
-        return (
-            multiprocessing
-            # https://github.com/python/typeshed/pull/3415
-            and multiprocessing.get_start_method() == "fork"  # type: ignore
-        )
-    else:
-        return multiprocessing and not utils.is_windows()
+    return (
+        multiprocessing
+        # https://github.com/python/typeshed/pull/3415
+        and multiprocessing.get_start_method() == "fork"  # type: ignore
+    )
 
 
 class Manager:

src/flake8/utils.py

@@ -401,24 +401,13 @@ def parameters_for(plugin):
     if is_class:  # The plugin is a class
         func = plugin.plugin.__init__
 
-    if sys.version_info < (3, 3):
-        argspec = inspect.getargspec(func)
-        start_of_optional_args = len(argspec[0]) - len(argspec[-1] or [])
-        parameter_names = argspec[0]
-        parameters = collections.OrderedDict(
-            [
-                (name, position < start_of_optional_args)
-                for position, name in enumerate(parameter_names)
-            ]
-        )
-    else:
-        parameters = collections.OrderedDict(
-            [
-                (parameter.name, parameter.default is parameter.empty)
-                for parameter in inspect.signature(func).parameters.values()
-                if parameter.kind == parameter.POSITIONAL_OR_KEYWORD
-            ]
-        )
+    parameters = collections.OrderedDict(
+        [
+            (parameter.name, parameter.default is parameter.empty)
+            for parameter in inspect.signature(func).parameters.values()
+            if parameter.kind == parameter.POSITIONAL_OR_KEYWORD
+        ]
+    )
 
     if is_class:
         parameters.pop("self", None)

tests/unit/test_utils.py

@@ -308,7 +308,6 @@ def test_matches_filename_for_excluding_dotfiles():
     assert not utils.matches_filename('..', ('.*',), '', logger)
 
 
-@pytest.mark.xfail(sys.version_info < (3,), reason='py3+ only behaviour')
 def test_stdin_get_value_crlf():
     """Ensure that stdin is normalized from crlf to lf."""
     stdin = io.TextIOWrapper(io.BytesIO(b'1\r\n2\r\n'), 'UTF-8')