Misc Python 2 removal cleanups

* Fix flake8 warnings
* Fix tox command in setup.py
* Update requirements

pyperformance/benchmarks/__init__.py

@@ -304,27 +304,6 @@ def get_benchmarks():
     return (bench_funcs, bench_groups)
 
 
-def filter_benchmarks(benchmarks, bench_funcs, base_ver):
-    """Filters out benchmarks not supported by both Pythons.
-
-    Args:
-        benchmarks: a set() of benchmark names
-        bench_funcs: dict mapping benchmark names to functions
-        python: the interpereter commands (as lists)
-
-    Returns:
-        The filtered set of benchmark names
-    """
-    for bm in list(benchmarks):
-        func = bench_funcs[bm]
-        if getattr(func, '_python2_only', False) and (3, 0) <= base_ver:
-            benchmarks.discard(bm)
-            logging.info("Skipping Python2-only benchmark %s; "
-                         "not compatible with Python %s" % (bm, base_ver))
-            continue
-    return benchmarks
-
-
 def expand_benchmark_name(bm_name, bench_groups):
     """Recursively expand name benchmark names.
 

pyperformance/benchmarks/bm_hg_startup.py

@@ -9,7 +9,7 @@ def get_hg_version(hg_bin):
     # Fast-path: use directly the Python module
     try:
         from mercurial.__version__ import version
-        if sys.version_info >= (3,) and isinstance(version, bytes):
+        if isinstance(version, bytes):
             return version.decode('utf8')
         else:
             return version

pyperformance/benchmarks/bm_xml_etree.py

@@ -230,7 +230,7 @@ def add_cmdline_args(cmd, args):
                              "Default is '%s'" % default_etmodule)
     parser.add_argument("--no-accelerator", action="store_true", default=False,
                         help="Disable the '_elementree' accelerator module "
-                             "for ElementTree in Python 3.3+.")
+                             "for ElementTree.")
     parser.add_argument("benchmark", nargs='?', choices=BENCHMARKS)
 
     options = runner.parse_args()
@@ -270,7 +270,6 @@ def import_module(module_name):
         if options.no_accelerator:
             accelerator = False
         else:
-            # Python 3.0-3.2 always use the accelerator
             accelerator = True
     if accelerator:
         module += ' (with C accelerator)'

pyperformance/cli_run.py

@@ -5,20 +5,14 @@
 import pyperf
 
 import pyperformance
-from pyperformance.benchmarks import (filter_benchmarks, get_benchmarks,
-                                      select_benchmarks)
+from pyperformance.benchmarks import get_benchmarks, select_benchmarks
 from pyperformance.compare import display_benchmark_suite
 from pyperformance.run import run_benchmarks
 
 
-def filter_benchmarks_python(benchmarks, bench_funcs):
-    return filter_benchmarks(benchmarks, bench_funcs, sys.version_info)
-
-
 def get_benchmarks_to_run(options):
     bench_funcs, bench_groups = get_benchmarks()
     should_run = select_benchmarks(options.benchmarks, bench_groups)
-    should_run = filter_benchmarks_python(should_run, bench_funcs)
     return (bench_funcs, bench_groups, should_run)
 
 
@@ -71,7 +65,7 @@ def cmd_list_groups(options):
     bench_funcs, bench_groups = get_benchmarks()
 
     funcs = set(bench_groups['all'])
-    all_funcs = filter_benchmarks_python(set(funcs), bench_funcs)
+    all_funcs = set(funcs)
 
     for group, funcs in sorted(bench_groups.items()):
         funcs = set(funcs) & all_funcs

pyperformance/requirements.txt

@@ -19,7 +19,7 @@ psutil==5.6.7
 pyaes==1.6.1
 pyperf==1.7.0
 pytz==2019.3              # via django
-six==1.14.0
+six==1.14.0               # via html5lib, pyperf
 sqlalchemy==1.3.13
 sqlparse==0.3.0           # via django
 sympy==1.5.1

pyperformance/venv.py

@@ -1,6 +1,5 @@
 import errno
 import os
-import platform
 import shutil
 import subprocess
 import sys
@@ -81,12 +80,7 @@ def safe_rmtree(path):
 
 
 def python_implementation():
-    if hasattr(sys, 'implementation'):
-        # PEP 421, Python 3.3
-        name = sys.implementation.name
-    else:
-        name = platform.python_implementation()
-    return name.lower()
+    return sys.implementation.name.lower()
 
 
 def get_venv_program(program):
@@ -213,22 +207,16 @@ def get_path(self):
 
         script = textwrap.dedent("""
             import hashlib
-            import platform
             import sys
 
             performance_version = sys.argv[1]
             requirements = sys.argv[2]
 
             data = performance_version + sys.executable + sys.version
 
-            pyver= sys.version_info
+            pyver = sys.version_info
 
-            if hasattr(sys, 'implementation'):
-                # PEP 421, Python 3.3
-                implementation = sys.implementation.name
-            else:
-                implementation = platform.python_implementation()
-            implementation = implementation.lower()
+            implementation = sys.implementation.name.lower()
 
             if not isinstance(data, bytes):
                 data = data.encode('utf-8')

setup.py

@@ -18,7 +18,7 @@
 #  - maybe update version in pyperformance/__init__.py and doc/conf.py
 #  - set release date in doc/changelog.rst
 #  - git commit -a -m "prepare release x.y"
-#  - run tests: tox --parallel 0
+#  - run tests: tox --parallel auto
 #  - git push
 #  - check Travis CI status:
 #    https://travis-ci.org/python/pyperformance