[3.6] bpo-30871: Add test.pythoninfo (#3174)

* bpo-30871: Add test.pythoninfo (#3075)

* Add Lib/test/pythoninfo.py: script collecting various informations
  about Python to help debugging test failures.
* regrtest: remove sys.hash_info and sys.flags from header.
* Travis CI, Appveyor: run pythoninfo before tests
(cherry picked from commit b907abc8)

* bpo-30871: pythoninfo: add expat and _decimal (#3121)

* bpo-30871: pythoninfo: add expat and _decimal

* Remove _decimal.__version__

The string is hardcoded, not really interesting.

(cherry picked from commit f6ebd838)

* bpo-30871: Add "make pythoninfo" (#3120)

(cherry picked from commit a3a01a2f)

* bpo-30871: pythoninfo: more sys, os, time data (#3130)

* bpo-30871: pythoninfo: more sys, os, time data

PythonInfo now converts types other than intger to string by default.

* fix typo

(cherry picked from commit ad7eaed5)

* bpo-31231: Fix pythoninfo in Travis config (#3134)

bpo-31231, bpo-30871: Replace "./python -m test.pythoninfo" with
"make pythoninfo", since macOS uses ./python.exe.
(cherry picked from commit 92b1f901)

.github/appveyor.yml

@@ -7,6 +7,7 @@ branches:
     - buildbot-custom
 build_script:
 - cmd: PCbuild\build.bat -e
+- cmd: PCbuild\win32\python.exe -m test.pythoninfo
 test_script:
 - cmd: PCbuild\rt.bat -q -uall -u-cpu -rwW --slowest --timeout=1200 -j0
 environment:

.travis.yml

@@ -59,6 +59,7 @@ matrix:
             # Need a venv that can parse covered code.
             ./python -m venv venv
             ./venv/bin/python -m pip install -U coverage
+            ./venv/bin/python -m test.pythoninfo
       script:
         # Skip tests that re-run the entire test suite.
         - ./venv/bin/python -m coverage run --pylib -m test -uall,-cpu -x test_multiprocessing_fork -x test_multiprocessing_forkserver -x test_multiprocessing_spawn
@@ -86,6 +87,7 @@ before_script:
         echo "$changes"
         exit 1
       fi
+      make pythoninfo
 
 script:
   # Using the built Python as patchcheck.py is built around the idea of using

Lib/test/libregrtest/main.py

@@ -423,8 +423,6 @@ class Regrtest:
         print("==", platform.python_implementation(), *sys.version.split())
         print("==", platform.platform(aliased=True),
                       "%s-endian" % sys.byteorder)
-        print("== hash algorithm:", sys.hash_info.algorithm,
-              "64bit" if sys.maxsize > 2**32 else "32bit")
         print("== cwd:", os.getcwd())
         cpu_count = os.cpu_count()
         if cpu_count:
@@ -432,7 +430,6 @@ class Regrtest:
         print("== encodings: locale=%s, FS=%s"
               % (locale.getpreferredencoding(False),
                  sys.getfilesystemencoding()))
-        print("Testing with flags:", sys.flags)
 
     def run_tests(self):
         # For a partial run, we do not need to clutter the output.

Makefile.pre.in

@@ -1001,6 +1001,8 @@ TESTPYTHON=	$(RUNSHARED) ./$(BUILDPYTHON) $(TESTPYTHONOPTS)
 TESTRUNNER=	$(TESTPYTHON) $(srcdir)/Tools/scripts/run_tests.py
 TESTTIMEOUT=	1200
 
+.PHONY: test testall testuniversal buildbottest pythoninfo
+
 # Run a basic set of regression tests.
 # This excludes some tests that are particularly resource-intensive.
 test:		@DEF_MAKE_RULE@ platform
@@ -1039,6 +1041,9 @@ buildbottest:	build_all platform
 		fi
 		$(TESTRUNNER) -j 1 -u all -W --slowest --timeout=$(TESTTIMEOUT) $(TESTOPTS)
 
+pythoninfo: build_all
+		$(RUNSHARED) ./$(BUILDPYTHON) -m test.pythoninfo
+
 QUICKTESTOPTS=	$(TESTOPTS) -x test_subprocess test_io test_lib2to3 \
 		test_multibytecodec test_urllib2_localnet test_itertools \
 		test_multiprocessing_fork test_multiprocessing_spawn \