Merge pull request #322 from go-python/py2

all: drop python2 support

.github/workflows/ci.yml

@@ -22,7 +22,7 @@ jobs:
     name: Build
     strategy:
       matrix:
-        go-version: [1.19.x, 1.18.x]
+        go-version: [1.20.x, 1.19.x]
         platform: [ubuntu-latest]
         #platform: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.platform }}
@@ -52,26 +52,17 @@ jobs:
       if: matrix.platform == 'ubuntu-latest'
       run: |
         sudo apt-get update
-        sudo apt-get install curl libffi-dev python-cffi python3-cffi python3-pip
+        sudo apt-get install curl libffi-dev python3-cffi python3-pip
         # pypy3 isn't packaged in ubuntu yet.
         TEMPDIR=$(mktemp -d)
-        curl -L https://downloads.python.org/pypy/pypy2.7-${PYPYVERSION}-linux64.tar.bz2 --output $TEMPDIR/pypy2.tar.bz2
         curl -L https://downloads.python.org/pypy/pypy3.6-${PYPYVERSION}-linux64.tar.bz2 --output $TEMPDIR/pypy3.tar.bz2
-        tar xf $TEMPDIR/pypy2.tar.bz2 -C $TEMPDIR
         tar xf $TEMPDIR/pypy3.tar.bz2 -C $TEMPDIR
-        sudo ln -s $TEMPDIR/pypy2.7-$PYPYVERSION-linux64/bin/pypy  /usr/local/bin/pypy
         sudo ln -s $TEMPDIR/pypy3.6-$PYPYVERSION-linux64/bin/pypy3 /usr/local/bin/pypy3
-        # install pip (for pypy, python2)
-        curl -L https://bootstrap.pypa.io/pip/2.7/get-pip.py --output ${TEMPDIR}/get-pip2.py
-        python2 ${TEMPDIR}/get-pip2.py
         # curl -L https://bootstrap.pypa.io/get-pip.py --output ${TEMPDIR}/get-pip.py
-        # pypy ${TEMPDIR}/get-pip.py
         # pypy3 ${TEMPDIR}/get-pip.py
 
         # install pybindgen
-        python2 -m pip install --user -U pybindgen
         python3 -m pip install --user -U pybindgen
-        # pypy  -m pip install --user -U pybindgen
         # pypy3 -m pip install --user -U pybindgen
 
         # install goimports

SUPPORT_MATRIX.md

@@ -3,31 +3,31 @@
 NOTE: File auto-generated by TestCheckSupportMatrix in main_test.go. Please
 don't modify manually.
 
-Feature |py2 | py3
---- | --- | ---
-_examples/arrays | yes | yes
-_examples/cgo | yes | yes
-_examples/consts | yes | yes
-_examples/cstrings | yes | yes
-_examples/empty | yes | yes
-_examples/funcs | yes | yes
-_examples/gopygc | yes | yes
-_examples/gostrings | yes | yes
-_examples/hi | no | yes
-_examples/iface | no | yes
-_examples/lot | yes | yes
-_examples/maps | yes | yes
-_examples/named | yes | yes
-_examples/osfile | yes | yes
-_examples/pkgconflict | yes | yes
-_examples/pointers | yes | yes
-_examples/pyerrors | yes | yes
-_examples/rename | yes | yes
-_examples/seqs | yes | yes
-_examples/simple | yes | yes
-_examples/sliceptr | yes | yes
-_examples/slices | yes | yes
-_examples/structs | yes | yes
-_examples/unicode | no | yes
-_examples/variadic | no | yes
-_examples/vars | yes | yes
+Feature |py3
+--- | ---
+_examples/arrays | yes
+_examples/cgo | yes
+_examples/consts | yes
+_examples/cstrings | yes
+_examples/empty | yes
+_examples/funcs | yes
+_examples/gopygc | yes
+_examples/gostrings | yes
+_examples/hi | yes
+_examples/iface | yes
+_examples/lot | yes
+_examples/maps | yes
+_examples/named | yes
+_examples/osfile | yes
+_examples/pkgconflict | yes
+_examples/pointers | yes
+_examples/pyerrors | yes
+_examples/rename | yes
+_examples/seqs | yes
+_examples/simple | yes
+_examples/sliceptr | yes
+_examples/slices | yes
+_examples/structs | yes
+_examples/unicode | yes
+_examples/variadic | yes
+_examples/vars | yes

appveyor.yml

@@ -14,7 +14,7 @@ branches:
 
 environment:
   GOPATH: C:\gopath
-  GOROOT: C:\go115
+  GOROOT: C:\go119
   GOPY_APPVEYOR_CI: '1'
   GOTRACEBACK: 'crash'
   #CPYTHON2DIR: "C:\\Python27-x64"
@@ -22,17 +22,13 @@ environment:
   #PATH: '%GOPATH%\bin;%CPYTHON2DIR%;%CPYTHON2DIR%\\Scripts;%CPYTHON3DIR%;%CPYTHON3DIR%\\Scripts;C:\msys64\mingw64\bin;C:\msys64\usr\bin\;%PATH%'
   PATH: '%GOPATH%\bin;%GOROOT%\bin;%CPYTHON3DIR%;%CPYTHON3DIR%\\Scripts;C:\msys64\mingw64\bin;C:\msys64\usr\bin\;%PATH%'
 
-stack: go 1.15
+stack: go 1.19
 
 build_script:
   - python --version
-    #- "%CPYTHON2DIR%\\python --version"
   - "%CPYTHON3DIR%\\python --version"
-    #- "%CPYTHON2DIR%\\python -m pip install --upgrade pip"
   - "%CPYTHON3DIR%\\python -m pip install --upgrade pip"
-    #- "%CPYTHON2DIR%\\python -m pip install cffi"
   - "%CPYTHON3DIR%\\python -m pip install cffi"
-    #- "%CPYTHON2DIR%\\python -m pip install pybindgen"
   - "%CPYTHON3DIR%\\python -m pip install pybindgen"
   - go version
   - go env

bind/utils.go

@@ -103,7 +103,13 @@ func (pc *PyConfig) AllFlags() string {
 // python VM (python, python2, python3, pypy, etc...)
 func GetPythonConfig(vm string) (PyConfig, error) {
 	code := `import sys
-import distutils.sysconfig as ds
+try:
+	import sysconfig as ds
+	def _get_python_inc():
+		return ds.get_path('include')
+except ImportError:
+	import distutils.sysconfig as ds
+	_get_python_inc = ds.get_config_var
 import json
 import os
 version=sys.version_info.major
@@ -133,7 +139,7 @@ else:
 	print(json.dumps({
 		"version": sys.version_info.major,
 		"minor": sys.version_info.minor,
-		"incdir":  ds.get_python_inc(),
+		"incdir":  _get_python_inc(),
 		"libdir":  ds.get_config_var("LIBDIR"),
 		"libpy":   ds.get_config_var("LIBRARY"),
 		"shlibs":  ds.get_config_var("SHLIBS"),

go.mod

@@ -1,6 +1,6 @@
 module github.com/go-python/gopy
 
-go 1.18
+go 1.19
 
 require (
 	github.com/gonuts/commander v0.1.0

main_test.go

@@ -23,31 +23,31 @@ import (
 var (
 	testBackends = map[string]string{}
 	features     = map[string][]string{
-		"_examples/hi":          []string{"py3"}, // output is different for 2 vs. 3 -- only checking 3 output
-		"_examples/funcs":       []string{"py2", "py3"},
-		"_examples/sliceptr":    []string{"py2", "py3"},
-		"_examples/simple":      []string{"py2", "py3"},
-		"_examples/empty":       []string{"py2", "py3"},
-		"_examples/named":       []string{"py2", "py3"},
-		"_examples/structs":     []string{"py2", "py3"},
-		"_examples/consts":      []string{"py2", "py3"}, // 2 doesn't report .666 decimals
-		"_examples/vars":        []string{"py2", "py3"},
-		"_examples/seqs":        []string{"py2", "py3"},
-		"_examples/cgo":         []string{"py2", "py3"},
-		"_examples/pyerrors":    []string{"py2", "py3"},
-		"_examples/iface":       []string{"py3"}, // output order diff for 2, fails but actually works
-		"_examples/pointers":    []string{"py2", "py3"},
-		"_examples/arrays":      []string{"py2", "py3"},
-		"_examples/slices":      []string{"py2", "py3"},
-		"_examples/maps":        []string{"py2", "py3"},
-		"_examples/gostrings":   []string{"py2", "py3"},
-		"_examples/rename":      []string{"py2", "py3"},
-		"_examples/lot":         []string{"py2", "py3"},
-		"_examples/unicode":     []string{"py3"}, // doesn't work for 2
-		"_examples/osfile":      []string{"py2", "py3"},
-		"_examples/gopygc":      []string{"py2", "py3"},
-		"_examples/cstrings":    []string{"py2", "py3"},
-		"_examples/pkgconflict": []string{"py2", "py3"},
+		"_examples/hi":          []string{"py3"},
+		"_examples/funcs":       []string{"py3"},
+		"_examples/sliceptr":    []string{"py3"},
+		"_examples/simple":      []string{"py3"},
+		"_examples/empty":       []string{"py3"},
+		"_examples/named":       []string{"py3"},
+		"_examples/structs":     []string{"py3"},
+		"_examples/consts":      []string{"py3"},
+		"_examples/vars":        []string{"py3"},
+		"_examples/seqs":        []string{"py3"},
+		"_examples/cgo":         []string{"py3"},
+		"_examples/pyerrors":    []string{"py3"},
+		"_examples/iface":       []string{"py3"},
+		"_examples/pointers":    []string{"py3"},
+		"_examples/arrays":      []string{"py3"},
+		"_examples/slices":      []string{"py3"},
+		"_examples/maps":        []string{"py3"},
+		"_examples/gostrings":   []string{"py3"},
+		"_examples/rename":      []string{"py3"},
+		"_examples/lot":         []string{"py3"},
+		"_examples/unicode":     []string{"py3"},
+		"_examples/osfile":      []string{"py3"},
+		"_examples/gopygc":      []string{"py3"},
+		"_examples/cstrings":    []string{"py3"},
+		"_examples/pkgconflict": []string{"py3"},
 		"_examples/variadic":    []string{"py3"},
 	}
 
@@ -130,7 +130,6 @@ ignoring python incompatible function: .func github.com/go-python/gopy/_examples
 func TestHi(t *testing.T) {
 	// t.Parallel()
 	path := "_examples/hi"
-	// NOTE: output differs for python2 -- only valid checking for 3
 	testPkg(t, pkg{
 		path:   path,
 		lang:   features[path],
@@ -216,7 +215,7 @@ caught: can't work for 24 hours!
 --- p.Salary(24): caught: can't work for 24 hours!
 --- Person.__init__
 caught: argument 2 must be str, not int | err-type: <class 'TypeError'>
-caught: an integer is required (got type str) | err-type: <class 'TypeError'>
+caught: 'str' object cannot be interpreted as an integer | err-type: <class 'TypeError'>
 *ERROR* no exception raised!
 hi.Person{Name="name", Age=0}
 hi.Person{Name="name", Age=42}
@@ -923,7 +922,6 @@ type pkg struct {
 }
 
 func testPkg(t *testing.T, table pkg) {
-	// backends := []string{"py2", "py3"}
 	backends := []string{"py3"}
 	// backends := table.lang // todo: enabling py2 testing requires separate "want" output
 	for _, be := range backends {
@@ -935,11 +933,6 @@ func testPkg(t *testing.T, table pkg) {
 			continue
 		}
 		switch be {
-		case "py2":
-			t.Run(be, func(t *testing.T) {
-				// t.Parallel()
-				testPkgBackend(t, vm, table)
-			})
 		case "py3":
 			t.Run(be, func(t *testing.T) {
 				// t.Parallel()
@@ -1062,6 +1055,10 @@ func testPkgBackend(t *testing.T, pyvm string, table pkg) {
 				diff, _ := cmd.CombinedOutput()
 				diffTxt = string(diff) + "\n"
 			}
+			t.Fatalf("[%s:%s]: error running python module:\n%s",
+				pyvm, table.path,
+				diffTxt,
+			)
 		}
 
 		t.Fatalf("[%s:%s]: error running python module:\ngot:\n%s\n\nwant:\n%s\n[%s:%s] diff:\n%s",

main_unix_test.go

@@ -19,9 +19,7 @@ func init() {
 	testEnvironment = os.Environ()
 
 	var (
-		py2 = "python2"
 		py3 = "python3"
-		// pypy2 = "pypy"
 		// pypy3 = "pypy3"
 	)
 
@@ -40,7 +38,6 @@ func init() {
 		mandatory bool
 	}{
 		{"py3", py3, "", true},
-		{"py2", py2, "", true},
 	} {
 		args := []string{"-c", ""}
 		if be.module != "" {

main_windows_test.go

@@ -40,7 +40,6 @@ func init() {
 		mandatory bool
 	}{
 		{"py3", py3, "", true},
-		// {"py2", py2, "", true},
 	} {
 		args := []string{"-c", ""}
 		if be.module != "" {