added __contains__ for maps so std python "in" syntax works for checking keys. added to tests.

_examples/maps/test.py

@@ -28,6 +28,8 @@ if testall:
 
 print('map a[1]:', a[1])
 print('map a[2]:', a[2])
+print('2 in map:', 2 in a)
+print('3 in map:', 3 in a)
 
 # TODO: not sure why python2 doesn't just catch this error, but it doesn't seem to..
 # try:

bind/gen_map.go

@@ -198,11 +198,7 @@ otherwise parameter is a python list that we copy from
 
 		g.pywrap.Printf("def keys(self):\n")
 		g.pywrap.Indent()
-		if ksym.hasHandle() {
-			g.pywrap.Printf("return %s(handle=_%s_keys(self.handle))\n", keyslnm, qNm)
-		} else {
-			g.pywrap.Printf("return %s(handle=_%s_keys(self.handle))\n", keyslnm, qNm)
-		}
+		g.pywrap.Printf("return %s(handle=_%s_keys(self.handle))\n", keyslnm, qNm)
 		g.pywrap.Outdent()
 
 		g.pywrap.Printf("def values(self):\n")
@@ -232,6 +228,15 @@ otherwise parameter is a python list that we copy from
 		g.pywrap.Printf("return iter(self.items())\n")
 		g.pywrap.Outdent()
 
+		g.pywrap.Printf("def __contains__(self, key):\n")
+		g.pywrap.Indent()
+		if ksym.hasHandle() {
+			g.pywrap.Printf("return _%s_contains(self.handle, key.handle)\n", qNm)
+		} else {
+			g.pywrap.Printf("return _%s_contains(self.handle, key)\n", qNm)
+		}
+		g.pywrap.Outdent()
+
 		// g.pywrap.Printf("def __next__(self):\n")
 		// g.pywrap.Indent()
 		// g.pywrap.Printf("if self.index >= len(self):\n")
@@ -291,6 +296,22 @@ otherwise parameter is a python list that we copy from
 
 		g.pybuild.Printf("mod.add_function('%s_elem', retval('%s'), [param('%s', 'handle'), param('%s', '_ky')])\n", slNm, esym.cpyname, PyHandle, ksym.cpyname)
 
+		// contains
+		g.gofile.Printf("//export %s_contains\n", slNm)
+		g.gofile.Printf("func %s_contains(handle CGoHandle, _ky %s) C.char {\n", slNm, ksym.cgoname)
+		g.gofile.Indent()
+		g.gofile.Printf("s := *ptrFromHandle_%s(handle)\n", slNm)
+		if ksym.py2go != "" {
+			g.gofile.Printf("_, ok := s[%s(_ky)%s]\n", ksym.py2go, ksym.py2goParenEx)
+		} else {
+			g.gofile.Printf("_, ok := s[_ky]\n")
+		}
+		g.gofile.Printf("return boolGoToPy(ok)\n")
+		g.gofile.Outdent()
+		g.gofile.Printf("}\n\n")
+
+		g.pybuild.Printf("mod.add_function('%s_contains', retval('bool'), [param('%s', 'handle'), param('%s', '_ky')])\n", slNm, PyHandle, ksym.cpyname)
+
 		// set
 		g.gofile.Printf("//export %s_set\n", slNm)
 		g.gofile.Printf("func %s_set(handle CGoHandle, _ky %s, _vl %s) {\n", slNm, ksym.cgoname, esym.cgoname)

gopy.gide

@@ -28,7 +28,7 @@
     "Run Proj"
   ],
   "Find": {
-    "Find": "genMethod",
+    "Find": "bool",
     "Replace": "VarFromHandle",
     "IgnoreCase": false,
     "Langs": [
@@ -37,6 +37,7 @@
     ],
     "Loc": "FindLocAll",
     "FindHist": [
+      "bool",
       "genMethod",
       "genFuncBody",
       "boolPyToGo",
@@ -85,8 +86,7 @@
       "interface{}",
       "types.New",
       "C.Raise",
-      "mutex",
-      "t.Parallel"
+      "mutex"
     ],
     "ReplHist": [
       "VarFromHandle",

main_test.go

@@ -529,6 +529,8 @@ func TestBuiltinMaps(t *testing.T) {
 		lang: features[path],
 		want: []byte(`map a[1]: 3.0
 map a[2]: 5.0
+2 in map: True
+3 in map: False
 maps.Sum from Go map: 8.0
 map b: {1: 3.0, 2: 5.0}
 maps.Sum from Python dictionary: 8.0