Update os/os.module.go

Co-authored-by: Sebastien Binet <binet@cern.ch>

Author: glaukiol1

os/os.module.go

@@ -116,25 +116,22 @@ func getpid(self py.Object, args py.Tuple) (py.Object, error) {
 
 // putenv sets the value of an environment variable named by the key.
 func putenv(self py.Object, args py.Tuple) (py.Object, error) {
-	if len(args) == 2 && objectIsString(args[0]) && objectIsString(args[1]) {
-		_k, err := py.ReprAsString(args[0])
-		if err != nil {
-			return nil, py.ExceptionNewf(py.TypeError, "Unable to parse string") // this will never execute
-		}
-		key := strings.ReplaceAll(_k, "'", "") // required
-		_v, err := py.ReprAsString(args[1])
-		if err != nil {
-			return nil, py.ExceptionNewf(py.TypeError, "Unable to parse string") // this will never execute
-		}
-		value := _v[1 : len(_v)-1]
-
-		err = os.Setenv(key, value)
-		if err != nil {
-			return nil, py.ExceptionNewf(py.OSError, "Unable to set enviroment variable")
-		}
-		return py.None, nil
+	if len(args) != 2 {
+		//... return error ...
+	}
+	k, ok := args[0].(py.String)
+	if !ok {
+		//... return error ...
 	}
-	return nil, py.ExceptionNewf(py.TypeError, "missing required arguments: 'key:str' and 'value:str'")
+	v, ok := args[1].(py.String)
+	if !ok {
+		//... return error ...
+	}
+	err := os.Setenv(string(k), string(v))
+	if err != nil {
+		return ...
+	}
+	return py.None, nil
 }
 
 // Unset (delete) the environment variable named key.