python3: Add language_version() method

mesonbuild/modules/python3.py

@@ -13,11 +13,13 @@
 # limitations under the License.
 
 import sys
+import sysconfig
 from .. import mesonlib, dependencies
 
 from . import ExtensionModule
 from mesonbuild.modules import ModuleReturnValue
 
+
 class Python3Module(ExtensionModule):
     def __init__(self):
         super().__init__()
@@ -45,5 +47,11 @@ class Python3Module(ExtensionModule):
         py3 = dependencies.ExternalProgram('python3', sys.executable, silent=True)
         return ModuleReturnValue(py3, [py3])
 
+    def language_version(self, state, args, kwargs):
+        if args or kwargs:
+            raise mesonlib.MesonException('language_version() takes no arguments.')
+        return ModuleReturnValue(sysconfig.get_python_version(), [])
+
+
 def initialize():
     return Python3Module()