Remove the python version argument.

Author: Tonye Jack

README.md

@@ -28,8 +28,6 @@ Sample complex `.pre-commit-config.yaml`
       - id: graphene-django-hook
         stages: [commit]
         args: [
-          '--python-version',
-          '3.6', # Defaults to: 3.6
           '--managepy-path',
           '/path/to/manage.py', # Defaults to: manage.py
           '--settings',

graphene_django_hook.py

@@ -28,7 +28,6 @@ def run_command(command: str) -> int:
 
 def main(argv: Optional[Sequence[str]] = None) -> int:
     parser = argparse.ArgumentParser()
-    parser.add_argument('--python-version', default='3.6')
     parser.add_argument('--indent', default=None)
     parser.add_argument('--out', default=None)
     parser.add_argument('--schema', default=None)
@@ -37,7 +36,7 @@ def main(argv: Optional[Sequence[str]] = None) -> int:
     parser.add_argument('--settings', default=None)
     args = parser.parse_args(argv)
 
-    command = 'python{} {} graphql_schema'.format(args.python_version, args.managepy_path)
+    command = '{} {} graphql_schema'.format(sys.executable, args.managepy_path)
 
     if args.settings is not None:
         command += ' --settings={}'.format(args.settings)