mypy thinks that return value of these methods in subclusses is
QEMUMachine, which is wrong. So, make typing smarter.
Suggested-by: John Snow <js...@redhat.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
---
python/qemu/machine/machine.py | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/python/qemu/machine/machine.py b/python/qemu/machine/machine.py
index ce1e130c13..1c347d2c30 100644
--- a/python/qemu/machine/machine.py
+++ b/python/qemu/machine/machine.py
@@ -36,6 +36,7 @@
Sequence,
Tuple,
Type,
+ TypeVar,
)
from qemu.qmp import ( # pylint: disable=import-error
@@ -73,6 +74,9 @@ class AbnormalShutdown(QEMUMachineError):
"""
+_T = TypeVar('_T', bound='QEMUMachine')
+
+
class QEMUMachine:
"""
A QEMU VM.
@@ -166,7 +170,7 @@ def __init__(self,
self._remove_files: List[str] = []
self._user_killed = False
- def __enter__(self) -> 'QEMUMachine':
+ def __enter__(self: _T) -> _T:
return self
def __exit__(self,
@@ -182,8 +186,8 @@ def add_monitor_null(self) -> None:
self._args.append('-monitor')
self._args.append('null')
- def add_fd(self, fd: int, fdset: int,
- opaque: str, opts: str = '') -> 'QEMUMachine':
+ def add_fd(self: _T, fd: int, fdset: int,
+ opaque: str, opts: str = '') -> _T:
"""
Pass a file descriptor to the VM
"""
--
2.29.2
