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-rw-r--r--coverage/types.py5
1 files changed, 4 insertions, 1 deletions
diff --git a/coverage/types.py b/coverage/types.py
index d138b2f2..b7390962 100644
--- a/coverage/types.py
+++ b/coverage/types.py
@@ -6,7 +6,7 @@ Types for use throughout coverage.py.
"""
from types import ModuleType
-from typing import Dict, Iterable, List, Optional, Tuple, Union, TYPE_CHECKING
+from typing import Dict, Iterable, List, Optional, Sequence, Tuple, Union, TYPE_CHECKING
if TYPE_CHECKING:
# Protocol is new in 3.8. PYVERSIONS
@@ -74,3 +74,6 @@ class TDebugCtl(Protocol):
def write(self, msg: str) -> None:
"""Write a line of debug output."""
+
+# Data returned from sys_info()
+TSysInfo = Sequence[Tuple[str, Union[str, Iterable[str]]]]