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Cache sniffio availability instead of importing it on every call #1132

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Merged
Kludex merged 2 commits into from
Aug 13, 2026
+6 −3
Merged

Cache sniffio availability instead of importing it on every call #1132

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03405e7
Cache sniffio availability instead of importing it on every call
mbeijen Aug 11, 2026
b3f847f
Replace sniffio fallback tests with a coverage pragma
Kludex Aug 13, 2026
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9 changes: 6 additions & 3 deletions src/httpcore2/httpcore2/_synchronization.py
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Original file line number Diff line number Diff line change
Expand Up @@ -18,13 +18,16 @@
except ImportError: # pragma: no cover
anyio = None # type: ignore

try:
import sniffio
except ImportError: # pragma: no cover
sniffio = None # type: ignore


def current_async_library() -> str:
# Determine if we're running under trio or asyncio.
# See https://sniffio.readthedocs.io/en/latest/
try:
import sniffio
except ImportError: # pragma: no cover
if sniffio is None: # pragma: no cover
environment = "asyncio"
else:
environment = sniffio.current_async_library()
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