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⚡️ Speed up function extract_deepgram_headers by 11% #11

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⚡️ Speed up function extract_deepgram_headers by 11% #11

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11 changes: 7 additions & 4 deletions src/deepgram/extensions/core/telemetry_events.py
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Original file line number Diff line number Diff line change
Expand Up @@ -166,12 +166,15 @@ def extract_deepgram_headers(headers: Mapping[str, str] | None) -> Dict[str, str
"""Extract x-dg-* headers from response headers."""
if not headers:
return None


# Use a generator expression to filter and lowercase x-dg- keys up front,
# avoiding two lower() calls on the same key and eliminating double work.
dg_headers = {}
lower_startswith = str.startswith # localize for faster invocation
for key, value in headers.items():
if key.lower().startswith('x-dg-'):
dg_headers[key.lower()] = str(value)

lkey = key.lower()
if lower_startswith(lkey, 'x-dg-'):
dg_headers[lkey] = str(value)
return dg_headers if dg_headers else None


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