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Update requests_csv.py #84

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Update requests_csv.py #84

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13 changes: 13 additions & 0 deletions zipline/sources/requests_csv.py
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Original file line number Diff line number Diff line change
Expand Up @@ -563,6 +563,19 @@ def fetch_url(self, url):
if content_length > self.MAX_DOCUMENT_SIZE:
raise Exception('Document size too big.')
if chunk:
if isinstance(chunk, bytes):
if content_length == 0:
import codecs
if chunk[:3] == codecs.BOM_UTF8:
encoding = 'utf-8-sig'
elif chunk[:2] == codecs.BOM_UTF16_LE or chunk[:2] == codecs.BOM_UTF16_BE:
encoding = 'utf-16'
elif chunk[:4] == codecs.BOM_UTF32_LE or chunk[:4] == codecs.BOM_UTF32_BE:
encoding = 'utf-32'
else:
encoding = 'utf-8'
decoder = codecs.getincrementaldecoder(encoding)(errors='replace')
chunk = decoder.decode(chunk)
content_length += len(chunk)
yield chunk

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