diff options
Diffstat (limited to 'Lib/struct.py')
-rw-r--r-- | Lib/struct.py | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Lib/struct.py b/Lib/struct.py index ee5ddc2..648e39c 100644 --- a/Lib/struct.py +++ b/Lib/struct.py @@ -73,3 +73,15 @@ def unpack(fmt, s): except KeyError: o = _compile(fmt) return o.unpack(s) + +def unpack_from(fmt, buf, offset=0): + """ + Unpack the buffer, containing packed C structure data, according to + fmt starting at offset. Requires len(buffer[offset:]) >= calcsize(fmt). + See struct.__doc__ for more on format strings. + """ + try: + o = _cache[fmt] + except KeyError: + o = _compile(fmt) + return o.unpack_from(buf, offset)
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