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| author | Christian Heimes <christian@cheimes.de> | 2008-01-24 16:21:45 (GMT) |
|---|---|---|
| committer | Christian Heimes <christian@cheimes.de> | 2008-01-24 16:21:45 (GMT) |
| commit | e7a15bb808f2118920fed0b5949f821940cf7416 (patch) | |
| tree | 5b7015f62adf9b7c934f3b9aa83e80e5d7efa929 /Doc/tutorial | |
| parent | e83ebd9ab10adc43b0e6368c6985a4a90a85747f (diff) | |
| download | cpython-e7a15bb808f2118920fed0b5949f821940cf7416.zip cpython-e7a15bb808f2118920fed0b5949f821940cf7416.tar.gz cpython-e7a15bb808f2118920fed0b5949f821940cf7416.tar.bz2 | |
Merged revisions 60234-60244 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
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r60234 | gregory.p.smith | 2008-01-24 10:38:26 +0100 (Thu, 24 Jan 2008) | 4 lines
Fix issue1789: The tutorial contained a misuse of the struct module.
(also remove an unneeded import struct from test_largefile)
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r60237 | vinay.sajip | 2008-01-24 13:37:08 +0100 (Thu, 24 Jan 2008) | 1 line
Added optional delay argument to FileHandler and subclasses.
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r60238 | vinay.sajip | 2008-01-24 13:37:33 +0100 (Thu, 24 Jan 2008) | 1 line
Added optional delay argument to FileHandler and subclasses.
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r60239 | vinay.sajip | 2008-01-24 13:38:30 +0100 (Thu, 24 Jan 2008) | 1 line
Added documentation for optional delay argument to FileHandler and subclasses.
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r60240 | vinay.sajip | 2008-01-24 13:43:33 +0100 (Thu, 24 Jan 2008) | 1 line
Updated for optional delay argument to FileHandler and subclasses.
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r60243 | guido.van.rossum | 2008-01-24 16:53:22 +0100 (Thu, 24 Jan 2008) | 2 lines
Fi debug turd -- a call accidentally left out.
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Diffstat (limited to 'Doc/tutorial')
| -rw-r--r-- | Doc/tutorial/stdlib2.rst | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/Doc/tutorial/stdlib2.rst b/Doc/tutorial/stdlib2.rst index 4e8d37e..bab0114 100644 --- a/Doc/tutorial/stdlib2.rst +++ b/Doc/tutorial/stdlib2.rst @@ -134,8 +134,10 @@ Working with Binary Data Record Layouts The :mod:`struct` module provides :func:`pack` and :func:`unpack` functions for working with variable length binary record formats. The following example shows -how to loop through header information in a ZIP file (with pack codes ``"H"`` -and ``"L"`` representing two and four byte unsigned numbers respectively):: +how to loop through header information in a ZIP file without using the +:mod:`zipfile` module. Pack codes ``"H"`` and ``"I"`` represent two and four +byte unsigned numbers respectively. The ``"<"`` indicates that they are +standard size and in little-endian byte order:: import struct @@ -143,7 +145,7 @@ and ``"L"`` representing two and four byte unsigned numbers respectively):: start = 0 for i in range(3): # show the first 3 file headers start += 14 - fields = struct.unpack('LLLHH', data[start:start+16]) + fields = struct.unpack('<IIIHH', data[start:start+16]) crc32, comp_size, uncomp_size, filenamesize, extra_size = fields start += 16 |