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| author | Gregory P. Smith <greg@mad-scientist.com> | 2008-01-24 09:38:26 (GMT) |
|---|---|---|
| committer | Gregory P. Smith <greg@mad-scientist.com> | 2008-01-24 09:38:26 (GMT) |
| commit | 7b7ce7854c2e36d04adb42beec5f673071cf1fd4 (patch) | |
| tree | 4f329e6b777309aa8bb79ea8b79d0072fb50766f /Doc | |
| parent | 7070094d7ffd4308e12188b39d0f346473581335 (diff) | |
| download | cpython-7b7ce7854c2e36d04adb42beec5f673071cf1fd4.zip cpython-7b7ce7854c2e36d04adb42beec5f673071cf1fd4.tar.gz cpython-7b7ce7854c2e36d04adb42beec5f673071cf1fd4.tar.bz2 | |
Fix issue1789: The tutorial contained a misuse of the struct module.
(also remove an unneeded import struct from test_largefile)
Diffstat (limited to 'Doc')
| -rw-r--r-- | Doc/library/struct.rst | 4 | ||||
| -rw-r--r-- | Doc/tutorial/stdlib2.rst | 8 |
2 files changed, 7 insertions, 5 deletions
diff --git a/Doc/library/struct.rst b/Doc/library/struct.rst index d4952bb..d0960ed 100644 --- a/Doc/library/struct.rst +++ b/Doc/library/struct.rst @@ -85,7 +85,7 @@ Python values should be obvious given their types: +--------+-------------------------+--------------------+-------+ | ``i`` | :ctype:`int` | integer | | +--------+-------------------------+--------------------+-------+ -| ``I`` | :ctype:`unsigned int` | long | | +| ``I`` | :ctype:`unsigned int` | integer or long | | +--------+-------------------------+--------------------+-------+ | ``l`` | :ctype:`long` | integer | | +--------+-------------------------+--------------------+-------+ @@ -104,7 +104,7 @@ Python values should be obvious given their types: +--------+-------------------------+--------------------+-------+ | ``p`` | :ctype:`char[]` | string | | +--------+-------------------------+--------------------+-------+ -| ``P`` | :ctype:`void \*` | integer | | +| ``P`` | :ctype:`void \*` | long | | +--------+-------------------------+--------------------+-------+ Notes: diff --git a/Doc/tutorial/stdlib2.rst b/Doc/tutorial/stdlib2.rst index 14c60dd..73a896d 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 |