Bug on Python2.3.4 [FreeBSD]?

paolino paolo_veronelli at yahoo.it
Fri Aug 12 22:12:51 CEST 2005


Uwe Mayer wrote:
> <posted & mailed>
> 
> Hi,
> 
> AFAICT there seems to be a bug on FreeBSD's Python 2.3.4 open function. The
> documentation states:
> 
> 
>>Modes 'r+', 'w+' and 'a+' open the file for updating (note that 'w+'
>>truncates the file). Append 'b' to the mode to open the file in binary
>>mode, on systems that differentiate between binary and text files (else it
>>is ignored). If the file cannot be opened, IOError is raised.   
> 
> 
> Consider:
> 
> $ cat test
> lalala
> 
> $ python2.3
> Python 2.3.4 (#2, Jan  4 2005, 04:42:43)
> [GCC 2.95.4 20020320 [FreeBSD]] on freebsd4
> Type "help", "copyright", "credits" or "license" for more information.
> 
>>>>f = open('test', 'r+')
>>>>f.read()
> 
> 'lalala\n'
> 
>>>>f.write('testing')
>>>>f.close()
>>>>
> 
> [1]+  Stopped                 python2.3
> $ cat test
> lalala
> 
> -> write did not work; ok
> 

This worked here on freebsd 5.4 / python 2.4

> $ fg
> python2.3
> 
>>>>f = open('test', 'a+')
>>>>f.read()
> 
> ''
> 
> -> append mode does not read from file, *not ok*
> 
> 
This is right IMO 'a' is appending so seek(-1)


Ciao



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