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Clarify the example by explicitly importing the fcntl module -- this 

avoid being fooled into thinking that fcntl and FCNTL are the same
thing -- they aren't!  (fcntl is the extension, FCNTL.py is h2py
output that defines all the constants).

(XXX The example is still weird -- I think there's a more portable way
to do locking now.  That's for someone else to fix...)
This commit is contained in:
Guido van Rossum 1999-06-24 17:58:44 +00:00
parent 336a201d4f
commit cf6905f986
1 changed files with 2 additions and 2 deletions
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4
Doc/lib/libfcntl.tex
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@ -63,13 +63,13 @@ opcodes in the C include files \code{<sys/fcntl.h>} and
Examples (all on a SVR4 compliant system):
\begin{verbatim}
import struct, FCNTL
import struct, fcntl, FCNTL
file = open(...)
rv = fcntl(file.fileno(), FCNTL.O_NDELAY, 1)
lockdata = struct.pack('hhllhh', FCNTL.F_WRLCK, 0, 0, 0, 0, 0)
rv = fcntl(file.fileno(), FCNTL.F_SETLKW, lockdata)
rv = fcntl.fcntl(file.fileno(), FCNTL.F_SETLKW, lockdata)
\end{verbatim}
Note that in the first example the return value variable \code{rv} will