Remove trailing whitespace.

1 files changed, 21 insertions, 21 deletions

diff --git a/Doc/library/signal.rst b/Doc/library/signal.rst
index 5033e0e..2db17c5 100644
--- a/Doc/library/signal.rst
+++ b/Doc/library/signal.rst
@@ -39,12 +39,12 @@ rules for working with signals and their handlers:
 * Some care must be taken if both signals and threads are used in the same
   program.  The fundamental thing to remember in using signals and threads
   simultaneously is: always perform :func:`signal` operations in the main thread
-  of execution.  Any thread can perform an :func:`alarm`, :func:`getsignal`, 
-  :func:`pause`, :func:`setitimer` or :func:`getitimer`; only the main thread 
-  can set a new signal handler, and the main thread will be the only one to 
-  receive signals (this is enforced by the Python :mod:`signal` module, even 
-  if the underlying thread implementation supports sending signals to 
-  individual threads).  This means that signals can't be used as a means of 
+  of execution.  Any thread can perform an :func:`alarm`, :func:`getsignal`,
+  :func:`pause`, :func:`setitimer` or :func:`getitimer`; only the main thread
+  can set a new signal handler, and the main thread will be the only one to
+  receive signals (this is enforced by the Python :mod:`signal` module, even
+  if the underlying thread implementation supports sending signals to
+  individual threads).  This means that signals can't be used as a means of
   inter-thread communication.  Use locks instead.
 
 The variables defined in the :mod:`signal` module are:
@@ -80,22 +80,22 @@ The variables defined in the :mod:`signal` module are:
    One more than the number of the highest signal number.
 
 
-.. data:: ITIMER_REAL    
+.. data:: ITIMER_REAL
 
    Decrements interval timer in real time, and delivers :const:`SIGALRM` upon expiration.
 
 
-.. data:: ITIMER_VIRTUAL 
+.. data:: ITIMER_VIRTUAL
 
-   Decrements interval timer only when the process is executing, and delivers 
+   Decrements interval timer only when the process is executing, and delivers
    SIGVTALRM upon expiration.
 
 
 .. data:: ITIMER_PROF
-   
-   Decrements interval timer both when the process executes and when the 
-   system is executing on behalf of the process. Coupled with ITIMER_VIRTUAL, 
-   this timer is usually used to profile the time spent by the application 
+
+   Decrements interval timer both when the process executes and when the
+   system is executing on behalf of the process. Coupled with ITIMER_VIRTUAL,
+   this timer is usually used to profile the time spent by the application
    in user and kernel space. SIGPROF is delivered upon expiration.
 
 
@@ -105,7 +105,7 @@ The :mod:`signal` module defines one exception:
 
    Raised to signal an error from the underlying :func:`setitimer` or
    :func:`getitimer` implementation. Expect this error if an invalid
-   interval timer or a negative time is passed to :func:`setitimer`. 
+   interval timer or a negative time is passed to :func:`setitimer`.
    This error is a subtype of :exc:`IOError`.
 
 
@@ -143,21 +143,21 @@ The :mod:`signal` module defines the following functions:
 
 .. function:: setitimer(which, seconds[, interval])
 
-   Sets given interval timer (one of :const:`signal.ITIMER_REAL`, 
+   Sets given interval timer (one of :const:`signal.ITIMER_REAL`,
    :const:`signal.ITIMER_VIRTUAL` or :const:`signal.ITIMER_PROF`) specified
-   by *which* to fire after *seconds* (float is accepted, different from 
+   by *which* to fire after *seconds* (float is accepted, different from
    :func:`alarm`) and after that every *interval* seconds. The interval
    timer specified by *which* can be cleared by setting seconds to zero.
 
    When an interval timer fires, a signal is sent to the process.
-   The signal sent is dependent on the timer being used; 
-   :const:`signal.ITIMER_REAL` will deliver :const:`SIGALRM`, 
+   The signal sent is dependent on the timer being used;
+   :const:`signal.ITIMER_REAL` will deliver :const:`SIGALRM`,
    :const:`signal.ITIMER_VIRTUAL` sends :const:`SIGVTALRM`,
    and :const:`signal.ITIMER_PROF` will deliver :const:`SIGPROF`.
 
    The old values are returned as a tuple: (delay, interval).
 
-   Attempting to pass an invalid interval timer will cause a 
+   Attempting to pass an invalid interval timer will cause a
    :exc:`ItimerError`.
 
 
@@ -186,7 +186,7 @@ The :mod:`signal` module defines the following functions:
    will be restarted when interrupted by signal *signalnum*, otherwise system calls will
    be interrupted. Returns nothing. Availability: Unix (see the man page
    :manpage:`siginterrupt(3)` for further information).
-   
+
    Note that installing a signal handler with :func:`signal` will reset the restart
    behaviour to interruptible by implicitly calling :cfunc:`siginterrupt` with a true *flag*
    value for the given signal.
@@ -233,7 +233,7 @@ be sent, and the handler raises an exception. ::
    signal.alarm(5)
 
    # This open() may hang indefinitely
-   fd = os.open('/dev/ttyS0', os.O_RDWR)  
+   fd = os.open('/dev/ttyS0', os.O_RDWR)
 
    signal.alarm(0)          # Disable the alarm