Python_多线程编程

from time import sleep,ctime
>>> def loop0():
print( 'start loop 0 at:',ctime() )
sleep(4)
print( 'loop0 done at :',ctime())

>>> def loop1():
print('start loop 1 at :',ctime())
sleep(2)
print('loop1 done at:',ctime())

>>> def main():
print( 'start main at:',ctime())
loop0()
loop1()
print( 'All DONE at:',ctime() )

>>> if __name__ == '__main__':
main()

from time import sleep,ctime
>>> def loop0():
print( 'start loop 0 at:',ctime() )
sleep(4)
print( 'loop0 done at :',ctime())

>>> def loop1():
print('start loop 1 at :',ctime())
sleep(2)
print('loop1 done at:',ctime())

>>> def main():
print( 'start main at:',ctime() )
thread.start_new_thread( loop0, () )
thread.start_new_thread( loop1,())
sleep(6)
print( 'all DONE at:',ctime() )

start_new_thread(...)
start_new_thread(function, args[, kwargs])
(start_new() is an obsolete synonym)

Start a new thread and return its identifier. The thread will call the
function with positional arguments from the tuple args and keyword arguments
taken from the optional dictionary kwargs. The thread exits when the
function returns; the return value is ignored. The thread will also exit
when the function raises an unhandled exception; a stack trace will be
printed unless the exception is SystemExit.