Bug? print statement ends with ',' print a new line

[Fredrik Lundh]

"Lu" <jxlu at fudan.edu.cn> wrote:

> C:\FAT32\py>type counter.py
> import sys
> import threading
>
> class Counter:
>     def __init__(self,count=0):
>         self.count=count
>     def start(self):
>         if self.count>0:
>             print self.count,'.',
>             self.count-=1
>             t=threading.Timer(1,self.start)
>             t.start()
>         elif self.count==0:
>             print self.count
>
> counter=Counter(int(sys.argv[1]))
> counter.start()
>
> C:\FAT32\py>counter.py 5
> 5 .
> 4 . 3 . 2 . 1 . 0

if the last print statement in a program doesn't generate a newline,
the interpreter adds a newline when the main thread exits.

in your case, the main thread exits long before the next thread gets
around to print something:

    5 . [main program ends here]
    4 . 3 . 2 . 1 . 0 [last thread ends here]

to see for yourself, add a print statement or a long sleep to the end
of the main program.

</F>