Python多线程编程的输出格式问题？

Question

今天在学习多线程编程，由于多个线程是同时启动的，所以输出也出现在了同一行，怎样才能换行输出呢？
输出结果是这样的：

*** MULTIPLE THREADS
startingstartingstarting   fibfacsum   at:at:at:   Tue Dec 08 22:30:43 2015Tue Dec 08 22:30:43 2015Tue Dec 08 22:30:43 2015


facsum  finished at:finished at:  Tue Dec 08 22:30:44 2015Tue Dec 08 22:30:44 2015

我想要的结果是这样的：

starting  fib    at: Sat Nov 22 09:51:39 2014

starting  fac    at:Sat Nov 22 09:51:39 2014

starting  sum   at:Sat Nov 22 09:51:39 2014

那我应该怎样做呢？

Answer 1

First of all, thank you for your answers. However, these methods are still not clear to me, a Python beginner.
I solved this problem using other methods.
I thought that the switching between threads is an alternating loop in which one thread executes a few sentences and the other thread executes a few sentences again, and one sentence will not be interrupted.
The original mistake was that I wrote the output statement in this form:

print 'starting', funcs[i].__name__, 'at:',\
    ctime()

In fact, in Python’s view, this is not a statement, but the sum of several statements:

print 'starting',
print funcs[i].__name__,
print 'at:',
print ctime()

In this case, the threads will interrupt each other's output, so I changed the output statement and replaced it with this:

print 'starting %s at: %s\n' % (funcs[i].__name__, ctime()),

In this case, the output will be normal.

Answer 2

Add a lock to the output statement.

Answer 3

logging

Answer 4

Each thread puts the content that needs to be output into Queue(), and specifically starts a thread to read data from Queue() and output it to the screen.