本文实例讲述了Python实现求最大公约数及判断素数的方法。分享给大家供大家参考。具体实现方法如下：
#!/usr/bin/env python
def showMaxFactor(num):
count = num / 2
while count > 1:
if num % count == 0:
print 'largest factor of %d is %d' % (num, count)
break #break跳出时会跳出下面的else语句
count -= 1
else:
print num, is prime
