Python 数字Number degrees() 方法

#!/usr/bin/python

import math

print "degrees(3) : ",  math.degrees(3)
print "degrees(-3) : ",  math.degrees(-3)
print "degrees(0) : ",  math.degrees(0)
print "degrees(math.pi) : ",  math.degrees(math.pi)
print "degrees(math.pi/2) : ",  math.degrees(math.pi/2)
print "degrees(math.pi/4) : ",  math.degrees(math.pi/4)