Python3 数字Number Radian 方法

#!/usr/bin/python3
import math

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