题目应该考察的是类的使用定义啥的
class Point:
def __init__(self, x, y, z):
self.x = x
self.y = y
self.z = z
def distance(p1, p2):
return ((p1.x - p2.x) ** 2 + (p1.y - p2.y) ** 2 + (p1.z - p2.z) ** 2) ** 0.5
p1, p2 = Point(3, 4, 5), Point(5, 12, 13)
print distance(p1, p2)
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