Python特殊方法：__repr__

import random

class Point(object):
    def __init__(self, dist_from_origin, weight):
        self.dist = dist_from_origin
        self.weight = weight

    def __repr__(self):
        return "Point dist: %f; weight: %f" % (self.dist, self.weight)

def getPointList(numPoints, maxDist):
    l = []
    n = 0

    while n <= numPoints:
        dist = random.random()
        random.seed()
        weight = random.uniform(0.01, 0.1)

        if dist <= maxDist:
            l.append(Point(dist, weight))
            n += 1

    return l

print(getPointList(100, 0.17))

import random

class Point(object):
    def __init__(self, dist_from_origin, weight):
        self.dist = dist_from_origin
        self.weight = weight

    def __repr__(self):
        return "Point dist: %f; weight: %f" % (self.dist, self.weight)

@measure_time
def getPointList(numPoints, maxDist):
    l = []
    n = 0

    while n <= numPoints:
        dist = random.random()
        random.seed()
        weight = random.uniform(0.01, 0.1)

        if dist <= maxDist:
            l.append(Point(dist, weight))
            n += 1

    return l

@measure_time
def pointGenerator(numPoints, maxDist):
    n = 0

    while n <= numPoints:
        dist = random.random()
        random.seed()
        weight = random.uniform(0.01, 0.1)

        if dist <= maxDist:
            n += 1
            yield Point(dist, weight)

print("List: ", getPointList(1000, 0.17))
print("Generator: ", pointGenerator(1000, 0.17))