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我想使用 pygal 绘制随机散乱的点
并在 run.py 中存储一个 svg 文件我尝试使用循环,每个循环 1 次生成一些数据,并为
我的代码分配一个变量:random_walk.py

from random import choice
class RandomWalk():
    def __init__(self, num_points=10240):
        self.num_points = num_points
        self.x_values = [0]
        self.y_values = [0]

    def fill_walk(self):
        while len(self.x_values) < self.num_points:    
            x_direction = choice([1, -1])
            x_distance = choice([0, 1, 2, 3, 4])
            x_step = x_direction * x_distance
            y_direction = choice([1, -1])
            y_distance = choice([0, 1, 2, 3, 4])
            y_step = y_direction * y_distance

            next_x = self.x_values[-1] + x_step
            next_y = self.y_values[-1] + y_step

            self.x_values.append(next_x)
            self.y_values.append(next_y)

运行.py

import pygal
from random_walk import RandomWalk

xy_sjmb = pygal.XY(stroke=False)
xy_sjmb.title = "random rambled"

a, b, c, d = [], [], [], []
all =[a, b, c, d]
for i in range(len(all)):
    rw = RandomWalk()
    rw.fill_walk()    
    ns =[(j, k)  for j, k in (self.x_values, self.y_values) ]
    all[i-1] = ns

xy_sjmb.add('a', a)
xy_sjmb.add('b', b)
xy_sjmb.add('c', c)
xy_sjmb.add('d', d)
xy_sjmb.render_to_file('sjmb.svg')

但有错误:NameError: name 'self' is not defined

4

1 回答 1

1

更改ns =[(j, k) for j, k in (self.x_values, self.y_values) ]ns =[(j, k) for j, k in (rw.x_values, rw.y_values) ]

self用于从该对象内部引用该对象。但是在外部,您需要使用指向它的变量来引用该对象。

于 2017-12-09T09:12:55.620 回答