python的array是什么意思_[：，：]在NumPy数组上是什么意思
很抱歉這個愚蠢的問題。
我在PHP上編程，但在Python上找到了一些不錯的代碼，想在PHP上“重新創建”它。
但我對這條線很失望self.h = -0.1
self.activity = numpy.zeros((512, 512)) + self.h
self.activity[:, :] = self.h
但我不明白[:, :]
卑鄙。
此外，我不能“谷歌它”。
完整代碼import math
import numpy
import pygame
from scipy.misc import imsave
from scipy.ndimage.filters import gaussian_filter
class AmariModel(object):
def __init__(self, size):
self.h = -0.1
self.k = 0.05
self.K = 0.125
self.m = 0.025
self.M = 0.065
self.stimulus = -self.h * numpy.random.random(size)
self.activity = numpy.zeros(size) + self.h
self.excitement = numpy.zeros(size)
self.inhibition = numpy.zeros(size)
def stimulate(self):
self.activity[:, :] = self.activity > 0
sigma = 1 / math.sqrt(2 * self.k)
gaussian_filter(self.activity, sigma, 0, self.excitement, "wrap")
self.excitement *= self.K * math.pi / self.k
sigma = 1 / math.sqrt(2 * self.m)
gaussian_filter(self.activity, sigma, 0, self.inhibition, "wrap")
self.inhibition *= self.M * math.pi / self.m
self.activity[:, :] = self.h
self.activity[:, :] += self.excitement
self.activity[:, :] -= self.inhibition
self.activity[:, :] += self.stimulus
class AmariMazeGenerator(object):
def __init__(self, size):
self.model = AmariModel(size)
pygame.init()
self.display = pygame.display.set_mode(size, 0)
pygame.display.set_caption("Amari Maze Generator")
def run(self):
pixels = pygame.surfarray.pixels3d(self.display)
index = 0
running = True
while running:
self.model.stimulate()
pixels[:, :, :] = (255 * (self.model.activity > 0))[:, :, None]
pygame.display.flip()
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
elif event.type == pygame.KEYDOWN:
if event.key == pygame.K_ESCAPE:
running = False
elif event.key == pygame.K_s:
imsave("{0:04d}.png".format(index), pixels[:, :, 0])
index = index + 1
elif event.type == pygame.MOUSEBUTTONDOWN:
position = pygame.mouse.get_pos()
self.model.activity[position] = 1
pygame.quit()
def main():
generator = AmariMazeGenerator((512, 512))
generator.run()
if __name__ == "__main__":
main()
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