Thomas会写字

最近发现numpy的random用法有很多，不注意很容易混淆，今天参考几个博客内容整理了一下。numpy.random.randintlow、high、size三个参数。默认high是None,如果只有low，那范围就是[0,low)。如果有high，范围就是[low,high)。>>> np.random.randint(2, size=10)array([1, 0, 0, 0, 1, 1, 0, 0, 1, 0])>>> np.random.randin

cmap常用于改变绘制风格，如黑白gray，翠绿色virdidis一、问题使用plt.imshow时常用不同的颜色，如plt.imshow(images, cmap=plt.get_cmap(‘gray_r’))是白底黑字的import numpy as npimport matplotlib.pyplot as pltx = np.array([0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0

name='test1234你好啊'print(f'Hello={name}')Hello=test1234你好啊print(f'Hello={name.upper()}')Hello=TEST1234你好啊d={'id':1,'name':'wym'}print(f'user[{d["id"]}]')user[1]name = 'World'print('Hello {%s}' %name)Hello {World}print('Hello %s' %name)Hel...