常用

 1 # coding=utf-8-sig 
 2 
 3 
 4 #获取操作文件路径
 5 import os,sys
 6 file_folder = sys.argv[1]
 7 
 8 #文件生成到桌面
 9 import sys,os
10 desktop_path = os.path.join(os.path.expanduser('~'),"Desktop/")
11 
12 #时间格式
13 import datetime
14 TIME2 = datetime.datetime.now().strftime("%Y-%m-%d-%H-%M-%S")
15 
16 # 生成一组随机数字
17 import random
18 y = [random.randint(20,35) for i in range(120)]
19 
20 # 生成一组伪随机数字
21 import numpy as np
22 np.random.seed(10)
23 t = np.random.randint(0,20,(3,4))
24 print(t)
25 
26 #设置字体 中文显示
27 from matplotlib import pyplot as plt
28 from matplotlib import font_manager
29 my_font = font_manager.FontProperties(fname="/System/Library/Fonts/Hiragino Sans GB.ttc")
30 plt.title("饼图示例-8月份支出",fontproperties=my_font)
31 
32 # numpy 多维转为一维
33 import numpy as np
34 t1 = np.array([[[1,2,3],[4,5,6]],[[7,8,9],[10,11,12]]])
35 t2 = t1.flaten()
36 print(t2.share)
原文地址:https://www.cnblogs.com/v113/p/14528096.html