1 # -*- coding:UTF-8 -*- 2 __author__ = ‘Administrator‘ 3  4 import csv 5 import cv2 6 import sys 7 filename = ‘F:/台湾机器学习/hw0_data.dat‘ 8 ufilename = unicode(filename , "utf8")    #这一块主要是因为汉字路径 也就是python调用open打开文件时，其路径必须要转换为utf-8格式  9 10 list=[]11 row=012 colum=0;13 with open(ufilename, ‘r‘) as f:14     data = http://www.mamicode.com/f.readlines()  #dat中所有字符串读入data15     for line in data:16         odom = line.split()        #将单个数据分隔开存好17         colum=len(odom)18         numbers_float = map(float, odom) #转化为浮点数19         list.append(numbers_float)20         # print numbers_float21         row=row+122 23 print("原始数据是：{0}行 ：{1}列 的数据".format(row, colum))24 index = int(raw_input("请输入要排序的列号（范围为1到 {0}）:\n".format(colum-1)))25 resultlist =[]26 if index >0 and index < colum+1 :27     list.sort(key=lambda x: x[index-1], reverse=False) #排序 按照第infex个 顺序排列28     print(list)29     print(list[0])30     for i in range(row):31         print(list[i][index-1])32         resultlist.append(list[i][index-1])33     csvfile = file(‘E:\\csvtest.csv‘, ‘wb‘)   #最终的数据保存为一行，以逗号隔开，所以保存为csv格式了34     writer = csv.writer(csvfile)35     writer.writerow(resultlist)36     csvfile.close()37 else:38     print ‘输入错误，请重新输出序列‘

 1 # -*- coding:UTF-8 -*- 2 __author__ = ‘Administrator‘ 3  4 import csv 5 import cv2 6 import sys 7  8  9 10 imagename = ‘F:/台湾机器学习/Lena.png‘11 img = cv2.imread(imagename.decode(‘utf-8‘).encode(‘gbk‘))  # 主要是汉字路径比较坑！12 cv2.namedWindow("Image") 13 cv2.imshow("Image", img)14 cv2.flip(img,-1,img)15 cv2.namedWindow("NewImage")16 cv2.imshow("NewImage", img)17 cv2.imwrite("e:\\newlena.png",img)18 cv2.waitKey(0)