Python3的学习笔记1：csv文件的相关操作

            import
             csv

            #
            打开csv文件
allElectronicsData = open("AllElectronics.csv","r",encoding=‘utf-8‘)

            #
            按行读取文件
reader = csv.reader(allElectronicsData)

            #
            读取第一行的表格title
headers = next(reader)

            #
            Python2中的写法
headers = reader.next()

            #
            将scv表格文件中的每一行元素转成一个字典；
            
#
            并将所有字典合在一起变为列表
featureList = []
for row in reader:
    rowDict = {}
    for i in range(1,len(row)):
        rowDict[headers[i]] = row[i]
    featureList.append(rowDict)
print("每个用户的信息列表字典:n",featureList)

            #
            读取csv表格中某一列的数据
labelList = []
column = 3            #读取第几列的数据for rows in reader:
    labelList.append(rows[3-1])
print("第%s列数据"%column,labelList)

            #
            读取某一行
line = 3           #读取第几行for i,row in enumerate(reader):
    if i+1==line:
        print(row)