python读写操作csv及excle文件

1、python读写csv文件

 import csv
 
 #读取csv文件内容方法1
 csv_file = csv.reader(open('testdata.csv','r'))
 next(csv_file, None)    #skip the headers
 for user in csv_file:
     print(user)
 
 #读取csv文件内容方法2
 with open('testdata.csv', 'r') as csv_file:
     reader = csv.reader(csv_file)
     next(csv_file, None)
     for user in reader:
         print(user)
 
 #从字典写入csv文件
 dic = {'fengju':25, 'wuxia':26}
 csv_file = open('testdata1.csv', 'w', newline='')
 writer = csv.writer(csv_file)
 for key in dic:
     writer.writerow([key, dic[key]])
 csv_file.close()   #close CSV file
 
 csv_file1 = csv.reader(open('testdata1.csv','r'))
 for user in csv_file1:
     print(user)

2、python读写excle文件

　需要先用python pip命令安装xlrd , xlwt库~

 import xlrd, xlwt   #xlwt只能写入xls文件
 
 #读取xlsx文件内容
 rows = []   #create an empty list to store rows
 book = xlrd.open_workbook('testdata.xlsx')  #open the Excel spreadsheet as workbook
 sheet = book.sheet_by_index(0)    #get the first sheet
 for user in range(1, sheet.nrows):  #iterate 1 to maxrows
     rows.append(list(sheet.row_values(user, 0, sheet.ncols)))  #iterate through the sheet and get data from rows in list
 print(rows)
 
 #写入xls文件
 rows1 = [['Name', 'Age'],['fengju', ''],['wuxia', '']]
 book1 = xlwt.Workbook()   #create new book1 excle
 sheet1 = book1.add_sheet('user')   #create new sheet
 for i in range(0, 3):
     for j in range(0, len(rows1[i])):
         sheet1.write(i, j, rows1[i][j])
 book1.save('testdata1.xls')   #sava as testdata1.xls