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', '26'],['wuxia', '25']]
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