python3学习（十一）——excel读、写、修改

import xlrd

book = xlrd.open_workbook('金牛座.xls')
sheet = book.sheet_by_index(0)
#sheet = book.sheet_by_name('sheet1')
print(sheet.nrows) #excel里面有多少行
print(sheet.ncols)  #excel中有多少列
print(sheet.cell(0,0).value)#获取指定单元格的内容
print(sheet.cell(0,1).value)
#获取整行整列的内容，将获取到的内容存到list里
print(sheet.row_values(1))
print(sheet.col_values(1))

for i in range(sheet.nrows):#循环获取每行的内容
    print(sheet.row_values(i))

import xlwt #只能写excel
import xlrd  #只能读excel
import xlutils #修改excel！重要！

#写excel
book = xlwt.Workbook()
sheet = book.add_sheet('sheet1')
sheet.write(0,0,'id') #指定行和列写内容
sheet.write(0,1,'username')
sheet.write(0,2,'password')

sheet.write(1,0,'1')
sheet.write(1,1,'linhuizhen')
sheet.write(1,2,'123456')
####################################
stus = [
    [1,'njf','1234'],
    [2,'xiaojun','1234'],
    [3,'hailong','1234'],
    [4,'xiaohei','1234'],
    [5,'xiaohei','1234'],
    [6,'xiaohei','1234'],
    [7,'xiaohei','1234'],
    [8,'xiaohei','1234'],
    [9,'xiaohei','1234'],
]
line = 0#控制的是行
for stu in stus:    #外面的循环控制 行
    #stu = [1,'njf','1234']
    col = 0  # 控制列
    for s in stu:   #内部循环控制 列
        #0行 0列  1
        #0行 1列  njf
        #0行 2列  1234
        sheet.write(line,col,s)
        col += 1
    line += 1
book.save('stu.xls')#只能用.xls结尾


'''
#双重循环，循环了5*10=50次
for i in range(5）：
    for j in range(10):
        print('haha')
'''

#修改excel很重要！与xlrd配合用
import xlutils
import xlrd
from xlutils import copy  #从xlutils中导入copy这个功能
book = xlrd.open_workbook('stu.xls')
#先用xlrd打开一个excel
new_book = copy.copy(book)
#然后用xlutils里面的copy功能，复制一个excel
sheet = new_book.get_sheet(0)#获取sheet页
sheet.write(0,1,'test')
sheet.write(1,1,'test2')
new_book.save('stu.xls')