python如何读写Excel

python如何读写excel

1.安装两个库

pip install xlrd xlwt
读取excel:

2.如何读取excel

import xlrd

book = xlrd.open_workbook('demo.xlsx')

sheet = book.sheet_by_index(0)
#获取有多少行多少列
print(sheet.nrows)   #4
print(sheet.ncols)   #4

print(sheet.cell(0,0))          #text:'姓名'
print(sheet.cell_value(0,0))    #姓名

print(sheet.row_values(0))      #['姓名', '语文', '数学', '外语']
print(sheet.row_values(1,1))    #[95.0, 99.0, 96.0]

3.如何读写excel

求分数的总和
import xlrd, xlwt

rbook = xlrd.open_workbook('demo.xlsx')
rsheet = rbook.sheet_by_index(0)

k = rsheet.ncols
#在最后添加一列 ‘总分’
rsheet.put_cell(0,k,xlrd.XL_CELL_TEXT, '总分', None)

for i in range(1,rsheet.nrows):
    #求分数总和
    t = sum(rsheet.row_values(i, 1))
    rsheet.put_cell(i,k,xlrd.XL_CELL_NUMBER,t,None)

wbook = xlwt.Workbook()
wsheet = wbook.add_sheet(rsheet.name)

for i in range(rsheet.nrows):
    for j in range(rsheet.ncols):
        wsheet.write(i,j,rsheet.cell_value(i,j))

wbook.save('out.xlsx')

结果: