python使用openpyxl库修改excel表格数据方法

1、openpyxl库可以读写xlsx格式的文件，对于xls旧格式的文件只能用xlrd读，xlwt写来完成了。

简单封装类：

from openpyxl import load_workbook
from openpyxl import Workbook
from openpyxl.chart import BarChart, Series, Reference, BarChart3D
from openpyxl.styles import Color, Font, Alignment
from openpyxl.styles.colors import BLUE, RED, GREEN, YELLOW
class Write_excel(object):
 def __init__(self,filename):
 self.filename = filename
 self.wb = load_workbook(self.filename)
 self.ws = self.wb.active
 def write(self, coord, value):
 # eg: coord:A1
 self.ws.cell(coord).value = value
 self.wb.save(self.filename)
 def merge(self, rangstring):
 # eg: rangstring:A1:E1
 self.ws.merge_cells(rangstring)
 self.wb.save(self.filename)
 def cellstyle(self, coord, font, align):
 cell = self.ws.cell(coord)
 cell.font = font
 cell.alignment = align
 def makechart(self, title, pos, width, height, col1, row1, col2, row2, col3, row3, row4):
 ''':param title:图表名
 pos:图表位置
 width:图表宽度
 height:图表高度
 '''
 data = Reference(self.ws, min_col=col1, min_row=row1, max_col=col2, max_row=row2)
 cat = Reference(self.ws, min_col=col3, min_row=row3, max_row=row4)
 chart = BarChart3D()
 chart.title = title
 chart.width = width
 chart.height = height
 chart.add_data(data=data, titles_from_data=True)
 chart.set_categories(cat)
 self.ws.add_chart(chart, pos)
 self.wb.save(self.filename)

简单使用：

1、新建excel文件处理

wb = Workbook()#创建工作簿 
ws = wb.active#激活工作表 
ws1 = wb.create_sheet("Mysheet")#创建mysheet表 
ws.title = "New Title"#表明改为New Title 
ws.sheet_properties.tabColor = "1072BA"#颜色 
ws['A4'] = 4#赋值 
d = ws.cell(row=4, column=2, value=10)#赋值 
cell_range = ws['A1':'C2']#选择单元格区域 
wb.save('test.xlsx')#保存

2、已有excel文件的处理

a、修改excel数据

wr = Write_excel('d:demo.xlsx') 
wr.write('A2','hello')

b、合并单元格

wr.merge('A1:B3')

c、单元格加入样式，如字体，颜色等属性

单元格B2设置宋体，14号，红色，自动换行，水平居中，垂直居中

font = Font(name=u'宋体', size=14, color=RED, bold=True)
align = Alignment(horizontal='center', vertical='center')
wr.cellstyle('B2', font, align)

d、创建3d柱状图

rows = [ 
 (None, 2013, 2014), 
 ("Apples", 5, 4), 
 ("Oranges", 6, 2), 
 ("Pears", 8, 3) 
] 
 
for row in rows: 
 ws.append(row) 
 
wr.makechart(u"3D Bar Chart", 'E5', 12.5, 7, 2, 1, 3, 4, 1, 2, 4)

可以创建3d柱状和折线图表，挺好用的。