python使用openpyxl庫修改excel表格數(shù)據(jù)方法

今天小編就為大家分享一篇python使用openpyxl庫修改excel表格數(shù)據(jù)方法，具有很好的參考價值，希望對大家有所幫助。一起跟隨小編過來看看吧
1、openpyxl庫可以讀寫xlsx格式的文件，對于xls舊格式的文件只能用xlrd讀，xlwt寫來完成了。
簡單封裝類：    
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:圖表名
         pos:圖表位置
         width:圖表寬度
         height:圖表高度
    '''
    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)
簡單使用：
1、新建excel文件處理    
wb = Workbook()#創(chuàng)建工作簿
ws = wb.active#激活工作表
ws1 = wb.create_sheet("Mysheet")#創(chuàng)建mysheet表
ws.title = "New Title"#表明改為New Title
ws.sheet_properties.tabColor = "1072BA"#顏色
ws['A4'] = 4#賦值
d = ws.cell(row=4, column=2, value=10)#賦值
cell_range = ws['A1':'C2']#選擇單元格區(qū)域
wb.save('test.xlsx')#保存
2、已有excel文件的處理
a、修改excel數(shù)據(jù)    
wr = Write_excel('d:\demo.xlsx')
wr.write('A2','hello')

b、合并單元格    
wr.merge('A1:B3')

c、單元格加入樣式，如字體，顏色等屬性

單元格B2設(shè)置宋體，14號，紅色，自動換行，水平居中，垂直居中    
font = Font(name=u'宋體', size=14, color=RED, bold=True)
align = Alignment(horizontal='center', vertical='center')
wr.cellstyle('B2', font, align)

d、創(chuàng)建3d柱狀圖    
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)

可以創(chuàng)建3d柱狀和折線圖表，挺好用的。