史坦利Stanley程式Maker的部落格

這篇是使用Win32Com 模組去操控Excel, 包括開啓workbook, worksheet 和 cell operations。

如果你正在學習如何操控Excel,小編是認為利用openpyxl的方式較簡潔，直覺和簡單化，不過利用Win32Com也是可以的

請參考下面的範例說明

Open Excel, Add a Workbook

import win32com.client as win32
excel = win32.gencache.EnsureDispatch('Excel.Application')
wb = excel.Workbooks.Add()
wb.SaveAs('c:\\tmp\\add_a_workbook.xlsx')
excel.Application.Quit()

Open an Existing Workbook

import win32com.client as win32
excel = win32.gencache.EnsureDispatch('Excel.Application')
wb = excel.Workbooks.Open('c:\\tmp\\add_a_workbook.xlsx')
excel.Visible = True

Add a Worksheet  (有中文-第一行要加)

# -*- coding: big5 -*-
import win32com.client as win32
excel = win32.gencache.EnsureDispatch('Excel.Application')
wb = excel.Workbooks.Add()
ws = wb.Worksheets.Add()
ws.Name = "圖一"
wb.SaveAs('c:\\tmp\\add_a_worksheet.xlsx')
excel.Application.Quit()

ell operations 

Ranges and Offsets

import win32com.client as win32
excel = win32.gencache.EnsureDispatch('Excel.Application')
wb = excel.Workbooks.Add()
ws = wb.Worksheets.Add()
ws.Name = "MyNewSheet"
ws.Cells(1,1).Value = "Cell A1"
ws.Cells(1,1).Offset(2,4).Value = "Cell D2"
ws.Range("A2").Value = "Cell A2"
ws.Range("A3:B4").Value = "A3:B4"
ws.Range("A6:B7,A9:B10").Value = "A6:B7,A9:B10"
wb.SaveAs('ranges_and_offsets.xlsx')
excel.Application.Quit()

Autofill Cell Contents

import win32com.client as win32
excel = win32.gencache.EnsureDispatch('Excel.Application')
wb = excel.Workbooks.Add()
ws = wb.Worksheets.Add()
ws.Name = "MyNewSheet"
ws.Range("A1").Value = 1
ws.Range("A2").Value = 2
ws.Range("A1:A2").AutoFill(ws.Range("A1:A10"),win32.constants.xlFillDefault)
wb.SaveAs('autofill_cells.xlsx')
excel.Application.Quit()

Cell Color

import win32com.client as win32
excel = win32.gencache.EnsureDispatch('Excel.Application')
wb = excel.Workbooks.Add()
ws = wb.Worksheets.Add()
ws.Name = "MyNewSheet"
for i in range (1,21):
    ws.Cells(i,1).Value = i
    ws.Cells(i,1).Interior.ColorIndex = i
wb.SaveAs('cell_color.xlsx')
excel.Application.Quit()

Column Formatting

import win32com.client as win32
excel = win32.gencache.EnsureDispatch('Excel.Application')
wb = excel.Workbooks.Add()
ws = wb.Worksheets.Add()
ws.Name = "MyNewSheet"
ws.Range("A1:A10").Value = "A"
ws.Range("B1:B10").Value = "This is a very long line of text"
ws.Columns(1).ColumnWidth = 1
ws.Range("B:B").ColumnWidth = 27
wb.SaveAs('column_widths.xlsx')
excel.Application.Quit()

Format Worksheet Cells

import win32com.client as win32
excel = win32.gencache.EnsureDispatch('Excel.Application')
wb = excel.Workbooks.Add()
ws = wb.Worksheets.Add()
ws.Name = "MyNewSheet"

for i,font in enumerate(["Arial","Courier New","Garamond","Georgia","Verdana"]):
    ws.Range(ws.Cells(i+1,1),ws.Cells(i+1,2)).Value = [font,i+i]
    ws.Range(ws.Cells(i+1,1),ws.Cells(i+1,2)).Font.Name = font
    ws.Range(ws.Cells(i+1,1),ws.Cells(i+1,2)).Font.Size = 12+i

ws.Range("A1:A5").HorizontalAlignment = win32.constants.xlRight
ws.Range("B1:B5").NumberFormat = "$###,##0.00"
ws.Columns.AutoFit()
wb.SaveAs('format_cells.xlsx')
excel.Application.Quit()

Setting Row Height

import win32com.client as win32
excel = win32.gencache.EnsureDispatch('Excel.Application')
wb = excel.Workbooks.Add()
ws = wb.Worksheets.Add()
ws.Name = "MyNewSheet"

ws.Range("A1:A2").Value = "1 line"
ws.Range("B1:B2").Value = "Two\nlines"
ws.Range("C1:C2").Value = "Three\nlines\nhere"
ws.Range("D1:D2").Value = "This\nis\nfour\nlines"
ws.Rows(1).RowHeight = 60
ws.Range("2:2").RowHeight = 120
ws.Rows(1).VerticalAlignment = win32.constants.xlCenter
ws.Range("2:2").VerticalAlignment = win32.constants.xlCenter

# Alternately, you can autofit all rows in the worksheet
# ws.Rows.AutoFit()

wb.SaveAs('row_height.xlsx')
excel.Application.Quit())
excel.Application.Quit()

參考資料 

http://pythonexcels.com/python-excel-mini-cookbook/

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