python3和pywin32關閉excel

Question

我在使用Dispatch後遇到了關閉excel的問題。

import openpyxl 
import os 
from win32com import client 



class CTAutomation: 

    def __init__(self, file): 
     self.invoice = xl.load_workbook(os.getcwd() + "\Templates\ctrates.xlsx") 
     self.xlTemplate = xl.load_workbook(os.getcwd() + "\Templates\invoiceTemplate.xlsx") 
     self.vpc = xl.load_workbook(os.getcwd() + "\Templates\Vpc.xlsx") 
     self.file = file 

    def invoice_make(self): 
     self.xlApp = client.Dispatch("Excel.Application") 
     self.xlbook = self.xlApp.Workbooks.Open(os.getcwd() + '\TestFiles\\' + self.file) 
     self.ws = self.xlbook.Worksheets[0] 
     self.ws.Visible = 1 
     self.ws.ExportAsFixedFormat(0, os.getcwd() + "\complitedpdf\\" + self.file + ".pdf") 
     self.quit() 

    def quit(self): 
     self.xlbook.Close() 
     self.xlApp.Quit() 

    def xlformater(self): 
     return None 

def main(): 
    pwd = os.listdir(os.getcwd() + "\TestFiles") 
    for file in pwd: 
     CTAutomation(file.strip(".xlsx")).invoice_make() 

if __name__ == "__main__": 
    main() 

這一切都運行良好，直到這部分。我在論壇上發現了一些關於這個主題的帖子，但是我覺得我仍然錯過了一些關閉應用程序的例子， .xlsx and xls(Latest Versions) to pdf using python示例

一些建議將不勝感激。

Answer 1

本質上它是你的類對象在內存中堅持。考慮使用with()將進程封裝在上下文管理器中。並在上下文中調用invoice_make()。

此外，您有一個不正確的Excel方法通過用方括號索引工作簿零。

最後，考慮使用os.path.join()避開或轉發斜槓並使用try/except塊來捕獲COM異常並從內存中正確釋放對象。

import openpyxl as xl 
import os 
from win32com import client 

cwd = os.getcwd() 

class CTAutomation: 

    def __init__(self): 
     self.invoice = xl.load_workbook(os.path.join(cwd, "Templates", "ctrates.xlsx")) 
     self.xlTemplate = xl.load_workbook(os.path.join(cwd, "Templates", "invoiceTemplate.xlsx")) 
     self.vpc = xl.load_workbook(os.path.join(cwd, "Templates", "Vpc.xlsx")) 

    def invoice_make(self, file): 
     try: 
      self.xlApp = client.Dispatch("Excel.Application") 
      self.xlbook = self.xlApp.Workbooks.Open(os.path.join(cwd, "TestFiles", file)) 
      self.ws = self.xlbook.Worksheets(1)  # USE PARENTHESES (NOT BRACKETS AND NON-ZERO INDEX) 
      #self.ws.Visible = 1      # KEEP PROCESS IN BACKGROUND 
      self.ws.ExportAsFixedFormat(0, os.path.join(cwd, "complitedpdf", file.replace(".xlsx",".pdf"))) 
      self.xlbook.Close(False) 
      self.xlApp.Quit() 

     except Exception as e: 
      print(e) 

     finally: 
      self.ws = None       # RELEASE EXCEL OBJS FROM MEMORY 
      self.xlbook = None 
      self.xlApp = None 

    def xlformater(self): 
     return None 

    def __enter__(self): 
     return self         # BOUND TO as IN with() 

    def __exit__(self, *err): 
     return None 

def main(): 
    pwd = os.listdir(os.path.join(cwd, "TestFiles")) 

    with CTAutomation() as obj:      # CONTEXT MANAGER 
     for file in pwd: 
      print(file) 
      obj.invoice_make(file) 

if __name__ == "__main__": 
    main()