CODEWITHSUNDEEP
pythonvbaexcelwin32com
Emkan
Emkan

Reputation: 188

Cannot iterate VBA macros from Python

I am using VBA in conjunction with Python.

I imported the module OS, and for working with excel - openpyxl. The problem occurs when it iterates the function for running the VBA macro from Excel.

import random
from openpyxl import load_workbook
import os, os.path, win32com.client

wbi = load_workbook('Input.xlsm')
wsi = wbi.get_active_sheet()
wbo = load_workbook('Output.xlsx')
wso = wbo.get_active_sheet()

def run_macro(fName, macName, path=os.getcwd()):
    """    
    pre: fName is the name of a valid Excel file with macro macName
    post: fName!macName is run, fName saved and closed
    """
    fName = os.path.join(path, fName)
    xlApp = win32com.client.Dispatch("Excel.Application")
    fTest = xlApp.Workbooks.Open(fName)
    macName = fTest.Name + '!' + macName
    xlApp.Run(macName)
    fTest.Close(1)
    xlApp.Quit()
    xlApp = None

def IBP():
    ibp = wsi.cell('G12')
    ibpv = random.randint(0,45)
    ibp.value = ibpv
    return ibp.value

def BP10():
    bp10 = wsi.cell('G13')
    bpv10 = random.randint(30,50)
    bp10.value = bpv10
    return bp10.value

for n in range(6):
    IBP()
    print IBP()
    BP10()
    run_macro('Input.xlsm','macro1')
    wbo.save('Output.xlsx')

I think that the error is in run_macro('Input.xlsm','macro1') - it cannot iterate.

The output:

Qt: Untested Windows version 6.2 detected!
35
4
Traceback (most recent call last):
  File "C:\Users\User\Desktop\Python Exp\Pr 1.py", line 77, in <module>
    run_macro('Input.xlsm','macro1')
  File "C:\Users\User\Desktop\Python Exp\Pr 1.py", line 18, in run_macro
    fTest = xlApp.Workbooks.Open(fName)
  File "C:\Python27\lib\site-packages\win32com\client\dynamic.py", line 522, in __getattr__
    raise AttributeError("%s.%s" % (self._username_, attr))
AttributeError: Excel.Application.Workbooks

What am I doing wrong?

Upvotes: 4

Views: 1407

Answers (1)

MikeHunter
MikeHunter

Reputation: 4304

I'm not sure this will help, but you can try early binding. Run this script and then try yours again:

import win32com.client

xl = win32com.client.gencache.EnsureDispatch ("Excel.Application")
print xl.__module__

If that does not work, you can alway go back to late binding by hooking to Excel like this: 

xl = win32com.client.dynamic.Dispatch("Excel.Application")

or by simply deleting this folder: C:\Python27\Lib\site-packages\win32com\gen_py\00020813-0000-0000-C000-000000000046x0x1x7

From the error message, it looks like your problem is on the line wb = xlApp.Workbooks.Open(fname). If the Python hooks to the Excel com servers were working correctly, then that line would not raise the exception that it did. I don't see anything wrong with the code where the exception occured. Sometimes early binding helps in situations like this.

good luck

Mike

Upvotes: 1

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