Error when converting Excel document to pdf using comtypes in Python

Question

I am trying to convert an Excel spreadsheet to PDF using Python and the comtypes package using this code:

import os
import comtypes.client

FORMAT_PDF = 17
S         


        

Answer 1

You need to describe ExportAsFixedFormat(0,outputfile) to save workbook in pdf format. The solution from http://thequickblog.com/convert-an-excel-filexlsx-to-pdf-python/ works for me.

from win32com import client
import win32api
input_file = r'C:\Users\thequickblog\Desktop\Python session 2\tqb_sample.xlsx'
#give your file name with valid path 
output_file = r'C:\Users\thequickblog\Desktop\Python session 2\tqb_sample_output.pdf'
#give valid output file name and path
app = client.DispatchEx("Excel.Application")
app.Interactive = False
app.Visible = False
Workbook = app.Workbooks.Open(input_file)
try:
    Workbook.ActiveSheet.ExportAsFixedFormat(0, output_file)
except Exception as e:
    print("Failed to convert in PDF format.Please confirm environment meets all the requirements  and try again")
    print(str(e))
finally:
    Workbook.Close()
    app.Exit()

Answer 2

Found a solution - this seems to be working:

import os
import comtypes.client

SOURCE_DIR = 'C:/Users/IEUser/Documents/jscript/test/resources/root3'
TARGET_DIR = 'C:/Users/IEUser/Documents/jscript'

app = comtypes.client.CreateObject('Excel.Application')
app.Visible = False

infile = os.path.join(os.path.abspath(SOURCE_DIR), 'spreadsheet1.xlsx')
outfile = os.path.join(os.path.abspath(TARGET_DIR), 'spreadsheet1.pdf')

doc = app.Workbooks.Open(infile)
doc.ExportAsFixedFormat(0, outfile, 1, 0)
doc.Close()

app.Quit()

This link may also be helpful as an inspiration regarding the arguments to the ExportAsFixedFormatfunction: Document.ExportAsFixedFormat Method (although some of the values of arguments have to be modified a bit).