I am interfacing with Excel files in Python using the xlwings api. Some Excel files I am interacting with have old links which cause a prompt to appear when the file is opened asking if the user would like to update the links. This causes the code to hang indefinitely on the line that opened the book until this prompt is closed by a user. Is there a way to modify the settings of the Excel file so that this prompt will not appear or it will be automatically dismissed without opening the actual file?
I have tried using the xlwings method:
xlwings.App.display_alerts = False
to suppress the prompt, but as far as I can tell this can only be run for an instance of Excel after it has been opened. There are some Excel api's that do not require a file to be open in order to read data like xlrd, but they are not very convenient for reading and copying large amounts of data (Multiple/Entire sheets of data).
The following code demonstrates the issue:
import xlwings as xw
wb = xw.Book(r'C:\Path\To\File\Filename')
print('Done')
On a regular Excel file the code proceeds through and prints "Done" without the need of user interference, but on an Excel file where the "update links" prompt comes up, it will not proceed to the print statement until the prompt is dismissed by a user.
Expanding on your first attempt -- you're not handling an App instance, rather you're trying to assign to the xlwings.App class.
However, it seems that the display_alerts doesn't successfully suppress this alert in xlwings, try this:
import xlwings as xw
app = xw.App(add_book=False)
app.display_alerts = False
wb = app.books.api.Open(fullpath, UpdateLinks=False)
I believe there is an implementation in xlwings to avoid update links messages now. I was able to bypass these alerts by adding the following
app.books.open(fname, update_links=False, read_only=True, ignore_read_only_recommended=True)
You can see these arguments available in the documentation xlwings.Book.open(...)
I presently have 20+ source workbooks that I loop though to extract some rows of data. It was intolerable to respond to the update links prompt of each opened workbook. I tried the other solutions here but none worked for me. After reviewing the cited xlwings docs, this is the solution that worked for me:
for fname in workbook_list:
wb = xw.books.open(fname, update_links = False)
# Extract some data...
wb.close()
My environment is Win10Pro / Python 3.8.1 / pywin32 version: 303 / Excel 365 Subscription / xlwings 0.26.2
Related
I have an API file that takes in dates, and then when the macro is run pulls in data for said date range.
I can run this on a Windows computer without use of Python, however I am automating a data clean up process and would like to be able to run this macro from MacOS.
I am using XLWINGS.
My logic is :
Open the workbook.
Update the date values.
Execute the macro.
Save workbook as a new file.
Close workbook.
Eventually set it on a loop to update itself
Current Code :
import xlwings as xw
start = dt.datetime(2022,2,1)
end = dt.datetime(2022,3,31)
excel_app = xw.App(visible=False)
wb = excel_app.books.open('sheet.xlsm')
sheet = wb.sheets['Start']
sheet.range('E5').value = start
sheet.range('E7').value = end
update = wb.macro("'sheet.xlsm'!Code.update_report")
update()
wb.save('PATH')
wb.close()
I get prompted with no errors, the script opens the workbook, updates the values, then saves it in the new location I defined with the new name.
However when I open the .xlsm file after its run its course - it does not have the update data for the inputted date range. Essentially, the macro does not run.
Other ways I've tried to run the macro (instead of running the macro on the original file, I save the original file once the date range has been updated and then try to execute the macro):
import xlwings as xw
if os.path.exists('sheet.xlsm'):
excel_app = xlwings.App(visible=False)
wb = xw.Book('sheet.xlsm')
app = wb.app
update = app.macro("!Code.update_report")
update()
wb.save()
Still - runs fine, no errors, except it does not execute the macro.
Any help welcomed! Thank you.
I'm trying stream data from Python to an opened excel file. I've been using openpyxl to do this. Here's the code that I've so far,
from openpyxl import load_workbook
wb = load_workbook('some_data.xlsx')
ws = wb['MySheet']
while True:
current_val = some_method_that_gives_data()
ws['A1'].value = current_val
wb.save('some_data.xlsx')
The functionality I'm trying to achieve is to be able to update the excel data in realtime from Python. The problem is updating data this way gives permission error if the file is already open in MS-Excel (but I want to be able to update it while being open in other apps).
I guess this has more to do with file handling at the OS level, but I'm not able to figure out the solution for this issue.
You'll probably laugh at me, but I am sitting on this for two weeks. I'm using python with pandas.
All I want to do, is to put a calculated value in a pre-existing excel file to a specific cell without changing the rest of the file. That's it.
Openpyxl makes my file unusable (means, I can not open because it's "corrupted" or something) or it plainly delets the whole content of the file. Xlsxwriter cannot read or modify pre-existing files. So it has to be pandas.
And for some reason I can't use worksheet = writer.sheets['Sheet1'], because that leads to an "unhandled exception".
Guys. Help.
I tried a bunch of packages but (for a lot of reasons) I ended up using xlwings. You can do pretty much anything with it in python that you can do in Excel.
Documentation link
So with xlwings you'd have:
import xlwings as xw
# open app_excel
app_excel = xw.App(visible = False)
# open excel template
wbk = xw.Book( r'stuff.xlsx' )
# write to a cell
wbk.sheets['Sheet1'].range('B5').value = 15
# save in the same place with the same name or not
wbk.save()
wbk.save( r'things.xlsx' )
# kill the app_excel
app_excel.kill()
del app_excel
Let me know how it goes.
I am interfacing with Excel files in Python using the xlwings api. Some Excel files I am interacting with have old links which cause a prompt to appear when the file is opened asking if the user would like to update the links. This causes the code to hang indefinitely on the line that opened the book until this prompt is closed by a user. Is there a way to modify the settings of the Excel file so that this prompt will not appear or it will be automatically dismissed without opening the actual file?
I have tried using the xlwings method:
xlwings.App.display_alerts = False
to suppress the prompt, but as far as I can tell this can only be run for an instance of Excel after it has been opened. There are some Excel api's that do not require a file to be open in order to read data like xlrd, but they are not very convenient for reading and copying large amounts of data (Multiple/Entire sheets of data).
The following code demonstrates the issue:
import xlwings as xw
wb = xw.Book(r'C:\Path\To\File\Filename')
print('Done')
On a regular Excel file the code proceeds through and prints "Done" without the need of user interference, but on an Excel file where the "update links" prompt comes up, it will not proceed to the print statement until the prompt is dismissed by a user.
Expanding on your first attempt -- you're not handling an App instance, rather you're trying to assign to the xlwings.App class.
However, it seems that the display_alerts doesn't successfully suppress this alert in xlwings, try this:
import xlwings as xw
app = xw.App(add_book=False)
app.display_alerts = False
wb = app.books.api.Open(fullpath, UpdateLinks=False)
I believe there is an implementation in xlwings to avoid update links messages now. I was able to bypass these alerts by adding the following
app.books.open(fname, update_links=False, read_only=True, ignore_read_only_recommended=True)
You can see these arguments available in the documentation xlwings.Book.open(...)
I presently have 20+ source workbooks that I loop though to extract some rows of data. It was intolerable to respond to the update links prompt of each opened workbook. I tried the other solutions here but none worked for me. After reviewing the cited xlwings docs, this is the solution that worked for me:
for fname in workbook_list:
wb = xw.books.open(fname, update_links = False)
# Extract some data...
wb.close()
My environment is Win10Pro / Python 3.8.1 / pywin32 version: 303 / Excel 365 Subscription / xlwings 0.26.2
Using code below, I can get the data to print.
How would switch code to xlrd?
How would modify this code to use a xls file that is already open and visible.
So, file is open first manually, then script runs.
And, gets updated.
and then get pushed into Mysql
import os
from win32com.client import constants, Dispatch
import numpy as np
#----------------------------------------
# get data from excel file
#----------------------------------------
XLS_FILE = "C:\\xtest\\example.xls"
ROW_SPAN = (1, 16)
COL_SPAN = (1, 6)
app = Dispatch("Excel.Application")
app.Visible = True
ws = app.Workbooks.Open(XLS_FILE).Sheets(1)
xldata = [[ws.Cells(row, col).Value
for col in xrange(COL_SPAN[0], COL_SPAN[1])]
for row in xrange(ROW_SPAN[0], ROW_SPAN[1])]
#print xldata
a = np.asarray(list(xldata), dtype='object')
print a
If you mean that you want to modify the current file, I'm 99% sure that is not possible and 100% sure that it is a bad idea. In order to alter a file, you need to have write permissions. Excel creates a file lock to prevent asynchronous and simultaneous editing. If a file is open in Excel, then the only thing which should be modifying that file is... Excel.
If you mean that you want to read the file currently in the editor, then that is possible -- you can often get read access to a file in use, but it is similarly unwise -- if the user hasn't saved, then the user will see one set of data, and you'll have another set of data on disk.
While I'm not a fan of VB, that is a far better bet for this application -- use a macro to insert the data into MySQL directly from Excel. Personally, I would create a user with insert privileges only, and then I would try this tutorial.
If you want to manipulate an already open file, why not use COM?
http://snippets.dzone.com/posts/show/2036
http://oreilly.com/catalog/pythonwin32/chapter/ch12.html