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Formatting entire excel worksheet - Python

Is there to format the entire xlsx font in python without iterating through each cell. And if this is possible , which module perform this?

You should try xlwings. It is very easy to use.
There is this cheat sheet that can help you with the library.
I think a line of code like this is close to what you need:
Range('A1:Z100').api.Font.Size = 20
Hope it helps!

You can read xls files with the help of python module xlrd to install it use the command.
pip install xlrd
Below is the example of how to use xlrd to open spreadsheet in python.
import xlrd
file_location = "your excel spreadsheet file location"
workbook = xlrd.open_workbook(file_location)
sheet = workbook.sheet_by_index(0)
# for printing it row by row
for col in range(sheet.ncols):
print(sheet.cell_value(0, col)) # change 0 to print different rows
For further reading check the link please & for the video guidance click here
I hope it works for you : D

Update .xlsm file values python

I have a .xlsm file as a reference template. I want to update the values of this .xlsm file using python from a .csv file.
template .xlsm ----> Update values using .csv
What has not worked :
I tried using pandas.to_excel method. but the .xlsm file gets corrupted after I write to sheet.
Could someone please point me in the right direction ?

openpyxl supports xlsm file.
from openpyxl import load_workbook
wb2 = load_workbook('test.xlsm', keep_vba=True)
update(wb2, csvfile.csv) # this is where you need to work according to your need.
wb.save('new_document.xlsm')
wb.close()
https://openpyxl.readthedocs.io/en/default/tutorial.html

Maybe to try xlwings, using it something like this?
def update(workbook, csv_file):
ws = workbook.sheets[2]
ws.range('B14').value = 155
from xlwings import Book
wb = Book(r'test.xlsm')
update(wb, csv_file)
wb.save('test1.xlsm')
wb.close()
This is the best tool to update xlsm files since it uses WindowsAPI and macros are triggered in case something is changed. This means, it won't work on Linux.
Of course, update function must do something more meaningful than changing the B14 cell in the 3rd sheet.
For more info, please read http://docs.xlwings.org/en/stable/quickstart.html

Inserting object in excel using Python

I want to insert a Image(object) in MS-Excel Report which i am generating using openpyxl utility. Is there a way to do it using some python utility?

Openpyxl allows you to write images into your Excel files! Here it is in the official documentation.
import openpyxl
wb = openpyxl.Workbook()
ws = wb.worksheets[0]
picture = openpyxl.drawing.Image('/path/to/picture')
picture.anchor(ws.cell('cell to put the image'))
ws.add_image(picture)
wb.save('whatever you want to save the workbook as')
This code of course refers to creating a new workbook and adding the image into it. To add the image to your preexisting workbook you would obviously just load that workbook using load_workbook.

"Worksheet range names does not exist" KeyError in openpyxl

Let me preface this by saying I have tried looking for, and cannot seem to find a similar situation so please don't be too upset if this seems familiar to you. I am using Python 2.7 and openpyxl version 2.2.5 (I need to use 2.7, and used an older module for other reasons.)
I am new to Python and read/write code in general, so I'm testing this on the command line before I implement it:
I created a file, foo.xlsx in the Python27 file directory with some values that I manually entered via Excel.
I then used this simple code on the Python command line to test my code
from openpyxl import load_workbook
wb = load_workbook('foo.xlsx')
sheet_ranges = wb['range names']
It then resulted in the following error:
File "C:\Python27\lib\openpyxl\workbook.workbook.py", line 233 in getitem
raise KeyError("Worksheet {0} does not exist.".format(key))
KeyError: 'Worksheet sheet range names does not exist'
So I thought it had something to do with not importing the entire openpyxl module. I proceeded to do that and run the whole process but it resulted in the same error.
Can someone please let me know what I am doing wrong/how to solve this?
Additional information:
I had successfully written to an empty file before, and then read the values. This gave me the right values for everything EXCEPT what I had written in manually via Excel- the cells that had manual input returned None or Nonetype. The issue seems to be with cells with manual input.
I did hit save on the file before accessing it don't worry
This was in the same directory so I know that it wasn't a matter of location.

The following command does not make sense:
sheet_ranges = wb['range names']
Normally you open a workbook and then access one of the worksheets, the following gives you some examples on how this can be done:
import openpyxl
wb = openpyxl.Workbook()
wb = openpyxl.load_workbook(filename = 'input.xlsx')
# To display all of the available worksheet names
sheets = wb.sheetnames
print sheets
# To work with the first sheet (by name)
ws = wb[sheets[0]]
print ws['A1'].value
# To work with the active sheet
ws = wb.active
print ws['A1'].value
# To work with the active sheet (alternative method)
ws = wb.get_active_sheet()
print ws['A1'].value
If you want to display any named range in the workbook, you can do the following:
print wb.get_named_ranges()

I'm not exactly sure what it is you need to do, but to read Excel spreadsheets into python, I usually use xlrd (which to me was easier to get use to). See example:
import xlrd
workbook = xlrd.open_workbook(in_fname)
worksheet = workbook.sheet_by_index(0)
To write to Excel spreadsheets, I use xlsxwriter:
import xlsxwriter
workbook = xlsxwriter.Workbook(out_fname)
worksheet = workbook.add_worksheet('spreadsheet_name')
Hope this helps.

Python append xls file using only xlwt/xlrd

I am having problems appending issues appending data to an xls file.
Long story short, I am using a program to get some data from something and writing it in an xls file.
If I run the script 10 times, I would like the results to be appended to the same xls file.
My problem is that I am forced to use Python 3.4 and xlutils is not supported, so I cannot use the copy function.
I just have to use xlwt / xlrd. Note, the file cannot be a xlsx.
Is there any way i can do this?

I would look into using openpyxl, which is supported by Python 3.4. An example of appending to a file can be found https://openpyxl.readthedocs.org/en/default/. Please also see: How to append to an existing excel sheet with XLWT in Python. Here is an example that will do it. Assuming you have an Excel sheet called sample.xlsx:
from openpyxl import Workbook, load_workbook
# grab the active worksheet
wb = load_workbook("sample.xlsx")
ws = wb.active
ws.append([3])
# Save the file
wb.save("sample.xlsx")