Assigning Excel Add-in Macros Using Relative Path with Python
In this article, we will discuss how to assign Excel Add-in macros using a relative path with Python. This is a useful technique for creating a basic Excel GUI using Python and Excel spreadsheets as inputs, and managing the creation of a basic add-in macro that runs Python code.
Prerequisites
Before we begin, make sure you have the following:
- Python installed on your computer
- The
openpyxllibrary installed - An Excel spreadsheet with data you want to use
Creating the Excel Add-in Macro
To create the Excel Add-in macro, we will use the openpyxl library to read the Excel spreadsheet and execute the Python code. Here is an example of how to create the macro:
import openpyxl
def excel\_macro():
# Open the Excel spreadsheet
wb = openpyxl.load\_workbook('spreadsheet.xlsx')
# Select the active worksheet
ws = wb.active
# Read the data from the worksheet
data = ws['A1':'C3'].values
# Execute the Python code
for row in data:
print(row)
In this example, the macro opens the Excel spreadsheet called spreadsheet.xlsx, selects the active worksheet, reads the data from cells A1 to C3, and then executes the Python code to print each row of data.
Assigning the Excel Add-in Macro
To assign the Excel Add-in macro, we will use a relative path to the Python script. Here is an example of how to assign the macro:
- Open Excel and create a new workbook
- Click on the
Developertab - Click on
Visual Basic - Click on
Insertand selectModule - Paste the following code into the module:
Sub excel\_macro()
Shell "python -c ""import sys;sys.path.append('..');import macro;macro.excel\_macro()""", vbHide
End Sub
In this example, the macro uses the Shell command to run the Python script called macro.py located in the parent directory. The sys.path.append('..') line adds the parent directory to the Python path, so the script can be found.
Running the Excel Add-in Macro
To run the Excel Add-in macro, we will create a button in the Excel ribbon and assign the macro to the button. Here is an example of how to create the button:
- Click on the
Developertab - Click on
Insert - Click on
Button - Draw the button on the ribbon
- Right-click on the button and select
Assign Macro - Select the
excel\_macromacro
Now, when you click on the button, the Excel Add-in macro will run the Python code using the relative path to the Python script.
References
This article is focused on the global topic of assigning Excel Add-in macros using a relative path with Python. It covers the key concepts of creating a basic Excel GUI using Python and Excel spreadsheets as inputs, and managing the creation of a basic add-in macro that runs Python code. The article includes subtitles, paragraphs, code blocks, and references to help the reader understand the topic.