In this post we will be creating a Python script that will change font to italic within an existing Excel spreadsheet using the openpyxl library. Openpyxl is a library that allows us to interact with Excel files in Python. It provides a range of tools for reading, writing, manipulating, and formatting Excel data. This makes it a useful tool for data analysis and reporting tasks.
See the sample of Python code below where we use the openpyxl library to change font to italic for particular cells within an already existing Excel spreadsheet. We start by loading our existing Excel file called
example.xlsx and assign it to a variable named
workbook. Next we retrieve the active worksheet from the workbook. We then select cell
A1 of the
worksheet and assign it to the variable
cell. Now we can apply some formatting to the
cell using the
Font class. In particular we make the font italic by passing
True as an argument to the
italic parameter of the
Font constructor. Finally the changes made to the Excel file are saved using the
import openpyxl from openpyxl.styles import Font workbook = openpyxl.load_workbook('example.xlsx') worksheet = workbook.active cell = worksheet['A1'] cell.font = Font(italic=True) workbook.save('example.xlsx')
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