How to read and write excel files in python using openpyxl

reading and writing excel files in python can be done using the `openpyxl` library. this library allows you to interact with excel files and perform various operations such as reading data from existing excel files, creating new excel files, and modifying existing excel files.

here is a step-by-step tutorial on how to read and write excel files in python using `openpyxl`:

### step 1: install openpyxl
if you haven't installed the `openpyxl` library yet, you can install it using pip:

### step 2: reading excel file
to read data from an existing excel file, you can use the following code snippet:

### step 3: writing to excel file
to create a new excel file and write data into it, you can use the following code snippet:

### code explanation:
- we first import the `openpyxl` library.
- we can access cell values using sheet indexing or iterate through rows using `iter_rows`.
- we can write data to a cell using sheet indexing and save the workbook using `save` method.

by following these steps, you can easily read and write excel files in python using the `openpyxl` library.

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#python excel module
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