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Updating value in binary file with Python

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Updating values in a binary file with Python involves several steps, including opening the binary file in the appropriate mode, seeking to the desired position in the file, and then writing the updated data. In this tutorial, I'll guide you through the process with a code example.
To begin, you need to open the binary file in a mode that allows both reading and writing. You can use the 'rb+' mode for this purpose. Here's how you can open the file:
Before you can update the value in the binary file, you need to move the file pointer to the correct position. You can use the seek() method to do this. The seek() method takes two arguments: the offset and the reference point.
For example, to move to the beginning of the file, you can use:
Once you've positioned the file pointer at the desired location, you can read and update the data. In this example, let's assume you want to update a single byte in the binary file.
Here's a complete example that updates a single byte at a specified position in a binary file:
Remember to adapt the code to your specific needs, such as the binary file path, the position you want to update, and the new data you want to write. Also, ensure that the file exists and that you have the necessary permissions to update it.
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To begin, you need to open the binary file in a mode that allows both reading and writing. You can use the 'rb+' mode for this purpose. Here's how you can open the file:
Before you can update the value in the binary file, you need to move the file pointer to the correct position. You can use the seek() method to do this. The seek() method takes two arguments: the offset and the reference point.
For example, to move to the beginning of the file, you can use:
Once you've positioned the file pointer at the desired location, you can read and update the data. In this example, let's assume you want to update a single byte in the binary file.
Here's a complete example that updates a single byte at a specified position in a binary file:
Remember to adapt the code to your specific needs, such as the binary file path, the position you want to update, and the new data you want to write. Also, ensure that the file exists and that you have the necessary permissions to update it.
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