Python file seek and tell example

in python, you can use the `seek()` method to change the current position of the file pointer within a file. this allows you to read or write data at a specific location within the file.

the `seek()` method takes two arguments:
1. `offset`: the number of bytes to move the file pointer. a positive offset moves the pointer forward, while a negative offset moves it backward.
2. `whence`: the reference point for seeking. it can take one of the following values:

here's an example to demonstrate how to use the `seek()` method in python:

in this example:
- we read the first 10 characters from the file and print them.
- we then use the `seek(0)` method to move the file pointer back to the beginning of the file.
- finally, we read the next 5 characters from the file and print them.

this example demonstrates how you can use the `seek()` method to change the current position of the file pointer within a file to read data from specific locations.

remember to always close the file using the `close()` method after you have finished working with it to free up system resources.

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