Python file operations seek and tell

Опубликовано: 16 Июль 2024
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in python, the `seek()` method is used to change the current file position within a file. the `tell()` method returns the current position within the file. these methods are often used when reading from or writing to files, especially when you need to move around within the file.

here is a tutorial with code examples to demonstrate how to use `seek()` and `tell()` in python file operations:

seek method
the `seek()` method is used to move the current file position to a specified offset within the file. the syntax is as follows:


`offset`: the number of bytes to move the cursor.
`whence`: optional parameter that specifies the reference point for the offset. the possible values are:
`0` (default): start of the file
`1`: current file position
`2`: end of the file

tell method
the `tell()` method returns the current file position. the syntax is as follows:


code example:
here is an example demonstrating the use of `seek()` and `tell()` methods in python file operations:



output:


in this example, we opened a file "sample.txt" in read mode, read the first 10 characters, moved the cursor 5 bytes forward from the current position using `seek()`, read the next 5 characters, and then used `tell()` to get the new position.

you can experiment with different offset values and reference points to understand how `seek()` and `tell()` methods work in python file operations.

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