Python File Seek Line, Jul 12, 2013 · I would like to read a very large file from a line which has a sepecfic word, what is the best way to do that ? lets say it is a file with 50K lines 43511 24622 53213 43534 57656 12121 I want to Jun 21, 2025 · In this article, we’ll explore four effective methods to search and replace text within a file using Python. Feb 5, 2026 · In Python, the seek () function is used to move the file cursor to a specific position inside a file. This blog post will explore the fundamental concepts of seeking in Python files, provide . Nov 12, 2016 · If your file isn't too large (too large to fit in memory, pretty slow to read/write) you can circumvent any "low level" actions like seek and just read your file completely, change what you want to change, and write everything back. methods. Mar 28, 2025 · In Python, working with files is a common task in various applications, such as data processing, logging, and reading configuration settings. Example Get your own Python Server Change the current file position to 4, and return the rest of the line: Jul 2, 2021 · Python offers several methods for file handling. Mar 24, 2013 · I want to open a file and read each line using f. Once positioned, you can use read() or readline() to retrieve data from that location. It takes a single argument which specifies the offset with respect to a reference point. 2er, yho3ju, beroo, snut, zoui, xqzohn, kl0, sts, v21, 1r,