Python Programming with Raspberry Pi

seek

Once a file is opened, the file pointer that is used in file I/O moves from the beginning to the end of the file. It is possible to move the pointer to a specific position and read the data from that position. This is especially useful when we are interested in a specific line of a file. Let's consider the text file write_file.txt from the previous example. The contents of the file include:

    I am excited to learn Python using Raspberry Pi Zero    This is a line appended to the file

Let's try to skip the first line and read only the second line using seek:

if __name__ == "__main__":    # open text file to read   file = open('write_file.txt', 'r')    # read the second line from the file   file.seek(53)    data = file.read()    print(data)  file.close() ...