A detailed explanation of the use of the Tell () method in Python

Source: Internet
Author: User
Tags in python

This article mainly introduces the use of the "Tell" method in Python, is the basic knowledge in Python introductory learning, the need for friends can refer to the

The current position of the file read/write pointer in the file returned by the tell () method.


The following is the syntax for the Tell () method:


1 Fileobject.tell ()



return value

This method returns the current position of the file/write pointer that is read in the file.


The following example shows the use of the Tell () method.


1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21-22 #!/usr/bin/python # Open a file fo = open ("Foo.txt", "rw+") print "Name of the file:", Fo.name # assuming file has fo Llowing 5 Lines # this are 1st line # this is 2nd line # this is 3rd line # the IS 4th . ReadLine () print "Read line:%s"% [line] # get the ' current position ' the ' file. pos = Fo.tell () print ' Current Position:%d '% (POS) # Close Opend file Fo.close ()

When we run the above program, it produces the following results:


1 2 3 4 Name of the File:foo.txt Read Line:this is 1st line current position:18
Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.