Now, suppose you are told to read the line no 7 from the text file. Fileobject.read ( n) readline () : Reads a line of the file and returns in form of a string.For specified n, reads at most n bytes. Reads n bytes, if no n specified, reads the entire file. This function can be used for small files, as it reads the whole file content to the memory, then split it into separate lines. read () : Returns the read bytes in form of a string. Method 1: Read a File Line by Line using readlines() readlines() is used to read all the lines at a single go and then return them as each line a string element in a list. Thankfully Python has linecache module which allows us to get any particular line from any file. There are three ways to read data from a text file. As the alternatives to GNU readline do not have fully equivalent functionality, it is useful to add proper readline support to these platforms.
Readlines izip python software#
An empty string is returned only when EOF is encountered immediately. The readline extension module in the standard library of Mac system Python uses NetBSD’s editline (libedit) library instead, which is a readline replacement with a less restrictive software license.
If the optional sizehint argument is present, instead of reading up to EOF, whole lines totalling approximately sizehint bytes (possibly after rounding up to an internal buffer size) are read. I love Python just because of its cool built-in modules. Python file method readlines () reads until EOF using readline () and returns a list containing the lines. Output: I am line no 5 Read a specific line from a text file in Python using linecache module Then we will use the below code: file = open('this_is_file.txt')
Now we have to read the texts from line no 5. Here is the content of the text file: I am line no 1 all_lines – If you want to read the line no 15 then put 14 in the square brackets.Ī simple example of reading a particular line from a text fileĪssume that we have a text file with the file name this_is_file.txt.all_lines_variable – This is the variable to hold the lines as an Object.Where file_variable is the variable name.This is the easiest way to read a particular line from a text file in Python. Read a specific line from a text file in PythonĬode snippet: file_variable = open('filename.txt')Īll_lines_variable = file_variable.readlines()