What Is Read Readline Used for in Python?
What are readline() & readlines() Methods In Python
Last updated on Jul fifteen,2021 26K Views
Python programming language is a pinnacle in the It manufacture. With vivid library support and out of the box features, Python programming has made file treatment looking similar a easy. Information technology provides easy implementations for File handling related tasks. 1 such method is the Python readline method. In this article, nosotros will acquire about the Python readline() method with examples. The post-obit concepts are covered in this article:
- What is Python readline()?
- Syntax And Usage
- Python readline() Examples
- Python readlines() Examples
What is Python readline()?
Python readline() method will return a line from the file when called.
readlines() method volition return all the lines in a file in the format of a list where each element is a line in the file.
Syntax And Usage
Afterward opening the file using the open() method, we can simply use these methods.
Python readline() syntax
file = open up("filename.txt", "r") file.readline() The readline method takes one parameter i.e size, the default value for the size parameter is -i. It ways that the method will return the whole line. It is an optional parameter, nosotros tin specify the number of bytes from a line to render.
readlines() Syntax
file = open up("filename.txt","r") file.readlines() The readlines method takes one parameter i.e hint, the default value for the hint parameter is -1. It means that the method will render all the lines. If we specify the hint parameter, the lines exceeding the number of bytes from the hint parameter will not exist returned by the readlines method.
Let us go alee and take a look at a few examples to sympathize how these methods work in Python.
Python readline() Examples
Let united states of america suppose we have a text file with the name examples.txt with the post-obit content.
Python is the all-time programming language in the globe in 2020
Edureka is the biggest Ed-tech platform to learn python
Python programming is as easy as writing a program in simple English language
Now, to employ the readline, we will have to open the example.txt file.
file = open("example.txt", "r") example1 = file.readline() example2 = file.readline(xiv) print(example1) impress(example2) Output: Python is the best programming language in the earth in 2020
Edureka is the
readlines() Examples
We can apply the readlines() method only like we used readline() in the above example.
example1 = file.readlines() print(example1)
Output: [' Python is the best programming language in the globe in 2020',
'Edureka is the biggest Ed-tech platform to learn python',
'Python programming is equally easy as writing a programme in unproblematic English linguistic communication']
example2 = file.readlines(80) print(example2)
Output: ['Python is the best programming language in the world in 2020',
'Edureka is the biggest Ed-tech platform to learn python']
This brings u.s.a. to the end of this article where we have learned how we use the Python readline() method with examples. I promise you are clear with all that has been shared with you lot in this tutorial.
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Source: https://www.edureka.co/blog/python-readline/
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