Please note, this is a STATIC archive of website www.w3resource.com from 19 Jul 2022, cach3.com does not collect or store any user information, there is no "phishing" involved.
w3resource

Python File I/O: Read an entire text file

Python File I/O: Exercise-1 with Solution

Write a Python program to read an entire text file.

Contain of text.txt

What is Python language?                                                
Python is a widely used high-level, general-purpose, interpreted, dynamic programming language.Its design philosophy emphasizes code readability, and its syntax allows programmers to express concepts in fewer lines of code than possible in 
languages such as C++ or Java. 
Python supports multiple programming paradigms, including object-oriented, imperative and functional programming or procedural styles. It features a dynamic type system and automatic memory management and has a large and comprehensive standard library.The best way we learn anything is by practice and exercise questions. We  have started this section for those (beginner to intermediate) who are familiar with Python.

Sample Solution:-

Python Code:

def file_read(fname):
        txt = open(fname)
        print(txt.read())

file_read('test.txt')

Sample Output: 

Welcome to w3resource.com.                                                                                    
Append this text.Append this text.Append this text.                                                           
Append this text.                                                                                             
Append this text.                                                                                             
Append this text.                                                                                             
Append this text.

Flowchart:

Flowchart: File I/O: Read an entire text file.

Python Code Editor:

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: File Exercises Home.
Next: Write a Python program to read first n lines of a file.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Python: Tips of the Day

Find current directory and file's directory:

To get the full path to the directory a Python file is contained in, write this in that file:

import os 
dir_path = os.path.dirname(os.path.realpath(__file__))

(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)

To get the current working directory use

import os
cwd = os.getcwd()

Documentation references for the modules, constants and functions used above:

  • The os and os.path modules.
  • The __file__ constant
  • os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
  • os.path.dirname(path) (returns "the directory name of pathname path")
  • os.getcwd() (returns "a string representing the current working directory")
  • os.chdir(path) ("change the current working directory to path")

Ref: https://bit.ly/3fy0R6m