Let’s say that you need to open, read, and write text files in Python. First you can use the
open() built-in function to open the file. Once the file is opened you can use the two built-in methods
write() to read from the file and to write to the file.
>>> opened_file = open('file.txt') >>> the_file_content = opened_file.read() >>> the_file_content 'Hi there! I am a .txt file!'
opened_file is a file descriptor object. In the above example, the
read() method reads the entire content of the file. If you wish, you can read just a portion of the file, as is shown below: