In Python, the file.readlines() method is a convenient way to read multiple lines from a file into a list. Each line from the file becomes an element in the list. It reads all the lines from a file and stores them in a list, which can be easily manipulated in your code. Basic Usage of file.readlines() Function The simplest way to use a file.readlines() is by opening a file, calling the method, and printing the results. Example The following example code reads all lines from sample.txt into a list and prints each line without extra whitespace. # Open the ... Read More

There are various ways to read files in Python. The most common methods for reading files line by line in Python will be covered. Using readlines() Method Using this method, a file will be opened and its contents will be divided into separate lines. A list of every line in the file is also returned by this method. To effectively read a whole file, we can use the readlines() function. Following is an example to remove swap files using file.endswith() method − Example Following is an example to read a text file line by line using readlines() method − # ... Read More

Python has a built-in file creation, writing, and reading capabilities. In Python, there are two sorts of files that can be handled: text files and binary files (written in binary language, 0s, and 1s). Let us understand how to open a file in python. Python is a good general purpose programming language that has a lot of helpful file IO functions and modules in its standard library. You can use the built in open() function to open a file object for either reading or writing. You can use it to open a file in the following way. Syntax The syntax ... Read More

Python has built in file creation, writing, and reading capabilities. In Python, there are two sorts of files that can be handled: text files and binary files (written in binary language, 0s, and 1s). Let us understand how to open a file in python. Python is a good general purpose programming language that has a lot of helpful file IO functions and modules in its standard library. You can use the built-in open() function to open a file object for either reading or writing. You can use it to open a file in the following way. Syntax The syntax for ... Read More

The open() function is a built-in Python function that helps you work with files, however, the os module offers low-level file handling functions that give more control over how files are opened and managed, two of such function from the os module are os.open() and os.fdopen(). The key difference between both os.open() and os.fdopen() functions is that os.open() is used to open a file and extract its file descriptor, while os.fdopen() is used to wrap an existing file descriptor and create a file object. What is os.open() Function? The os.open() function in the os module opens the specified file and returns a ... Read More

File descriptors in Python are identifiers that represents the open files in the os kernel and are kept in a table of files. Typically, they have non-negative values. Negative results denote an error or a "no value" condition. They support a variety of file-related operations. In general, descriptors are a special approach Python uses to maintain attributes. The main things they assist with are accessing files and other input/output devices like network sockets or pipes. These operations take place on I/O streams identified by following file descriptors − close( fd ) File descriptor closure. This function must be used with ... Read More

The purpose of internal buffers, which are created by the runtime, library, and programming language that you're using, is to speed up operations by preventing system calls on every write. Instead, when writing to a file object, you write into its buffer, and when the buffer is full, system functions are used to write the data to the actual file. Syntax Following is the syntax of flush() function − File_name.flush() No parameters are accepted by it. This method returns nothing; its return type is . Example -1 The flush() method in the program below simply clears the file's internal ... Read More

Open(), a built-in function in Python, opens a file and returns a file object. Methods and properties in file objects can be used to gather data about the file you opened. They may also be used to modify the mentioned file. Open a file Two arguments are required for this function. The filename and full path are listed first, followed by access mode. A file object is returned by this function. syntax Following is the syntax used to open a file: open(filename, mode) Here, the filename and it's path are specified by a string argument, and the mode argument ... Read More

There are times when scenarios arise where you need to delete a directory and all its contents, including subdirectories and files, in the domain of Python programming. Such an operation as above is known as removing a directory recursively. Python makes available a powerful module called shutil that makes it possible for you to perform this task with ease. In this article, we will explore several different ways of how to remove a directory recursively using Python. We will walk you through the process in logical steps, citing code examples and explanations along the way. So, let's get started right ... Read More

Directories and files can be deleted using Python's built-in modules and functions. Removing files or directories is a significant process since, after you've destroyed a directory, it's difficult to get its contents back. Therefore, users can remove the directory and its contents without much difficulty by applying a few useful Python functions. Python has the following functions for removing a directory or folder − Using os.rmdir() function Python uses the os.rmdir() function to delete empty directories. In this scenario, the required directory must be empty; else, an OSError would be raised. If the directory doesn't exist, the FileNOtFoundError is thrown. ... Read More