In Python, Regular expressions are also called RegEx, which is a sequence of characters that defines a search pattern. The re module provides several functions to work with patterns in text. This is widely used in Python tasks such as string matching, validation, and manipulation. The most commonly used functions in the "re" module are re.match() and re.search(). These two methods are used to check for the presence of a pattern, but they differ in the way they look for a pattern match within a string. In this article, we are going to see the difference between the Python re.search() ... Read More

When we are working with string data in Python, it's sometimed necessary to check if certain patterns appear in a string. Python's re module contains many methods which are used for pattern matching in the given strings using regular expressions. What is match() function? The match() function in re module is used in the scenarios such as validating structured input, checking prefixes or extracting information from well-defined formats such as phone numbers or dates. Syntax Following is the syntax of using the match() function in Python - re.match(pattern, string, flags=0) Where, pattern: The regular ... Read More

SSH is referred as secure shell which is useful to remotely manage computers in a secure manner. To connect to a server, we typically use PuTTy, MobaXTerm or the command-line ssh application. Every Unix, Linux and Mac server includes SSH as standard equipment and it is usable in every data centre. SSH connections have made it feasible for secure remote access to resources, remote command execution, the transmission of software patches and updates and other administrative or management tasks. SSH is used in systems administration and file transfer software as well as to handle routers, server hardware, virtualization platforms and ... Read More

When we want to remotely access and execute commands on another machine then we use the paramiko library in Python. Paramiko is a third-party library that is used to connect and communicate securely with remote machines using the SSH, i.e., Secure Shell protocol. It allows us to execute commands, transfer files, and perform other remote tasks programmatically. To use the Paramiko library, first we need to install it in our local system using the below command - pip install paramiko Example Following is the example, in which we connect to a remote server via SSH and perform multiple shell ... Read More

In Python we can use FTP (File Transfer Protocol) by importing the ftplib module, it will provide a simple interface to access FTP servers to retrieve files and process them locally. ftplib module allows us to write Python programs that perform a variety of automated FTP tasks. Objectives of FTP The objectives of FTP are as follows FTP provides file sharing. FTP helps us to encourage the use of remote computers. FTP is used to transfer the data reliably and efficiently. Some Common tasks we can perform using FTP in Python by utilizing the 'ftplib' module are as follows: ... Read More

When we want to transfer files from our local system to a remote server securely, Python provides possible ways to do the file transfer using the Paramiko and SCP libraries. These libraries support SSH-based file transfer, which is secure and reliable. Installing Required Libraries Before we start with file transfer, we need to install all the required libraries with the help of below commands - pip install paramiko scp Using paramiko and SCP/SSH Paramiko is a third-party library available in Python, which is used to transfer a file to a remote server without using an external SCP module. This ... Read More

Transferring files from one server to another is a most common task in system administration, DevOps and development workflows. The tools such as scp and rsync are used for the file transfer. Python provides different methods and tools to transfer the files from one server to another using a third party libraries such as paramiko and SCPClient. Using Paramiko and SCP for Secure Transfers When we want to copy files securely from one server to another using Python, we can use the libraries Paramiko and SCPClient together. Paramiko is a Python library that helps to implement SSHv2 protocol. This is ... Read More

In Python, when performing file operations such as creating or renaming files, one of the limitations is the maximum length limit of a file name, and when we exceed this limit, then results in errors such as OSError: [Errno 36] File name too long. Using os.pathconf() function In Python, the os.pathconf() function is used to get system-specific configuration values related to files and directories. This function also helps in checking limits such as the maximum file name length or the maximum path length allowed by the file system. Syntax Following is the syntax of using the os.pathconf() function - os.pathconf(path, name) ... Read More

In Python, there is no fixed maximum file size that we can open. Python can open files of any size as long as the operating system and file system support until there is enough memory and disk space available. The limit of maximum file size comes with the system architecture, i.e., 32-bit, 64-bit, the file system, such as FAT32, NTFS, ext4, and how the file is processed in the code. System and File System Limits Following are the system and file system limits - FAT32 – Maximum file size: 4 GB NTFS (Windows) – Supports ... Read More

Python provides a built-in module called zipfile that allows us to create, read, write, and extract ZIP archives. When we want to extract only specific files, such as all .txt files, then we can perform filtering of the file names using string methods such as endswith(). A ZIP file is one of the archive formats which is used to compress one or more files into a single file to easily store and transfer data. It reduces the file size and keeps all related files compressed together for sharing over the internet and for saving disk space. Steps involved in ... Read More