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Articles by Niharikaa Aitam
Page 2 of 8
How to copy a file to a remote server in Python using SCP or SSH?
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 MoreHow to perform different commands over ssh with Python?
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 MoreHow to print Python dictionary into JSON format?
In Python, Dictionaries are used to store structured data. When we want to print this data in a human-readable format or transfer it through the internet, such as to an API, then we need to convert the dictionary to JSON, i.e., JavaScript Object Notation. Python has a built-in module named json to handle such conversions. JSON is JavaScript Object Notation which is a lightweight text-based open standard designed for human-readable data interchange. The JSON format was specified by Douglas Crockford. It has been extended from the JavaScript scripting language. A dictionary in Python is a mutable and unordered collection ...
Read MoreHow to merge multiple Python dictionaries?
In Python, a dictionary is a collection of key-value pairs that is used for data retrieval. In some cases, we may need to combine two or more dictionaries into one. This is known as merging dictionaries. In this article, we will explore different methods to merge multiple dictionaries in Python. Using "|" Merge Operator The "|" merge operator in Python is used to merge multiple dictionaries into one and returns the combined dictionary as a new dictionary. If both dictionaries have the same key, then the value from the dictionary on the right side of the operator will ...
Read MorePython - Check if all elements in a List are same
In Python, a list is a collection of ordered and mutable elements enclosed in square braces[]. Each element in a list has a unique position index, starting from 0. It can accept duplicate elements. In some cases, we may need to check if all the elements in a list are identical or not to detect a special condition in algorithms. Let's go through the different methods to check if all elements in a list are the same or not. Using set() function The Python set() function (built-in) is an unordered collection of unique elements. To check if all elements in a list ...
Read MoreHow to extract all the .txt files from a zip file using Python?
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 MoreHow to truncate a Python dictionary at a given length?
Truncating a dictionary in Python means limiting it to a fixed number of key-value pairs. From version Python 3.7 onwards, the dictionaries store the values based on the insertion order, which makes it easy to slice and rebuild a smaller dictionary using the first N items. This is helpful when we want to reduce data size or process only a portion of the dictionary. In this article, we are going to explore the different methods to truncate a Python dictionary at a given length. Using itertools.islice() Method The itertools.islice() method in Python is used to truncate a dictionary by slicing ...
Read MoreHow to count elements in a nested Python dictionary?
A Nested dictionary is a dictionary inside another dictionary. In Python, we have the function len() to count elements in a Nested Dictionary. With that, we can also use a function that recursively calls and calculates the elements in an arbitrary depth of the nested dictionary. Non-Recursive Count in Nested Dictionary A non-recursive count in a nested dictionary means counting only the keys at the top level, without going into any nested dictionaries inside it. Here is an example of counting the elements in a nested python dictionary- # Define a nested dictionary nested_dict = { ...
Read MoreWhat is the maximum file size we can open using Python?
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 MoreHow we can use Python Tuple within a Tuple?
In Python, a Tuple is an ordered and immutable collection of elements, and tuples are created using parentheses. In this article, we are going to explore all the different ways to use a tuple within a tuple. Tuple within a Tuple in Python A tuple can contain elements of any data type, such as another tuple. When one tuple is placed inside another tuple, it is called a nested tuple or a tuple within a tuple. Following is the syntax of creating a Tuple in Python - outer_tuple = (value1, value2, (nested_value1, nested_value2), value3) Note: We can access ...
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