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Roman numerals are a numeral system that originated in ancient Rome. They were widely used throughout the Roman Empire and continue to be used in certain contexts today. Roman numerals are based on a combination of letters from the Latin alphabet to represent numeric values. The basic symbols used in Roman numerals are as follows − I: 1 V: 5 X: 10 L: 50 C: 100 D: 500 M: 1000 To form larger numbers, these symbols are combined in various ways. The following rules apply − Symbols are typically written from left to right in descending order of ... Read More
In Python, a list is a collection of items or elements that can store multiple values. It is one of the built-in data types in Python and is commonly used for storing and organizing data. A list is represented by square brackets [], and the elements within the list are separated by commas. The elements can be of any data type, including numbers, strings, Booleans, or even other lists. Lists are mutable, meaning you can modify, add, or remove elements from them. Converting a list of integers to a list of strings involves converting each integer element into its string ... Read More
The Extensible Markup Language (XML) is a widely used format for representing structured information. It is a markup language that allows us to define our own tags to describe the data and its structure. XML is designed to be both human-readable and machine-readable. It uses opening and closing tags to enclose elements, which can have attributes and contain nested elements. The structure of XML documents is defined by a set of rules called Document Type Definition (DTD) or XML Schema. In this article, we will see how to convert XML to a dictionary using Python programming. Input Output Scenarios Following ... Read More
In Python, dictionaries are key-value pairs where each key is associated with a corresponding value. When we want to convert a dictionary to a list by repeating keys, we need to iterate over each key-value pair and repeat the key based on its corresponding value. Input Output Scenarios See the following input-output scenarios to understand the concept of converting a dictionary to a list by repeating keys corresponding to the number present in the values. Input dictionary: {'a': 3, 'b': 2, 'c': 1} Output list: ['a', 'a', 'a', 'b', 'b', 'c'] In the input dictionary the key 'a' has ... Read More
In a dictionary, keys must be unique and immutable, while values can be of any type and can have a list of values. In the case of a dictionary of lists, each key points to a list that can contain multiple elements. Here's an example of a dictionary of lists − data = {'numbers':[1, 2, 3, 4, 5, 6], 'states':['UP', 'Tamil Nadu', 'Telangana', 'Gujarat', 'UP', 'Tamil Nadu'], 'cities':['Agra', 'Chennai', 'Hyderabad', 'Surat', 'Lucknow', 'Coimbatore']}) In the above dictionary, each key is mapped to a list of values. For instance, the 'states' key maps to the list ['UP', 'Tamil Nadu', 'Telangana', ... Read More
Regular expressions, commonly known as re or Regex is a powerful tool for manipulating and searching for patterns in text. In Python, regular expressions are implemented using the re-module. A regular expression is a sequence of characters that define a search pattern. The pattern is used to match and manipulate text strings, which can be very useful for tasks such as data cleaning, parsing, and validation. To count the number of uppercase letters, lowercase letters, special characters, and numeric values in a string using regular expressions (regex), we can use specific patterns to match and count the desired characters. Following ... Read More
A tuple, in python, is a sequential data structure that consists of a number of values. It is an immutable data structure. Hence, it is tricky to get a union of two tuples. Through this article we will try to dive into a few of the best possible approaches and understand their implementation in Python. Tuples, in python, are immutable, but they can contain mutable objects. Similarly, we can take help of mutable data structures to get our desired union. The union of Python tuples finds applications in removing duplicates, merging data sources, set operations, data deduplication, merging multiple results, ... Read More
Python is widely used and accepted today because of its versatility and readability. Its powerful features allow developers to perform complex tasks with ease. One such essential feature is type conversion or type casting. Especially with Python lists, which are heterogeneous in nature which often demands converting each nested list element or lists to be converted to a particular data type for use. In mixed lists, it becomes more complex. In this article, we will try to understand and implement type conversion in Nested and Mixed Lists. Through the codes we will decode the python features to implement the ... Read More
This article is our approach to try and understand the various methods to convert a list to single valued lists in Tuple. We will look into the possible Python programming to achieve the same. We will discuss the implementation details, time and space complexities, and efficiency of each method based on the size of the input list. Developers, data scientists, and general readers with a basic technical background will find this article beneficial for judging the best approach for their specific use cases. In python, converting a list to a tuple of single valued lists is not a complex task. ... Read More
Python is a multipurpose programming language which is well known to us for its simplicity and power. Whether you are starting as a fresher or an experienced developer, Python helps us with a wide range of tools to control and display text in various formats. Many times we need superscripts and subscripts as part of our writing especially to denote Scientific Notations or values. In this article, we will try to visualize and understand different ways to print superscripts and subscripts in Python. This will allow you to beautify and justify text output and make it visually appealing and equally ... Read More