Python Articles - Page 9 of 1048

Classes and objects are the fundamental elements of programming. These entities construct the entire logic and controls the access to different parts of the code. There could be a situation where we are restricted by the complexity of the operation and therefore, we require an efficient and optimized solution. The Proxy Design Pattern is one such powerful technique of creating a proxy class instead of an instance of the real class. In this article, we will be exploring the basics of this technique and understand how we can use it to solve problems involving huge amount of data. Let’s begin ... Read More

In programming the concept of protected variable is used to create an access control system. In this system, we establish a hierarchy or level of access control. This concept solidifies the basis of object-oriented programming. The technical meaning of a protected variable remains the same but the syntax and behaviour may vary between different programming languages. Python follows the conventional logic of accessing and manipulating the attributes and methods, but the representation and degree of enforcement of access control is a little different. Understanding Protected Variables in Python Protected variables in python manages the internal use of the attributes and ... Read More

What is Hexadecimal String? A hexadecimal string is a textual representation of data in the hexadecimal number system. In this system the numbers are represented using a base-16 notation which means in the combination of digits 0 to 9 and the letters A to F. Each hexadecimal digit corresponds to a 4-bit binary sequence which allowing compact representation of binary data. In a hexadecimal string each character represents a nibble i.e. 4 bits of data. Two hexadecimal characters together form a byte i.e. 8 bits. Hexadecimal strings are commonly used to represent binary data such as byte sequences, memory addresses, ... Read More

The aspect ratio of a plot refers to the ratio of the width to the height of the plotting area. It is a crucial parameter in data visualization as it determines the shape and proportions of the plot which directly affects how the data is visually represented. For example in a square plot the aspect ratio would be 1:1 which means the width is equal to the height. In contras if the width is twice the height then the aspect ratio would be 2:1 and the plot would be wider horizontally. The below are the effects of changing the plot’s ... Read More

Consecutive Character Maximum Difference refers to finding the maximum absolute difference between the ASCII values of consecutive characters in a string. It is used to measure the maximum "gap" or "jump" in the character sequence based on their ASCII values. In Python, each character in a string is represented internally as a Unicode code point, and the corresponding ASCII value can be obtained using the `ord()` function. The ASCII values of consecutive characters can be compared to calculate the absolute difference between them. For example, consider the string "abcdefg" − The ASCII value of 'a' is 97. The ASCII ... Read More

Concatenation is the process of combining two or more strings, sequences, or data structures together to create a single larger entity. In the context of strings, concatenation involves joining multiple strings end-to-end to form a new, longer string. In many programming languages such as Python, the concatenation operation is typically represented using the + operator. When we use the + operator with strings, it performs string concatenation, joining the strings together in the order they appear. Example Here's an example of string concatenation in Python. string1 = "Welcome to " string2 = "Tutorialspoint!" result = string1 + string2 print(result) ... Read More

Converting a character matrix to a single string in Python means taking a 2D representation of characters such as a list of lists or a NumPy array and combining all the characters into a single string. The order of the characters in the resulting string is determined by the arrangement of characters in the matrix. In this implementation, the matrix_to_string() function takes a 2D list of characters (matrix) as input. The function first uses list comprehension to join characters in each row into individual strings. The result is a list of strings representing each row in the matrix. Next, the ... Read More

Concatenation is the process of combining two or more strings, lists, or other sequences into a single entity. It involves joining the elements of the sequences in a specific order to create a new sequence or string. In Python, concatenation can be performed on various types of sequences, including strings, lists, tuples, and more. The specific method or operator used for concatenation depends on the type of sequences being combined. Let's explore different approaches to concatenation in Python − String Concatenation When concatenating strings, the '+' operator or the str.join() method is commonly used. In the below example, the strings ... Read More

Concatenation is the process of combining two or more strings, lists, or other sequences into a single entity. It involves joining the elements of the sequences in a specific order to create a new sequence or string. In the context of strings, concatenation means appending one string to the end of another, resulting in a longer string. For example, if we have two strings, "Hello" and "World", concatenating them would produce the string "HelloWorld". The concatenation operator (+) or the str.join() method is commonly used for string concatenation in Python. Similarly, concatenation can be applied to other sequence types, such ... Read More

Python is an interpreted programming language. However, when we want to check whether Python is compiled or interpreted can be a bit confused. Let's dive into a detailed explanation to understand the inner workings of Python's execution model and how it combines aspects of compilation and interpretation. Interpreted languages are typically executed directly by an interpreter without a separate compilation step. In contrast, compiled languages go through a compilation process where the source code is translated into machine code or an intermediate representation before execution. However, Python's execution model is a blend of both interpretation and compilation. At a high ... Read More