Python Coding Practice Problems (original) (raw)

Python Tutorial | Learn Python Programming Language Python Tutorial â€“ Python is one of the most popular programming languages. Itâ€™s simple to use, packed with features and supported by a wide range of libraries and frameworks. Its clean syntax makes it beginner-friendly. Python is: A high-level language, used in web development, data science, automat 10 min read

Python Fundamentals

Python Introduction Python was created by Guido van Rossum in 1991 and further developed by the Python Software Foundation. It was designed with focus on code readability and its syntax allows us to express concepts in fewer lines of code. Key Features of PythonPythonâ€™s simple and readable syntax makes it beginner-frie 3 min read

Input and Output in Python Understanding input and output operations is fundamental to Python programming. With the print() function, we can display output in various formats, while the input() function enables interaction with users by gathering input during program execution. Taking input in PythonPython input() function is 8 min read

Python Variables In Python, variables are used to store data that can be referenced and manipulated during program execution. A variable is essentially a name that is assigned to a value. Unlike many other programming languages, Python variables do not require explicit declaration of type. The type of the variable i 7 min read

Python Operators In Python programming, Operators in general are used to perform operations on values and variables. These are standard symbols used for logical and arithmetic operations. In this article, we will look into different types of Python operators. OPERATORS: These are the special symbols. Eg- + , * , /, 6 min read

Python Keywords Keywords in Python are reserved words that have special meanings and serve specific purposes in the language syntax. Python keywords cannot be used as the names of variables, functions, and classes or any other identifier. List of Keywords in PythonTrueFalseNoneandornotisifelseelifforwhilebreakconti 12 min read

Python Data Types Python Data types are the classification or categorization of data items. It represents the kind of value that tells what operations can be performed on a particular data. Since everything is an object in Python programming, Python data types are classes and variables are instances (objects) of thes 10 min read

Conditional Statements in Python Conditional statements in Python are used to execute certain blocks of code based on specific conditions. These statements help control the flow of a program, making it behave differently in different situations. If Conditional Statement in PythonIf statement is the simplest form of a conditional st 6 min read

Loops in Python - For, While and Nested Loops Loops in Python are used to repeat actions efficiently. The main types are For loops (counting through items) and While loops (based on conditions). Additionally, Nested Loops allow looping within loops for more complex tasks. While all the ways provide similar basic functionality, they differ in th 10 min read

Python Functions

Python def Keyword Python def keyword is used to define a function, it is placed before a function name that is provided by the user to create a user-defined function. In Python, a function is a logical unit of code containing a sequence of statements indented under a name given using the â€œdefâ€ keyword. In Python def 6 min read

Python return statement A return statement is used to end the execution of the function call and it "returns" the value of the expression following the return keyword to the caller. The statements after the return statements are not executed. If the return statement is without any expression, then the special value None is 4 min read

Global and Local Variables in Python Python Global variables are those which are not defined inside any function and have a global scope whereas Python local variables are those which are defined inside a function and their scope is limited to that function only. In other words, we can say that local variables are accessible only insid 7 min read

Recursion in Python Recursion involves a function calling itself directly or indirectly to solve a problem by breaking it down into simpler and more manageable parts. In Python, recursion is widely used for tasks that can be divided into identical subtasks. In Python, a recursive function is defined like any other func 6 min read

*args and **kwargs in Python In Python, *args and **kwargs are used to allow functions to accept an arbitrary number of arguments. These features provide great flexibility when designing functions that need to handle a varying number of inputs. Example: [GFGTABS] Python # *args example def fun(*args): return sum(args) print(fun 4 min read

Python Lambda Functions Python Lambda Functions are anonymous functions means that the function is without a name. As we already know the def keyword is used to define a normal function in Python. Similarly, the lambda keyword is used to define an anonymous function in Python. In the example, we defined a lambda function(u 7 min read

Python map() function The map() function is used to apply a given function to every item of an iterable, such as a list or tuple, and returns a map object (which is an iterator). Let's start with a simple example of using map() to convert a list of strings into a list of integers. [GFGTABS] Python s = ['1', ' 4 min read

Python Data Structures

Python String A string is a sequence of characters. Python treats anything inside quotes as a string. This includes letters, numbers, and symbols. Python has no character data type so single character is a string of length 1. [GFGTABS] Python s = "GfG" print(s[1]) # access 2nd char s1 = s + s[0] # updat 6 min read

Python Lists In Python, a list is a built-in dynamic sized array (automatically grows and shrinks). We can store all types of items (including another list) in a list. A list may contain mixed type of items, this is possible because a list mainly stores references at contiguous locations and actual items maybe s 6 min read

Python Tuples A tuple in Python is an immutable ordered collection of elements. Tuples are similar to lists, but unlike lists, they cannot be changed after their creation (i.e., they are immutable). Tuples can hold elements of different data types. The main characteristics of tuples are being ordered , heterogene 7 min read

Dictionaries in Python A Python dictionary is a data structure that stores the value in key: value pairs. Values in a dictionary can be of any data type and can be duplicated, whereas keys can't be repeated and must be immutable. Example: Here, The data is stored in key:value pairs in dictionaries, which makes it easier t 5 min read

Python Sets Python set is an unordered collection of multiple items having different datatypes. In Python, sets are mutable, unindexed and do not contain duplicates. The order of elements in a set is not preserved and can change. Creating a Set in PythonIn Python, the most basic and efficient method for creatin 11 min read

Python Arrays Lists in Python are the most flexible and commonly used data structure for sequential storage. They are similar to arrays in other languages but with several key differences: Dynamic Typing: Python lists can hold elements of different types in the same list. We can have an integer, a string and even 10 min read

List Comprehension in Python List comprehension is a way to create lists using a concise syntax. It allows us to generate a new list by applying an expression to each item in an existing iterable (such as a list or range). This helps us to write cleaner, more readable code compared to traditional looping techniques. For example 4 min read

Python Database Handling

Python MongoDB Tutorial MongoDB is one of the most popular NoSQL database. It is a cross-platform, object-oriented database. Basically NoSQL means MongoDB does not store data in the table or relational format rather provide a different mechanism for storage and retrieval of data. This is called BSON which is similar to JSO 3 min read

Python MySQL Python MySQL Connector is a Python driver that helps to integrate Python and MySQL. This Python MySQL library allows the conversion between Python and MySQL data types. MySQL Connector API is implemented using pure Python and does not require any third-party library.Â This Python MySQL tutorial will 9 min read

Python Packages or Libraries

Python Modules Python Module is a file that contains built-in functions, classes,its and variables. There are many Python modules, each with its specific work. In this article, we will cover all about Python modules, such as How to create our own simple module, Import Python modules, From statements in Python, we 7 min read

Python DSA Libraries Data Structures and Algorithms (DSA) serve as the backbone for efficient problem-solving and software development. Python, known for its simplicity and versatility, offers a plethora of libraries and packages that facilitate the implementation of various DSA concepts. In this article, we'll delve in 15+ min read

List of Python GUI Library and Packages Graphical User Interfaces (GUIs) play a pivotal role in enhancing user interaction and experience. Python, known for its simplicity and versatility, has evolved into a prominent choice for building GUI applications. With the advent of Python 3, developers have been equipped with lots of tools and li 12 min read

Data Science with Python

Python NumPy Numpy is a general-purpose array-processing package. It provides a high-performance multidimensional array object, and tools for working with these arrays. It is the fundamental package for scientific computing with Python. Besides its obvious scientific uses, Numpy can also be used as an efficient 6 min read

Pandas Tutorial Pandas is an open-source software library designed for data manipulation and analysis. It provides data structures like series and DataFrames to easily clean, transform and analyze large datasets and integrates with other Python libraries, such as NumPy and Matplotlib. It offers functions for data t 7 min read

Matplotlib Tutorial Matplotlib is an open-source visualization library for the Python programming language, widely used for creating static, animated and interactive plots. It provides an object-oriented API for embedding plots into applications using general-purpose GUI toolkits like Tkinter, Qt, GTK and wxPython. It 5 min read

Introduction to Seaborn - Python Prerequisite - Matplotlib LibraryÂ Visualization is an important part of storytelling, we can gain a lot of information from data by simply just plotting the features of data. Python provides a numerous number of libraries for data visualization, we have already seen the Matplotlib library in this a 5 min read

StatsModel Library- Tutorial Statsmodels is a useful Python library for doing statistics and hypothesis testing. It provides tools for fitting various statistical models, performing tests and analyzing data. It is especially used for tasks in data science ,economics and other fields where understanding data is important. It is 4 min read

Learning Model Building in Scikit-learn Building machine learning models from scratch can be complex and time-consuming. However with the right tools and frameworks this process can become significantly easier. Scikit-learn is one such tool that makes machine learning model creation easy. It provides user-friendly tools for tasks like Cla 10 min read

XGBoost Traditional machine learning models like decision trees and random forests are easy to interpret but often struggle with accuracy on complex datasets. XGBoost, short for eXtreme Gradient Boosting, is an advanced machine learning algorithm designed for efficiency, speed, and high performance. What is 9 min read

TensorFlow Tutorial TensorFlow is an open-source machine-learning framework developed by Google. It is written in Python, making it accessible and easy to understand. It is designed to build and train machine learning (ML) and deep learning models. It is highly scalable for both research and production.It supports CPUs 3 min read

What is PyTorch ? PyTorch is a deep learning library built on Python and Torch (a Lua-based framework). It provides GPU acceleration, dynamic computation graphs, and an intuitive interface for deep learning researchers and developers. PyTorch follows a "define-by-run" approach, meaning that its computational graphs a 5 min read