Welcome to the world of Python! Whether you’re a student, a professional switching careers, or just curious about coding, Python is one of the best languages to start with. It’s simple, readable, and incredibly powerful.<\/p>\n\n\n\n
Python is a high-level, interpreted programming language<\/strong>. That means:<\/p>\n\n\n\n Python is known for its clean syntax<\/strong>, which makes it ideal for beginners.<\/p>\n\n\n\n To start coding:<\/p>\n\n\n\n Install Python<\/strong> from python.org. Once installed, open terminal and check if python has been installed successfully.<\/p>\n\n\n\n Let’s write our first Python file, say Now, open your command line or terminal, navigate to the directory where you saved your file, and run following command to execute the code.<\/p>\n\n\n\n The output should be: <\/p>\n\n\n\n And just like that, you’ve run your first Python script!<\/p>\n\n\n\n Variables are like containers that store data. You can name them anything (following naming rules), and Python automatically figures out the type.<\/p>\n\n\n\n Operators let you perform actions on variables.<\/p>\n\n\n\n Control flow lets your program make decisions and repeat actions.<\/p>\n\n\n\n Used to repeat actions a fixed number of times.<\/p>\n\n\n\n This prints numbers from 0 to 4.<\/p>\n\n\n\n Repeats as long as a condition is true.<\/p>\n\n\n\n Important Note: <\/strong>In\u00a0Python a\u00a0 Python has built-in structures to store collections of data.<\/p>\n\n\n\n 1. List<\/strong> \u2013 Ordered, mutable<\/p>\n\n\n\n 2. Tuple<\/strong> \u2013 Ordered, immutable<\/p>\n\n\n\n 3. Dictionary<\/strong> \u2013 Key-value pairs, just like JSON object.<\/p>\n\n\n\n 4. Set<\/strong> \u2013 Unordered, unique items<\/p>\n\n\n\n Here\u2019s a comparative table<\/strong> that clearly explains the differences between Python\u2019s core data structures \u2014 List<\/strong>, Tuple<\/strong>, Set<\/strong>, and Dictionary<\/strong> \u2014 with detailed descriptions and examples:<\/p>\n\n\n\n Would you like a visual diagram of this comparison or a downloadable Markdown\/PDF version for your blog or documentation?<\/p>\n\n\n\n Functions are reusable blocks of code.<\/p>\n\n\n\n Let\u2019s build a simple python project step by step and run it.<\/p>\n\n\n\n 1. Setup a project directory let’s say age-calculator.<\/p>\n\n\n\n 2. Create a 3. Execute the code:<\/p>\n\n\n\n In the program-<\/p>\n\n\n\n That’s it! We have created our first python project.<\/p>\n\n\n\n <\/p>\n","protected":false},"excerpt":{"rendered":" Welcome to the world of Python! Whether you’re a student, a professional switching careers, or just curious about coding, Python is one of the best languages to start with. It’s [ … ]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[288],"tags":[292,293,294],"class_list":["post-1445","post","type-post","status-publish","format-standard","hentry","category-python","tag-learn-python","tag-python-basics","tag-python-for-beginners","list-style-post"],"_links":{"self":[{"href":"https:\/\/datatype.co.in\/blog\/wp-json\/wp\/v2\/posts\/1445","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/datatype.co.in\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/datatype.co.in\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/datatype.co.in\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/datatype.co.in\/blog\/wp-json\/wp\/v2\/comments?post=1445"}],"version-history":[{"count":56,"href":"https:\/\/datatype.co.in\/blog\/wp-json\/wp\/v2\/posts\/1445\/revisions"}],"predecessor-version":[{"id":1567,"href":"https:\/\/datatype.co.in\/blog\/wp-json\/wp\/v2\/posts\/1445\/revisions\/1567"}],"wp:attachment":[{"href":"https:\/\/datatype.co.in\/blog\/wp-json\/wp\/v2\/media?parent=1445"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/datatype.co.in\/blog\/wp-json\/wp\/v2\/categories?post=1445"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/datatype.co.in\/blog\/wp-json\/wp\/v2\/tags?post=1445"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\n
Setting Up Python<\/h2>\n\n\n\n
python --version<\/code><\/pre>\n\n\n\n<\/ol>\n\n\n\n
hello.py<\/code>, which can be done in any text editor like notepad or vim\/nano (in linux). Now type the following code in the file and save it:<\/p>\n\n\n\n# hello.py\nprint(\"Hello, world!\")\n<\/code><\/pre>\n\n\n\npython hello.py<\/code><\/pre>\n\n\n\nHello, World!<\/code><\/pre>\n\n\n\nPython Basics<\/h2>\n\n\n\n
1. Variables and Data Types<\/strong><\/h3>\n\n\n\n
name = \"Alice\" # String (text)\nage = 25 # Integer (whole number)\nheight = 5.6 # Float (decimal number)\nis_student = True # Boolean (True\/False)<\/code><\/pre>\n\n\n\n\n
True<\/code> or False<\/code>.<\/li>\n<\/ul>\n\n\n\n2. Operators<\/strong><\/h3>\n\n\n\n
# Arithmetic Operators:\nx = 10 + 5 # Addition\ny = 10 - 3 # Subtraction\nz = 4 * 2 # Multiplication\na = 10 \/ 2 # Division\n\n# Comparison Operators:\n# Used to compare values. They return True or False.\n\nprint(x > y) # Greater than\nprint(x == y) # Equal to\n\n# Logical Operators:\n# Used to combine conditions.\n\nprint(True and False) # False\nprint(True or False) # True<\/code><\/pre>\n\n\n\n3. Control Flow<\/strong><\/h3>\n\n\n\n
if<\/code>\u00a0Statement:<\/strong><\/p>\n\n\n\nif age > 18:\n print(\"You are an adult.\")\nelse:\n print(\"You are a minor.\")\n<\/code><\/pre>\n\n\n\nelif<\/code><\/strong> Statement<\/strong>:<\/p>\n\n\n\na = 200\nb = 33\nif b > a:\n print(\"b is greater than a\")\nelif a == b:\n print(\"a and b are equal\")\nelse:\n print(\"a is greater than b\")<\/code><\/pre>\n\n\n\nfor<\/code> Loop:<\/strong><\/p>\n\n\n\nfor i in range(5):\n print(i)\n<\/code><\/pre>\n\n\n\nwhile<\/code> Loop:<\/strong><\/p>\n\n\n\n# Keep asking for input until the user enters \"stop\"\nuser_input = \"\"\nwhile user_input != \"stop\":\n user_input = input(\"Enter a command (type 'stop' to exit): \")\n print(f\"You entered: {user_input}\")\n\n<\/code><\/pre>\n\n\n\nfor<\/code>\u00a0loop<\/strong>\u00a0is used for\u00a0definite iteration<\/strong>\u00a0over a sequence of items (like a list, string, or range), where the number of iterations is known in advance. A\u00a0while<\/code>\u00a0loop<\/strong>\u00a0is used for\u00a0indefinite iteration<\/strong>, repeating a block of code as long as a specified condition remains\u00a0True<\/code>, making it ideal when the number of iterations is unknown beforehand.<\/p>\n\n\n\nData Structures<\/h2>\n\n\n\n
fruits = [\"apple\", \"banana\", \"cherry\"]\nprint(fruits[0]) # apple\n<\/code><\/pre>\n\n\n\npoint = (10, 20)\n<\/code><\/pre>\n\n\n\nperson = {\"name\": \"Alice\", \"age\": 25}\nprint(person[\"name\"]) # Alice\n<\/code><\/pre>\n\n\n\nunique_numbers = {1, 2, 3, 2}\nprint(unique_numbers) # {1, 2, 3}\n<\/code><\/pre>\n\n\n\nPython Data Structures Comparison<\/h3>\n\n\n\n
Feature<\/th> List<\/strong><\/th> Tuple<\/strong><\/th> Set<\/strong><\/th> Dictionary<\/strong><\/th><\/tr><\/thead> Definition<\/strong><\/td> Ordered, mutable collection<\/td> Ordered, immutable collection<\/td> Unordered, mutable, unique items<\/td> Unordered collection of key-value pairs<\/td><\/tr> Syntax<\/strong><\/td> fruits = [\"apple\", \"banana\"]<\/code><\/td>point = (10, 20)<\/code><\/td>nums = {1, 2, 3}<\/code><\/td>person = {\"name\": \"Alice\", \"age\": 25}<\/code><\/td><\/tr>Ordering<\/strong><\/td> Maintains order<\/td> Maintains order<\/td> No guaranteed order<\/td> No guaranteed order (Python 3.7+ maintains insertion order)<\/td><\/tr> Mutability<\/strong><\/td> \u2705 Can be changed<\/td> \u274c Cannot be changed<\/td> \u2705 Can be changed<\/td> \u2705 Can be changed<\/td><\/tr> Duplicates Allowed<\/strong><\/td> \u2705 Yes<\/td> \u2705 Yes<\/td> \u274c No<\/td> \u2705 Keys must be unique; values can repeat<\/td><\/tr> Indexing<\/strong><\/td> \u2705 Yes ( fruits[0]<\/code>)<\/td>\u2705 Yes ( point[1]<\/code>)<\/td>\u274c No indexing<\/td> \u2705 Keys used for access ( person[\"name\"]<\/code>)<\/td><\/tr>Use Case<\/strong><\/td> Store ordered items like a list<\/td> Fixed data like coordinates<\/td> Unique items like tags or IDs<\/td> Map relationships like name-age pairs<\/td><\/tr> Common Methods<\/strong><\/td> .append()<\/code>, .remove()<\/code>, .sort()<\/code><\/td>.count()<\/code>, .index()<\/code><\/td>.add()<\/code>, .remove()<\/code>, .union()<\/code><\/td>.keys()<\/code>, .values()<\/code>, .items()<\/code><\/td><\/tr>Performance<\/strong><\/td> Slower than tuple for iteration<\/td> Faster for iteration<\/td> Fast membership tests<\/td> Fast lookups via keys<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\n\n\n\n Summary<\/h3>\n\n\n\n
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Functions<\/h2>\n\n\n\n
def greet(name):\n return f\"Hello, {name}!\"\n\nprint(greet(\"Alice\"))<\/code><\/pre>\n\n\n\n\n
def<\/code> defines a function.<\/li>\n\n\n\nreturn<\/code> sends back a result.<\/li>\n<\/ul>\n\n\n\nMini Project: Age Calculator<\/h2>\n\n\n\n
mkdir age-calculator<\/code><\/pre>\n\n\n\nmain.py<\/code><\/span> file in age-calculator directory and add following code:<\/p>\n\n\n\nname = input(\"Enter your name: \")\nage = int(input(\"Enter your age: \"))\nyears_to_100 = 100 - age\nprint(f\"Hi {name}, you'll turn 100 in {years_to_100} years!\")<\/code><\/pre>\n\n\n\nD:\\Python\\age-calculator> python main.py\n# Output\nEnter your name: Tom\nEnter your age: 25\nHi Tom, you'll turn 100 in 75 years!<\/code><\/pre>\n\n\n\n\n
input()<\/code> gets user input.<\/li>\n\n\n\nint()<\/code> converts input to a number.<\/li>\n\n\n\nf\"\"<\/code> is an f-string for formatting.<\/li>\n<\/ul>\n\n\n\n
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