Two free tracks: Beginner from your first line of code, and Intermediate for placements and internships. Browser compiler, instant practice, no card.
PYTHON QUIZ Question 1: What does print() do?> display textCorrect! Question 2: Which symbol compares two values?> ==Correct! Your score: 8/10Excellent work!$
↑ Beginner capstone (Lesson 10). Intermediate ships a JSON expense tracker.
Choose a path
Same browser compiler and lesson loop. Beginner is open to everyone. Intermediate unlocks after a short test or Beginner Lesson 9.
Beginner
Live10 lessons · ~8 hr · certificate
From your first print() to a working quiz game. No coding background needed.
Build a complete mini quiz game on your own
Free forever · certificate when you finish all lessons and the Final Challenge.
Intermediate
Live12 lessons · job & internship · capstone
Job-ready Python: specs, dicts, parsing, errors, JSON, OOP and shipping — with practice every step.
Ship a small tool you can show in an internship interview
Unlock with Test to Intermediate or Beginner Lesson 9.
Python Advanced — coming soon · Intermediate locked until test or Lesson 9
In short
Mentr Learn Python is hands-on, not video-heavy: Beginner (10 lessons to a quiz-game project + certificate) and Intermediate (12 job-focused lessons — dicts, JSON, OOP, shipping). Unlock Intermediate with Test to Intermediate or after Beginner Lesson 9. Free compiler, ₹0.
01 / A new way
Most beginners buy a long video course, watch a few hours and quietly stop. Nobody learns to code by watching. You learn by writing code, getting it wrong and fixing it.
Mentr gives you two live paths — Beginner (10 lessons to a quiz game + certificate) and Intermediate (12 job-focused lessons + capstone). Same loop: short lessons, instant checks and a compiler in your browser. No paid program, nothing to install.
The usual way
Mentr Learn Python
A 60-hour video course you half-watch at 2× speed
About 8 hours of short lessons where you do something every minute
₹3,000 to ₹50,000 for a paid program or bootcamp
No fee, no trial, nothing locked behind a paywall
Long documentation written for working engineers
Plain English and real-world examples, one idea at a time
Install Python and set up an editor before line one
Code runs in your browser, even on a phone
Nobody checks your work until the exam
Every answer is checked instantly, with a hint when you're wrong
You guess what code will do before you see it. Wrong guesses are where the learning happens.
You watch a program get built line by line, then build one yourself. Beginners learn faster this way than from a blank page.
A question after every idea, not one big test at the end. Recalling something is what makes it stick.
XP for every right answer, badges and a daily streak keep you coming back for ten minutes a day.
02 / What you get
500+ auto-checked exercises, an in-browser Python compiler, 22 lessons with notes and runnable examples — shared across both tracks, built for first-time coders and placement prep, on any laptop or phone.
500+
Beginner practice bank plus checks in every Intermediate lesson — multiple choice, predict output, fix the bug, fill the blank, order lines and write code. All instant.
Py3
One compiler for both tracks. Write and run any Python program in your browser; type input() answers in the console like a real terminal. Nothing to install.
22
10 Beginner + 12 Intermediate slide decks — diagrams, tables, tips and flashcards. Same Study → Examples → Practice loop on each path.
Live
Step through code line by line in every lesson on Beginner and Intermediate. See variables change, then edit and run yourself.
2
Beginner: a quiz game you build with hints. Intermediate: a JSON expense tracker you can walk through in an internship interview.
50
XP from both tracks feeds one profile — climb 50 levels, unlock 10 badges and keep a daily streak.
In-browser Python compiler
Real Python 3 for Beginner lessons, Intermediate capstone work and anything you write on your own. When your program uses input(), you type answers in the output like a real terminal. Errors point to the line and explain the fix in plain English.
▶ Run main.py What is your name? AaravHow old are you? 12Hi Aarav! Next year you will be 13. finished in 4 ms$
03 / Compare
It’s not a video loop, and it’s not a paid program. Here’s how Mentr Learn Python compares with the usual options, row by row.
| Feature | This courseMentr Learn Python | YouTube video courses | Paid video courses | Coding classes | Docs & tutorial sites |
|---|---|---|---|---|---|
| Price | No fee, everything included | Free, with ads | Paid course fee | High fee, often monthly | Free |
| Time to learn the basics | ~8 hr Beginner · 12-lesson Intermediate path | 10–60 hours of video | 20–60+ hours of video | Months of fixed classes | No clear path |
| How you learn | You do: predict, fix and write code | You watch | You watch and copy | Group pace, set by the class | You read long pages |
| Practice with instant feedback | 500+ questions, checked instantly | None | A few quizzes | Homework, checked later | Rarely |
| Write and run code | Built-in compiler, nothing to install | Install Python yourself | Usually install yourself | On the class computer | Some have a try-it box |
| Works on a phone | Yes, including the compiler | Watch only | Watch only | No | Reading only |
| When you're stuck | Hints, error line highlighted, plain-English fix | Scroll the comments | Post in a Q&A forum | Wait for the next class | Search on your own |
| Made for beginners | Yes — college students, career switchers, Class 6+ | Mixed | Mostly for adults | Depends on the class | Written for developers |
| Progress you can see | XP, levels, badges and a verifiable certificate | None | Progress bar, certificate | Teacher feedback | None |
← Swipe to see all columns
Compares typical formats, not specific brands. Prices and course lengths vary.
Pick Beginner or Intermediate — same tools, same compiler.
Compare both tracks04 / The basics
Python is a programming language — a way to give a computer instructions it can follow. It’s known for being easy to read, which is why it’s the most popular first language for beginners.
You write a line like print("Hello"), run it, and the computer shows Hello. Every app, game and website is made of instructions like this — just many more of them.
Score counters, guessing games, quiz apps — the kind of thing you build in this course.
Parts of apps you use every day, like YouTube and Instagram, run on Python.
Most AI and machine learning tools are built with Python. So is a lot of science research.
05 / Why Python
Because it’s the easiest real programming language to start with. Python code is short and reads almost like English. Here’s the same program — show the word Hello — in Java and in Python.
Java · 5 lines
1public class Main {2 public static void main(String[] args) {3 System.out.println("Hello");4 }5}Five lines, and a lot of extra words, before anything shows on screen.
Python · 1 line
1print("Hello")One line. You can read it out loud and know exactly what it does.
if score >= 50: print("Passed") reads almost like English. You spend your time thinking about the problem, not fighting with symbols.
CBSE Computer Science and Informatics Practices in Class 11 and 12 use Python. Learning it now gives you a head start.
Websites, apps, games, data analysis and AI tools are all built with Python. It’s not a toy language.
Loops, lists and functions work the same way in Java, C++ and JavaScript. Learn them once in Python and the next language is much easier.
06 / Inside a lesson
Every Beginner and Intermediate lesson uses the same steps, so you always know what comes next. Practice ends with real code — not just multiple choice.
A new idea, explained with an everyday example.
Read a short piece of code and guess what it will do.
Build a small program step by step, with help.
Quick questions with instant feedback: predict, fix and write code.
Write a small program on your own to finish the lesson.
07 / Syllabus
New to coding? Start here. Ten lessons to your first full project. Already comfortable? Use the Test to Intermediate and jump to Intermediate.
A robot does nothing until it gets exact instructions, in the right order. Python is a way to write those instructions.
Text needs quotes. print(Hello) is an error; print("Hello") works.
Write and run a multi-line program and explain the order it runs in.
1# This is my first program2print("My name is Aarav")3print("I am 12 years old")4print("I love games")print("A")
print("B")
print("C")Which letter appears first?
A. Python runs a program from the top line down, one line at a time.
Introduce yourself in at least four lines.
A variable is a labelled box. In score = 100, score is the label on the box and 100 is what’s inside.
Names can’t start with a number or contain spaces. player_score works; 2score and player score don’t.
Store text, whole numbers, decimals and True/False, and tell the four types apart.
1name = "Aarav"2age = 123height = 5.44is_student = True56print(name, age, height, is_student)score = 10 score = 20 print(score)
What gets printed?
20. A variable holds only its latest value; the 10 is replaced.
A game player profile with name, age, score and favourite game.
Until now the program knew everything in advance. With input(), the person at the keyboard gets to answer.
% gives the remainder, not a percentage. number % 2 == 0 means the number is even.
Ask for values, convert them, and calculate with all five operators.
1num1 = int(input("First number: "))2num2 = int(input("Second number: "))34print(num1 + num2)5print(num1 - num2)6print(num1 * num2)age = input("Age: ")
print(age + 1)Why does this crash?
input() always returns text, and text can’t be added to a number. int(input("Age: ")) fixes it.
A bill calculator: enter price and quantity, print the total.
If it’s raining, take an umbrella. Otherwise, don’t. Programs make decisions the same way, one condition at a time.
= stores a value; == compares two values. Mixing them up is the most common bug in this lesson.
Write if / elif / else using all six comparison operators.
1age = int(input("Enter your age: "))23if age >= 10:4 print("You can play!")5else:6 print("You cannot play yet.")score = 72
if score >= 90:
print("Excellent")
elif score >= 70:
print("Good")
else:
print("Try again")Which word is printed?
Good. Python checks from the top and stops at the first condition that is true.
A grade checker: marks in, grade out.
You can enter the competition if you’re at least 10 and you scored at least 50. Both have to be true. This lesson is less new syntax, more thinking.
Nesting works, but two levels is usually the limit. A single and often reads more clearly.
Combine conditions with and, or and not, and decide when nesting helps.
1age = int(input("Age: "))2score = int(input("Score: "))34if age >= 10 and score >= 50:5 print("Eligible")6else:7 print("Not eligible")A = True B = False print(A and B) print(A or B) print(not A)
What are the three results?
False, True, False. and needs both; or needs one; not flips the value.
A game unlock: enough points and the right level opens the next stage.
Typing print("Hello") five times is fine. Then someone asks for five hundred.
A while loop needs something inside it to change, or it never stops.
Repeat work with for and range(), and write a while loop that ends.
1number = int(input("Enter a number: "))23for i in range(1, 11):4 print(number, "x", i, "=", number * i)for i in range(1, 4):
print(i)What gets printed?
1, 2, 3. range stops just before the end number.
A countdown: 5, 4, 3, 2, 1, GO!
To Python, the word "Python" is six characters standing in a row, numbered from 0.
Index and length are different. The last letter of a 6-letter word is at index 5, not 6.
Read, measure and change text with indexing and string methods.
1first = input("First name: ")2last = input("Last name: ")3number = input("Favourite number: ")45username = first.lower() + last[0].lower() + number6print(username)name = "Python" print(name[0]) print(len(name))
What two values are printed?
P and 6. Counting starts at 0, but len() counts every character.
A secret message transformer that changes a message in several steps.
fruit1, fruit2 and fruit3 work for three fruits. A list keeps all of them under one name, in order.
On a 3-item list, games[3] is an error. The last item is games[2].
Create a list, change it, and loop through every item.
1games = ["Minecraft", "Chess", "Roblox"]2games.append("Football")3games.remove("Chess")45for game in games:6 print(game)games = ["Minecraft", "Chess"]
games.append("Roblox")
print(len(games))What gets printed?
3. append() adds one item to the end.
A shopping list program: start with items, add one, remove one, print all.
Writing the same lines again and again? Give them a name, then call the name.
print() shows a value on screen. return hands it back so the rest of the program can use it.
Write functions with parameters and return values, and reuse them.
1def calculate_score(correct, total):2 return correct * 100 / total34result = calculate_score(8, 10)5print(result)def add(a, b):
return a + b
print(add(5, 3))What gets printed?
8. 5 and 3 go in, add() returns their sum.
Write greet(), calculate_total() and check_score(), then use all three in one program.
No video this time. A problem, a blank file, and five hints if you need them.
Get one question working first, then add the loop.
Plan and build a complete program from a blank file.
1questions = ["What does print() do?", "Comparison symbol?"]2answers = ["display text", "=="]3score = 045for i in range(len(questions)):6 reply = input(questions[i] + " ")7 if reply == answers[i]:8 score = score + 1Finish the game with your own questions and a final result message.
All 10 lessons are open. Start with Lesson 1 today.
08 / Syllabus
For placements and internships. Twelve lessons on problem-solving, data in Python, JSON, OOP and shipping — same Study → Examples → Practice loop as Beginner. Test to Intermediate or finish Beginner through Functions to unlock.
Ship like an intern: read the ticket, build a test matrix, then write pure functions that pass QA.
Skipping the test matrix is why 38.0 and 35.0 silently ship wrong in reviews.
Deliver ticket VTL-142: spec → matrix → classify_temp → green self-test run.
1def classify_temp(celsius):2 if celsius >= 38:3 return "fever"4 if celsius <= 35:5 return "too cold"6 return "normal"Make all six VTL-142 acceptance rows print OK.
Logs, SKUs, and status codes all need the same pro pattern: dict + .get + .items() + tests.
counts[word] += 1 on first sighting raises KeyError — always .get(word, 0) + 1.
Ship analytics tallies with dict equality tests and review-ready reports.
1counts[word] = counts.get(word, 0) + 1Pass LOG-201 and LOG-202 matrices; optional group-by-city.
After dict tallies: guard pipelines with seen sets, sorted unique reports, and intersection for “what’s in both?”
{} is an empty dict — use set() for an empty set; never assert on print order of a bare set.
Ship duplicate detection, distinct id reports, and tag overlap with matrix tests.
1if x in seen:2 return True3seen.add(x)Pass SET-301 and SET-302 matrices; optional SET-303 shared_tags.
Wire format → strip → split → validate → dict — then sets and tallies from earlier lessons.
Split before strip on the line; never parts[2] without len(parts) == 3 — one bad row should not kill the batch.
Parse and format simple comma rows with tests — no regex until the spec outgrows split.
1parts = [p.strip() for p in line.strip().split(",")]Pass STR-401/402 matrices; optional STR-403 multi-line ingest.
Sometimes you need a row of values that shouldn’t change — tuples and named patterns help.
t[0] = 1 fails — tuples are immutable.
Return and unpack multiple values cleanly.
1def min_max(nums):2 return min(nums), max(nums)34lo, hi = min_max([3, 1, 4])Write stats(values) returning (count, sum, average).
List comprehensions are fast to write — interviews also ask when they hurt readability.
Nested comprehensions over 2 levels — prefer a loop in real teams.
Use comprehensions when they make intent obvious.
1scores = [40, 88, 72, 91]2passed = [s for s in scores if s >= 50]Build a dict of word → length for words longer than 3 characters.
Reviewers care whether your function is pure, what it mutates, and what it returns.
Mutable defaults like def f(x=[]): — classic interview trap.
Design functions with clear inputs, outputs and no hidden mutation.
1def line_total(qty, price, tax_rate=0.18):2 return qty * price * (1 + tax_rate)Split a script into three functions with no global variables.
Production code fails — handling errors without hiding bugs is a junior dev expectation.
except: pass hides bugs — catch the exception you expect.
Handle expected errors and re-raise with context.
1def parse_int(text):2 try:3 return int(text.strip())4 except ValueError:5 raise ValueError(f"not an integer: {text!r}")Read age from input; retry once on bad input, then quit politely.
Most small tools read JSON or CSV-shaped data — even in the browser we simulate files.
JSON keys must be double-quoted strings.
Load and save structured data with json.
1import json2raw = '{"theme": "dark", "font": 14}'3settings = json.loads(raw)Parse a JSON list of tasks and print titles only.
You’re not expected to memorise everything — you are expected to know what exists.
Import only what you need — from x import * fails reviews.
Reach for the right stdlib tool instead of reinventing.
1from collections import Counter2levels = Counter(["INFO", "ERR", "INFO", "ERR", "ERR"])3print(levels.most_common(1))Count HTTP status codes from a list of strings.
Model one thing well — a Task, Expense, or Candidate — with methods that make sense.
Forgot self in method definition — TypeError at call time.
Define a small class and use it in a script.
1class Task:2 def __init__(self, title, done=False):3 self.title = title4 self.done = doneAdd mark_done() and summary() to Task.
Shipping means someone else can run your code and trust it.
assert is stripped with python -O — use real tests for production libs.
Debug from a traceback and lock behaviour with simple tests.
1def assert_equal(got, expected):2 assert got == expected, f"{got!r} != {expected!r}"Add three asserts for a function you wrote earlier.
CLI-style tool: add expenses, list, filter by category, export JSON — portfolio-ready.
Ship a working expense tracker you can walk through in an internship interview.
Lesson 1 is live; more lessons ship weekly. Unlock with placement or Beginner L9.
09 / Final project
Beginner: a quiz game you write yourself (Lesson 10). Intermediate: a JSON expense tracker you can demo in interviews. Both use hints, hidden tests and the same in-browser compiler.
Beginner · Lesson 10
PYTHON QUIZ Question 1: What does print() do?> display textCorrect! Question 2: Which symbol compares two values?> ==Correct! Your score: 8/10Excellent work!$
Variables, input, if/else, loops, lists and functions — then the Python Beginner badge and certificate path.
Intermediate · Capstone
CLI-style tool: add expenses, list, filter by category, export JSON — portfolio-ready.
Dicts, parsing, errors, JSON and OOP from the 12 Intermediate lessons — portfolio-ready for placements.
Intermediate syllabus10 / Certificate
Verifiable, and earned — not handed out. Complete the Beginner track and you get a Python Beginner certificate with your name, what you built and a unique ID recruiters can check online. Intermediate focuses on a portfolio capstone for interviews. Here’s a sample Beginner certificate.
CERTIFICATE OF COMPLETION
PYTHON BEGINNER COURSE
This certifies that
Winni
has earned the Python Beginner certificate on Mentr for completing all 9 lessons of study, solving 64 practice problems and 58 examples, and building the Final Challenge project: Mini Quiz Game.
4 February 2026
Date issued
2480 XP
Earned in the course
Verify: mentr.in/learnpython/certificate/MPY-7K2D-QX9M
Go through the Study slides in all the lessons.
Answers you reveal don’t count — only the ones you get right.
Step through programs to the last line, or hit a playground’s goal.
Write it, press Run. A working program is marked complete.
11 / Who it’s for
Beginner if you’ve never coded. Intermediate if you’re aiming at internships, projects on your résumé, or interview-style problem solving.
College students
Get comfortable with Python before your data, AI or programming courses — and have a project and a certificate to show for it.
Career switchers
Automation, analytics and AI work all start with Python. Learn the fundamentals properly, at your own pace, around your job.
School students
Python is the language of CBSE Computer Science in Class 11–12. Every lesson ends with a program you can run and show.
Younger learner? For Class 3–5, start with Mentr Learn — coding, AI and maths with no typing.
12 / FAQ
Yes. Python Beginner and Python Intermediate each issue a certificate with your name and a unique ID. Anyone can verify it at mentr.in/learnpython/certificate/your-id. Intermediate requires every lesson finished and 30% of its questions solved. Add the verify link under Licenses & certifications on LinkedIn.
Yes. If you’re in college and haven’t coded in Python yet — for placements, internships, a data or AI elective, or just to get started — Python Beginner takes you from zero to writing complete programs in about 8 hours of hands-on lessons.
Yes. Python Beginner on Mentr Learn is a full 10-lesson course with no fee. There’s no trial, no card and nothing locked behind a payment.
Yes. Python is the most popular first programming language because the code is short and easy to read. A first program is one line: print("Hello").
The basics are not hard. Python Beginner teaches one idea per lesson, starts with everyday examples, and gives you practice after every new concept. If you can follow a recipe, you can follow a Python program.
Class 6 (around age 11) is a good time to start typed Python. For younger children in Class 3–5, Mentr Learn offers coding, AI and maths lessons that don’t need typing.
Python Beginner is 10 lessons and fully self-paced. At one or two lessons a week, you’d finish the basics in about one to two months, including the final project.
No. To learn the basics you need practice, not hours of video. Python Beginner is about 8 hours of short lessons where you predict, fix and write code yourself, with 500+ questions that are checked instantly.
Yes. Every learner gets a Python compiler that runs in the browser, on laptops and phones. Write any program, press Run, and type answers to input() right in the output console. Nothing to install.
No. Lesson 1 starts from zero: what programming is and how to show text on screen with print(). Each lesson builds on the one before.
Write small programs on your own — a calculator, a grade checker, a times table, a shopping list — and a complete quiz game that uses variables, input, if/else, loops, lists and functions together.
Websites and apps, games, automating boring tasks, data analysis, science research, and artificial intelligence and machine learning. Many of the AI tools people use today are built with Python.
Python Beginner and Python Intermediate are live. Take the free placement quiz on the Learn Python page if you already know basics. Python Advanced is still in development.
Pass the 12-question placement quiz (70%+) or finish Beginner through Functions (Lesson 9). Intermediate uses the same Study → Examples → Practice flow with harder, job-focused projects.
Mentr Learn for Class 3–5 teaches computer science, AI and maths with narrated videos and block coding — no typing. Learn Python is real typed Python from the first lesson, for older students and beginners of any age.
Yes. Search Python tutors on Mentr and book an online demo from any tutor’s profile. The course stays fully open whether or not you hire a tutor.
Lesson 01
It takes about a minute to start. Every lesson, the compiler and the certificate are open to you from day one.