pythonbeginner

Python Basics Quiz

Test your understanding of Python fundamentals: syntax, types, control flow, and built-in functions.

7 questions

By EZ4Code TeamLast updated: 2026-08-01

1. Which of the following is the correct way to create a variable in Python?

# Option A
name = "Alice"

# Option B
let name = "Alice"

# Option C
var name = "Alice"

# Option D
string name = "Alice"

name = "Alice"

let name = "Alice"

var name = "Alice"

string name = "Alice"

Explanation: Python is dynamically typed, so you assign a value directly with `name = "Alice"` — no `let`, `var`, or type declaration needed. `let`/`var` are JavaScript keywords, and `string name` is C#/Java syntax.

2. What is the output of the following code?

print(type(3.14))

Explanation: Python calls decimal numbers `float` (not `double` like Java/C). `3.14` is a float literal. There is no `number` type in Python — integers use `int` and decimals use `float`.

3. How do you start a comment in Python?

Explanation: Python uses `#` for single-line comments. `//` is JavaScript/Java/C, `/* */` is block comment syntax in those languages, and `--` is SQL/Lua.

4. What does the `len()` function return for the string `"hello"`?

print(len("hello"))

Error

Explanation: `len()` returns the number of characters. `"hello"` has 5 characters (h-e-l-l-o). Python strings are 0-indexed but `len()` counts total characters, not the last index.

5. Which collection type does NOT allow duplicate values?

list

tuple

set

dict (keys can duplicate)

Explanation: A `set` automatically removes duplicates — it stores only unique values. Lists and tuples allow duplicates. Dictionary keys must be unique (so duplicates are silently overwritten), but the question asks which type does not ALLOW duplicates — sets enforce uniqueness by design.

6. What will this code print?

for i in range(3):
    print(i, end=" ")

1 2 3

0 1 2

0 1 2 3

1 2

Explanation: `range(3)` produces 0, 1, 2 (start at 0, stop BEFORE 3). The `end=" "` replaces the default newline with a space, so output is `0 1 2 `.