🎯 Python skill test

10 questions. One honest answer. The right place to start.

Forget guessing whether to open lesson 1 or Senior Deep-Dives. Pick the answer for each question — we'll grade and recommend the lesson, path, or capstone that actually matches your level. Takes 5 minutes, no signup, no card.

0 / 10 answered

Question 1 of 10

Which of these prints exactly: Hello, Anna!

name = "Anna"

print("Hello, {name}!")print(f"Hello, {name}!")print("Hello, " + name)print("Hello, name!")

Question 2 of 10

What does type(3.14) return?

Question 3 of 10

What does len([1, 2, 3, [4, 5]]) return?

345TypeError

Question 4 of 10

Which of these raises TypeError?

t = (1, 2, 3); t[0]t = (1, 2, 3); len(t)t = (1, 2, 3); t[0] = 5t = (1, 2, 3); t + (4,)

Question 5 of 10

Build {0: 0, 1: 1, 2: 4, 3: 9, 4: 16}.

{i: i*i for i in range(5)}[i: i*i for i in range(5)]{for i in range(5): i: i*i}dict(i, i*i for i in range(5))

Question 6 of 10

Given def f(*args, **kwargs): ..., what does f(1, 2, x=3) bind?

args=(1, 2), kwargs={'x': 3}args=[1, 2, 3], kwargs={}args=(1, 2, 3), kwargs={'x': 3}TypeError

Question 7 of 10

What does 'hello'[::-1] return?

'hello''olleh'''IndexError

Question 8 of 10

Inside an inner function, which keyword lets you rebind a variable from the enclosing (non-global) function?

globalnonlocalouterenclosing

Question 9 of 10

After two calls f() then f(), what does f return the second time?

def f(x=[]):
    x.append(1)
    return x

[1][1, 1][]TypeError

Question 10 of 10

Why doesn't pure-Python multithreading speed up a CPU-bound loop in CPython?

threading is single-threaded by designthe GIL serialises bytecode execution to one thread at a timePython doesn't have a threading moduleall Python code is async

How we grade. Each of the 10 questions targets one concept across four difficulty bands (basics, intermediate, advanced, senior). Your score buckets you into Beginner (0–3), Intermediate (4–6), Advanced (7–8), or Senior (9–10) and we route you to the lesson or path that picks up where you are. No newsletter signup gate, no email harvesting.