Skill Check
Python Skill Check
12 questions across every topic of the Python track. You get your level, a score for each topic and what to learn next.
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Question 1 of 12
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Getting Started What does this print?a = input() # user types 10
b = input() # user types 20
print(a + b)
A 30 B 1020 C Error D 10 20
Getting Started What is the output of print(7 // 2, 7 % 2)?
A 3.5 1 B 3 1 C 3 0 D 4 1
Getting Started Which is true about Python strings?
A They are mutable B They are immutable C They can only use double quotes D They cannot be indexed
Getting Started What does "Python"[-1] return?
A "P" B "n" C An error D "o"
Logic & Functions What does range(10, 0, -3) produce?
A 10, 7, 4, 1 B 10, 7, 4, 1, -2 C 10, 7, 4 D 0, 3, 6, 9
Logic & Functions When does the else block of a for loop run?
A Always B Only if the loop ends without break C Only if break was used D Never — it is invalid syntax
Logic & Functions What is printed?def f(x):
print(x * 2)
y = f(4)
print(y)
A 8 then 8 B 8 then None C None then 8 D Error
Logic & Functions Why is def add(item, items=[]) risky?
A Lists cannot be parameters B The same default list is shared across calls C It is slower D It causes a SyntaxError
Working with Data Which safely returns "NA" when the key "phone" is missing from dict d?
A d["phone"] B d.get("phone", "NA") C d.phone D d.find("phone")
Working with Data What does [n * n for n in range(4) if n % 2 == 0] produce?
A [0, 4] B [0, 1, 4, 9] C [4, 16] D [1, 9]
Working with Data Which statement about with open(...) as f is true?
A You must call f.close() yourself B The file is closed automatically when the block ends C It only works for CSV files D It reads the whole file automatically
Working with Data Which exception does int("abc") raise?
A TypeError B ValueError C KeyError D NameError
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