DHS AP CSP Midterm Review

Which function reads a line of user input as a string in Python?

• input()
• read()
• scan()
• gets()

Answer explanation

`input()` returns a string from standard input.

What does `print('A', 'B')` output by default?

• AB
• A B
• A, B
• ['A','B']

Answer explanation

Multiple arguments to print are space-separated.

Which is a syntax error in Python?

• print('hi')
• x = 3
• if True print('ok')
• a_b = 1

Answer explanation

An `if` requires a colon and an indented block.

What does `type(3.0)` return?

• <class 'int'>
• <class 'float'>
• <class 'str'>
• <class 'bool'>

Answer explanation

3.0 is a float.

Which is a valid Python comment?

• // comment
• # comment
• /* comment */
• <!-- comment -->

Answer explanation

Python uses `#` for single-line comments.

Which statement is true about indentation in Python?

• Optional for style only
• Defines code blocks
• Only required in functions
• Only required in loops

Answer explanation

Indentation defines block structure in Python.

What happens with `print('5' + '6')`?

• 11
• 56
• TypeError
• None

Answer explanation

String concatenation yields '56'.

Which call will print exactly `Hello\nWorld` (two lines)?

• print('Hello\nWorld')
• print('Hello/World')
• print('Hello n World')
• print('Hello\World')

Answer explanation

`\n` is the newline escape.

Which built-in converts the string '42' to an integer?

• str('42')
• int('42')
• float(42)
• bool('42')

Answer explanation

`int('42')` converts to an integer.

Which expression is valid Python?

• print 'hi'
• print('hi')
• echo('hi')
• say('hi')

Answer explanation

Python 3 requires parentheses in `print()`.