PCEP Multiple Select — 10 Questions

Question 1

Which TWO of the following exceptions are built-in Python exceptions? (Select exactly 2)

Accepted Answer

ZeroDivisionError. ZeroDivisionError is a built-in Python exception that is raised when the second operand of a division or modulo operation is zero. It is part of Python's standard exception hierarchy and is commonly encountered in arithmetic operations.

Answer

StringError

Answer

NumberError

Answer

ListError

Question 2

Which TWO of the following expressions evaluate to True in Python? (Choose two.)

Accepted Answer

1 == True. In Python, the boolean value `True` is equal to the integer `1` due to the fact that `bool` is a subclass of `int`, and `True` is internally represented as `1`. The comparison `1 == True` evaluates to `True` because Python performs implicit type coercion, converting `True` to `1` before the equality check.

Answer

'0' == 0

Answer

2 == True

Answer

None == False

Question 3

Which THREE of the following expressions evaluate to the integer 1? (Select three.)

Accepted Answer

int(1.0). `int(1.0)` explicitly converts the float `1.0` to an integer by truncating the decimal part, yielding the integer `1`. This is a standard type conversion function in Python.

Answer

True == 1

Answer

1 * 1.0

Question 4

Which TWO of the following are valid variable names in Python? (Choose two.)

Accepted Answer

data1. 'data1' starts with a letter and contains only letters and digits, which is allowed by Python's identifier rules. Python variable names must begin with a letter (a-z, A-Z) or underscore, and can be followed by letters, digits, or underscores.

Answer

total$

Answer

my var

Answer

2nd_place

Question 5

Which TWO of the following are valid Python data types?

Accepted Answer

int. `int` is a built-in numeric data type in Python used to represent whole numbers without a fractional component. Python's `int` type has arbitrary precision, meaning it can handle arbitrarily large integers limited only by available memory.

Answer

string

Answer

char

Answer

double

Question 6

Which THREE of the following are valid ways to iterate over a list?

Accepted Answer

for i in mylist:. Python's `for i in mylist:` syntax directly iterates over each element of the list `mylist`, assigning the element value to the loop variable `i` in each iteration. This is the standard and most Pythonic way to traverse a list.

Answer

foreach i in mylist:

Answer

iter(mylist)

Question 7

Which TWO of the following are valid ways to create a tuple containing the elements 1 and 2? (Select two.)

Accepted Answer

tuple([1, 2]). `tuple([1, 2])` calls the `tuple()` constructor with a list `[1, 2]` as an argument, which converts the list into a tuple `(1, 2)`. Option E is correct because `(1, 2)` is the literal syntax for a tuple containing the elements 1 and 2.

Answer

(1)

Answer

[1, 2]

Answer

int(1)

Question 8

Which TWO of the following expressions will evaluate to True?

Accepted Answer

3 == 3.0. In Python, the '==' operator compares values, and since integers and floats are compared by numeric value, 3 and 3.0 are numerically equal, so the expression evaluates to True. Option E is correct because 'is' checks object identity, and small integers like 3 are interned by Python, meaning they refer to the same object in memory, so '3 is 3' returns True.

Answer

3 is not 3

Answer

3 > 2 and 2 > 3

Answer

3 != 3.0

Question 9

Which TWO operators in Python yield an integer result when applied to two integers?

Accepted Answer

//. The floor division operator (//) always returns an integer result when both operands are integers, discarding any fractional part. For example, 7 // 2 yields 3, not 3.5. This is because floor division performs integer division and truncates toward negative infinity, ensuring the result type is int when both inputs are int.

Answer

**

Answer

*

Answer

/

Question 10

Which three of the following statements about lists are true? (Choose three.)

Accepted Answer

Lists can be indexed with integers.. Lists in Python are ordered sequences that support indexing with integers, starting from 0 for the first element and negative integers for reverse indexing. This allows direct access to any element by its position, a fundamental feature of sequence types in Python.

Answer

Lists have a fixed size once created.

Answer

Lists can only contain elements of the same data type.