A developer is writing a financial calculation and needs to compare the result of `0.1 + 0.2` to `0.3`. The developer is surprised that the comparison returns False. What is the most appropriate way to handle this situation?

Convert both values to integers before comparing.

Use the is operator to compare the values.

Use round() to compare the values to a reasonable precision.

Use the == operator directly, as floating-point arithmetic is exact.

Python InstitutePCEP - Certified Entry-Level Python Programmer

Domain 1Objective 4

PCEP-30-02 1.4 Choose Operators and Data Types Adequate to the Problem PCEP-30 Practice Questions (Page 1)

Part of the Computer Programming and Python Fundamentals domain, which accounts for 18% of the PCEP-30 exam. Python Institute does not publish an official question count, but from its 45-minute exam (~20–30 total, ~4–5 in this domain), expect 1–1 from this objective — we provide 26 practice questions to prepare you well beyond it. (estimate)

26questions here

6free pages

11concepts

18%of the exam

Questions 1–5

1foundation · easy
Which of the following expressions uses a unary operator?
Select an answer first
2application · medium
A developer is writing a financial calculation and needs to compare the result of `0.1 + 0.2` to `0.3`. The developer is surprised that the comparison returns False. What is the most appropriate way to handle this situation?
Select an answer first
3foundation · easy
What is the value of x after executing the following code? x = 10 x //= 3
Select an answer first
4application · easy
A developer is reading user input as a string and needs to perform arithmetic. The variable `user_input` contains the string '42'. The developer wants to add 8 to this value. Which line of code correctly performs the addition?
Select an answer first
5application · easy
A developer is writing a validation check. The variable `age` is 25 and `has_license` is True. The developer wants to allow access if the user is at least 18 years old AND has a license. Which expression correctly implements this check?
Select an answer first

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PCEP-30-02 1.4 Choose Operators and Data Types Adequate to the Problem PCEP-30 Practice Questions (Page 1)

Questions 1–5

Which of the following expressions uses a unary operator?

A developer is writing a financial calculation and needs to compare the result of `0.1 + 0.2` to `0.3`. The developer is surprised that the comparison returns False. What is the most appropriate way to handle this situation?

What is the value of x after executing the following code? x = 10 x //= 3

A developer is reading user input as a string and needs to perform arithmetic. The variable `user_input` contains the string '42'. The developer wants to add 8 to this value. Which line of code correctly performs the addition?

A developer is writing a validation check. The variable `age` is 25 and `has_license` is True. The developer wants to allow access if the user is at least 18 years old AND has a license. Which expression correctly implements this check?

Keep studying — Computer Programming and Python Fundamentals