Python Institute Professional Python Programmer Level 1 (PCPP1) Certification Sample Questions

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Python Institute PCPP1 Sample Questions:

01. When writing function names according to PEP 8, which style should be used?

a) CamelCase

b) snake_case

c) UPPERCASE

d) kebab-case

02. Your team is documenting an API using Python's built-in tools. Which standard should be followed for writing docstrings?

a) Use PEP 8 naming conventions.

b) Follow PEP 20 for code clarity.

c) Apply PEP 257 for writing docstrings.

d) Use PEP 484 for compatibility checks.

03. A junior developer asks for guidance on documenting code using type hints. Which standard should you recommend?

a) PEP 8

b) PEP 20

c) PEP 257

d) PEP 484

04. You are developing a class where instances need to maintain a unique ID. Which approach would ensure this without duplicating IDs?

a) Generate IDs using hash() on the object.

b) Define __init__ and assign IDs randomly.

c) Use a class attribute to track the last assigned ID.

d) Use a dictionary with IDs as keys.

05. What is the best description of inheritance in Python?

a) A mechanism to store data in a class.

b) A technique to create new classes by extending existing ones.

c) A feature to prevent data duplication.

d) A system for managing data attributes.

06. Your tkinter application needs to display a list of items for users to select. Which widget should you use?

a) OptionMenu

b) Menu

c) Listbox

d) Combobox

07. Which method is used to open a file for both reading and writing in text mode?

a) open(file, "r")

b) open(file, "w")

c) open(file, "a")

d) open(file, "r+")

08. You need to fetch all records from a database using sqlite3. Which method should you use after executing the query?

a) fetchone()

b) fetchall()

c) fetchmany()

d) getrows()

09. A user reported that button clicks in your application are not triggering any action. What is the most likely cause?

a) Incorrect command callback function.

b) The button text is not set.

c) The button is not visible.

d) The application loop is inactive.

10. Your project includes extensive internal APIs. Which standard ensures proper documentation practices for public methods?