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

The purpose of this Sample Question Set is to provide you with information about the Python Institute Certified Professional Python Programmer Level 1 exam. These sample questions will make you very familiar with both the type and the difficulty level of the questions on the PCPP1 certification test. To get familiar with real exam environment, we suggest you try our Sample Python Institute Professional Python Programmer Level 1 Certification Practice Exam. This sample practice exam gives you the feeling of reality and is a clue to the questions asked in the actual Python Institute Certified Professional Python Programmer Level 1 (PCPP1) certification exam.

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Python Institute PCPP1 Sample Questions:

01. Consider the following code:

import socket

s = socket.socket()

s.connect(('localhost', 9999))

What does executing this code do?

a) Reserves port 9999 on the local host for the life of this process

b) Starts a server that waits for clients to arrive on port 9999

c) Opens the connection and transmits whatever output is already buffered

d) Opens a client connection to port 9999 on the local host, or raises if nothing is listening

02. A base class must guarantee that every concrete subclass supplies its own implementation of a method, with the requirement enforced by the interpreter. Which approach achieves this?

a) Define the method as a @property or a descriptor so subclasses must override it.

b) Raise NotImplementedError from the base class method body and document the requirement.

c) Decorate the method with @abstractmethod in a class that derives from ABC.

d) Declare the method with @staticmethod so that subclasses are required to redefine it.

03. Which of the following data formats can be parsed with a module that ships in the Python standard library?

(Choose three.)

a) JSON, through json.loads()

b) YAML, through yaml.safe_load()

c) CSV, through csv.DictReader

d) XML, through xml.etree.ElementTree

04. What does the following code print?

with open("notes.txt", "w+") as f:

f.write("Hello")

print(f.read())

a) Hello, because w+ allows the text just written to be read back

b) An empty line, because the file position sits at the end of the text

c) An io.UnsupportedOperation error, because the handle is write-only

d) None, because read() returns None when the file has no data left

05. Which mode string opens an existing file for both reading and writing, keeps its current contents, and positions the stream at the beginning of the file?

a) 'r+'

b) 'w+'

c) 'a+'

d) 'r'

06. An application must keep its records in one local file and query them with SQL, without running a separate database server. Which standard-library module provides this?

a) sqlite3

b) csv

c) pickle

d) shelve

07. Which characteristics apply to HTTP communication in a REST architecture?

(Choose three.)

a) Requires persistent connections

b) Uses methods like GET and POST

c) Stateless communication

d) Uses TCP as transport

08. A handler function func() takes one argument. Which form wires a tkinter Button so that clicking it calls func(arg)?

a) command=lambda: func(arg)

b) command=func, args=(arg,)

c) command=func(arg)

d) command=lambda arg: func(arg)

09. Which statement correctly describes what mainloop() does in a tkinter application?

a) It redraws every widget once and returns, so it belongs inside a while loop.

b) It moves event handling onto a background thread so the main thread can continue.

c) It blocks where it is called and dispatches events until the window is destroyed.

d) It creates the root window and then returns control to the next statement.

10. The following script is run from a terminal. What happens?

import tkinter as tk

root = tk.Tk()

btn = tk.Button(root, text="Click")

btn.pack()

a) The button is displayed and answers clicks until the window is closed

b) The window opens and stays on screen with the button unresponsive

c) A TclError is raised because the button was given no command callback

d) The script reaches its end and exits without ever servicing the window

Answers:

Question: 01 Answer: d	Question: 02 Answer: c	Question: 03 Answer: a, c, d	Question: 04 Answer: b	Question: 05 Answer: a
Question: 06 Answer: a	Question: 07 Answer: b, c, d	Question: 08 Answer: a	Question: 09 Answer: c	Question: 10 Answer: d

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