Free Python Institute PCED Exam Questions

Become Python Institute Certified with updated PCED exam questions and correct answers

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Total 382 Questions | Updated On: Dec 17, 2025

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Question 1

You have a DataFrame df that contains duplicate rows. Your task is to remove duplicates based on two columns: 'A' and 'B'. What is the correct line of code to remove such duplicates while keeping the first occurrence?

A : df.drop_duplicates(subset=['A', 'B'], keep=False)

B : df.drop_duplicates()

C : df.unique(subset=['A', 'B'])

D : df.drop_duplicates(subset=['A', 'B'], keep='first')

Answer: D

Question 2

Which of the following libraries in Python is not commonly used for web scraping to collect data?

A : Scrapy

B : Selenium

C : Pandas

D : BeautifulSoup

Answer: C

Question 3

When using Python's requests library to collect data from a website through HTTP requests, which status code indicates that the requested resource has been moved permanently?

A : 403

B : 404

C : 200

D : 301

Answer: D

Question 4

Given a DataFrame df:df = pd.DataFrame({ 'A': [1, 2, 3], 'B': [4, 5, 6]})You want to square each individual element in the DataFrame. Which of the following code will accomplish this?

A : df.applymap(lambda x: x**2)

B : df['A'].apply(lambda x: x**2)

C : df.map(lambda x: x**2)

D : df.apply(lambda x: x**2, axis=1)

Answer: A

Question 5

You are given a DataFrame df with a column 'Date' of type string in the format 'YYYY-MM-DD'. You want to filter the rows where the year is 2020. Which of the following code snippets is the most efficient way to do so?

A : df[pd.to_datetime(df['Date']).dt.year == 2020]

B : df[df['Date'].str.contains('2020')]

C : df[df['Date'].str.slice(0, 4) == '2020']

D : df[df['Date'].apply(lambda x: x.split('-')[0]) == '2020']

Answer: C

Page: 1 / 77

Total 382 Questions | Updated On: Dec 17, 2025

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