A parser must split a string on the first occurrence of a delimiter, but only if the delimiter is present. If the delimiter is absent, the entire string should be returned as a single-element list. Which code snippets correctly implement this? (Select all that apply.)

parts = s.split(delim, 1) if delim in s else [s]

parts = [s] if delim not in s else s.split(delim, 1)

A data validation function must check that a username contains only letters and digits, and that it does not contain the substring 'admin' anywhere. Which condition correctly implements this?

if username.isalnum() and username.index('admin') == -1:

if username.isdigit() and username.find('admin') == -1:

if username.isalpha() and username.find('admin') == -1:

if username.isalnum() and username.find('admin') == -1:

A list of strings contains a mix of uppercase and lowercase words. The requirement is to sort the list so that all words starting with a digit come first, then the rest in alphabetical order (case-insensitive). Which code achieves this?

sorted_words = sorted(words, key=lambda w: (w[0].isdigit(), w.lower()))

sorted_words = sorted(words, key=lambda w: (not w[0].isdigit(), w.lower()))

sorted_words = sorted(words, key=lambda w: w.isdigit())

sorted_words = sorted(words, key=lambda w: w.lower())

A configuration file has lines like ' port=8080 ' with extra spaces around the key-value pair. A script must extract the value '8080' and ensure no surrounding whitespace. Which code snippets correctly accomplish this? (Select all that apply.)

value = line.rstrip().split('=')[1]

value = line.split('=')[1].strip()

value = line.lstrip().split('=')[1]

value = line.strip().split('=')[1]

Python InstitutePCAP - Certified Associate Python Programmer

Domain 3Objective 3

PCAP-31-03 3.3 Employ Built-In String Methods PCAP-31 Practice Questions (Page 6)

Part of the Strings domain, which accounts for 18% of the PCAP-31 exam. Python Institute does not publish an official question count, but from its 65-minute exam (~25–45 total, ~5–8 in this domain), expect 2–3 from this objective — we provide 55 practice questions to prepare you well beyond it. (estimate)

55questions here

11free pages

8concepts

18%of the exam

Questions 26–30

26expert · medium · select all that apply
A parser must split a string on the first occurrence of a delimiter, but only if the delimiter is present. If the delimiter is absent, the entire string should be returned as a single-element list. Which code snippets correctly implement this? (Select all that apply.)
Select an answer first
27application · medium
A data validation function must check that a username contains only letters and digits, and that it does not contain the substring 'admin' anywhere. Which condition correctly implements this?
Select an answer first
28expert · hard
A list of strings contains a mix of uppercase and lowercase words. The requirement is to sort the list so that all words starting with a digit come first, then the rest in alphabetical order (case-insensitive). Which code achieves this?
Select an answer first
29application · medium · select all that apply
A configuration file has lines like ' port=8080 ' with extra spaces around the key-value pair. A script must extract the value '8080' and ensure no surrounding whitespace. Which code snippets correctly accomplish this? (Select all that apply.)
Select an answer first
30application · easy
A file path string is 'C:/Users/John/Documents/report.txt'. A script needs to find the position of the last slash to extract the filename. Which method should be used?
Select an answer first

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