GU D335 Introduction to Programming in
W
Python OA Final Exam Official Practice Exam
Actual Exam 2026/2027 with Detailed
Rationales | Complete Exam-Style Questions |
Pass Guaranteed – A+ Graded
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SECTION 1: PYTHON FUNDAMENTALS & SYNTAX Q1 – Q10
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Question 1 of 50
total =
A developer is building a tip calculator and writes the following line of code:
input("Enter amount: ") * 1.15
. When testing the program,it crashes
immediately. What is the most accurate explanation for this behavior?
. The input() function returns a string, and Python cannot multiply a string by a float,
A
resulting in a TypeError. ✓ CORRECT
B. The input() function automatically converts the entry to a float, so the code runs
correctly.
C. The * operator concatenates the string "1.15" to the user's input repeatedly.
D. Python implicitly casts the input to a numeric type when it detects a mathematical
operator.
Correct Answer: A
,Rationale: The input() function always returns a string object in Python, and attempting
to multiply a string by a floating-point number raises a TypeError because these types
are incompatible for that operation. The expression would need explicit conversion
using float(input("Enter amount: ")) to perform numeric multiplication. Remember that
Python never implicitly converts types during arithmetic operations, so explicit casting
is essential when working with user input.
Question 2 of 50
A program needs to display employee information in a formatted table. The developer
f"{name:<12}{salary:.2f}"
uses the following f-string: .Which statement
accurately describes the formatting behavior?
. It right-aligns the name in a 12-character field and rounds the salary to two decimal
A
places.
B. It left-aligns the name in a 12-character field and formats the salary to exactly two
decimal places. ✓ CORRECT
C. It centers the name within a 12-character field and truncates the salary to a whole
number.
D. It limits the name to 12 characters maximum and displays the salary in scientific
notation.
Correct Answer: B
<alignment specifier in Python f-stringsleft-aligns the value within the
Rationale: The
:.2fformats a floating-pointnumber to exactly two decimal
specified width, while
>
places. The right-align specifier would use , andtruncation would require a different
<is left,
precision format. When building formatted reports, remember that >is right,
^is center for string alignment.
and
,Question 3 of 50
if not
An access control system uses the following logic to determine entry:
(user_banned or not age_valid): grant_access()
. Underwhich
combination of conditions will access be granted?
. When user_banned is True and age_valid is True.
A
B. When user_banned is True and age_valid is False.
C. When user_banned is False and age_valid is True. ✓ CORRECT
D. When user_banned is False and age_valid is False.
Correct Answer: C
not (user_banned
Rationale: Applying De Morgan's laws to or not age_valid)
not user_banned and age_valid
yields , meaning accessrequires the user to not
be banned while also having a valid age. The most tempting wrong answer is D, which
age_validmust be True for the inner
fails because not age_validto be False,
satisfying the overall negated condition. When simplifying complex boolean logic, break
down nested negations methodically to avoid sign errors.
Question 4 of 50
A junior developer is refactoring legacy code and needs to rename several variables to
follow Python conventions. The team lead rejects one of the proposed names because
it violates Python's identifier rules. Which variable name is syntactically invalid?
. _private_var
A
B. total_amount
C. data2
, D. 2nd_value ✓ CORRECT
Correct Answer: D
2nd_valueviolates the
Rationale: Python identifiers cannot begin with a digit, so
lexical rules and would raise a SyntaxError, whereas names starting with underscores or
letters are valid. The other options are perfectly valid identifiers, with leading
underscores conventionally indicating internal use. Remember that while Python allows
digits within identifiers, they must never appear as the first character.
Question 5 of 50
A physics student writes a formula to calculate the average of two test scores:
average = score_a + score_b / 2
. If score_a is 90and score_b is 96, what
value will average hold?
. 138.0 ✓ CORRECT
A
B. 93.0
C. 186.0
D. 96.0
Correct Answer: A
Rationale: Python follows standard operator precedence where division occurs before
90 + (96
addition, so the expression evaluates as / 2) 90 + 48.0or
, which equals
138.0
. The expected average of 93.0 would requireparentheses around the addition:
(score_a + score_b) / 2
. Always verify arithmetic expressions against the order
of operations, as missing parentheses are among the most common logic errors in
mathematical formulas.
W
Python OA Final Exam Official Practice Exam
Actual Exam 2026/2027 with Detailed
Rationales | Complete Exam-Style Questions |
Pass Guaranteed – A+ Graded
═════════════════════════════════════
═
SECTION 1: PYTHON FUNDAMENTALS & SYNTAX Q1 – Q10
══════════════════════════════════════
Question 1 of 50
total =
A developer is building a tip calculator and writes the following line of code:
input("Enter amount: ") * 1.15
. When testing the program,it crashes
immediately. What is the most accurate explanation for this behavior?
. The input() function returns a string, and Python cannot multiply a string by a float,
A
resulting in a TypeError. ✓ CORRECT
B. The input() function automatically converts the entry to a float, so the code runs
correctly.
C. The * operator concatenates the string "1.15" to the user's input repeatedly.
D. Python implicitly casts the input to a numeric type when it detects a mathematical
operator.
Correct Answer: A
,Rationale: The input() function always returns a string object in Python, and attempting
to multiply a string by a floating-point number raises a TypeError because these types
are incompatible for that operation. The expression would need explicit conversion
using float(input("Enter amount: ")) to perform numeric multiplication. Remember that
Python never implicitly converts types during arithmetic operations, so explicit casting
is essential when working with user input.
Question 2 of 50
A program needs to display employee information in a formatted table. The developer
f"{name:<12}{salary:.2f}"
uses the following f-string: .Which statement
accurately describes the formatting behavior?
. It right-aligns the name in a 12-character field and rounds the salary to two decimal
A
places.
B. It left-aligns the name in a 12-character field and formats the salary to exactly two
decimal places. ✓ CORRECT
C. It centers the name within a 12-character field and truncates the salary to a whole
number.
D. It limits the name to 12 characters maximum and displays the salary in scientific
notation.
Correct Answer: B
<alignment specifier in Python f-stringsleft-aligns the value within the
Rationale: The
:.2fformats a floating-pointnumber to exactly two decimal
specified width, while
>
places. The right-align specifier would use , andtruncation would require a different
<is left,
precision format. When building formatted reports, remember that >is right,
^is center for string alignment.
and
,Question 3 of 50
if not
An access control system uses the following logic to determine entry:
(user_banned or not age_valid): grant_access()
. Underwhich
combination of conditions will access be granted?
. When user_banned is True and age_valid is True.
A
B. When user_banned is True and age_valid is False.
C. When user_banned is False and age_valid is True. ✓ CORRECT
D. When user_banned is False and age_valid is False.
Correct Answer: C
not (user_banned
Rationale: Applying De Morgan's laws to or not age_valid)
not user_banned and age_valid
yields , meaning accessrequires the user to not
be banned while also having a valid age. The most tempting wrong answer is D, which
age_validmust be True for the inner
fails because not age_validto be False,
satisfying the overall negated condition. When simplifying complex boolean logic, break
down nested negations methodically to avoid sign errors.
Question 4 of 50
A junior developer is refactoring legacy code and needs to rename several variables to
follow Python conventions. The team lead rejects one of the proposed names because
it violates Python's identifier rules. Which variable name is syntactically invalid?
. _private_var
A
B. total_amount
C. data2
, D. 2nd_value ✓ CORRECT
Correct Answer: D
2nd_valueviolates the
Rationale: Python identifiers cannot begin with a digit, so
lexical rules and would raise a SyntaxError, whereas names starting with underscores or
letters are valid. The other options are perfectly valid identifiers, with leading
underscores conventionally indicating internal use. Remember that while Python allows
digits within identifiers, they must never appear as the first character.
Question 5 of 50
A physics student writes a formula to calculate the average of two test scores:
average = score_a + score_b / 2
. If score_a is 90and score_b is 96, what
value will average hold?
. 138.0 ✓ CORRECT
A
B. 93.0
C. 186.0
D. 96.0
Correct Answer: A
Rationale: Python follows standard operator precedence where division occurs before
90 + (96
addition, so the expression evaluates as / 2) 90 + 48.0or
, which equals
138.0
. The expected average of 93.0 would requireparentheses around the addition:
(score_a + score_b) / 2
. Always verify arithmetic expressions against the order
of operations, as missing parentheses are among the most common logic errors in
mathematical formulas.
