Python Conditional Statements Supplemental Practice

Instructions

The information on this page is not stored. If you start an assignment, you must finish it. This page does not save your progress.

if: maybe run the body

if score >= 70:
    print("Pass")

if-else: one of two

if score >= 70:
    print("Pass")
else:
    print("Try again")

if-elif-else: one of many

if score >= 90:
    print("A")
elif score >= 80:
    print("B")
else:
    print("Keep going")

if, elif, and else are lowercase, and each line ends with a colon :
The body is indented 4 spaces. Only the indented lines belong to the if, elif, or else.
else never has a condition. It comes last.
In an if-elif-else chain, Python checks from top to bottom and runs only the first True branch.
Compare with ==, !=, >, <, >=, <=. A single = stores a value. It does not compare.
Strings need quotes: light == "yellow". Without quotes, Python thinks yellow is a variable.

SyntaxError: expected ':' means a colon is missing at the end of an if, elif, or else line.
SyntaxError: invalid syntax. Maybe you meant '==' or ':=' instead of '='? means you used = where you needed ==.
IndentationError: expected an indented block after 'if' statement on line 5 means the body is not indented.
NameError: name 'yellow' is not defined often means a string is missing its quotes.

Enter your first name, last name initial, and class period, then click Start Assignment. Your start time is recorded.
The assignment opens in a Python editor with four files (tabs). Each orange numbered box or drop down is one practice item. There are 20 items.
Click ▶ Run on any part to see what Python prints. On Parts 1 to 3, compare it with the expected output. On Part 4, Run shows what each small program prints, so you can check your predictions. Run does not grade you, so check your work carefully.
When you finish all four tabs, click Submit for Score. Your end time is recorded and your score appears. Answers cannot be changed after submitting.

Part	Task	Items	Points
1	if statements: keywords, operators, conditions, and indentation	1 to 5	5
2	if-else statements: complete, place, and fix if-else code	6 to 10	5
3	if-elif-else statements: build chains in the right order	11 to 15	5
4	Predict the output and the error message	16 to 20	5
	Total (1 point per item)	20	20

Student:

Period:

Date:

Start:

Elapsed: 00:00

Items answered: 0 of 20

conditionals_supplemental — Python 3

Task: Each program has a comment that says what it should do. Fill in every numbered box and drop down so the program works.

Item 4: the line is not indented. Add spaces at the start so it belongs to the if.
Item 5: write the whole if line yourself.

Too fast! Free shipping Welcome back Time for lunch Freezing

Task: Complete each if-else program so it matches its comment.

Not positive Can vote Go to school Game over Please log in

Task: Complete each if-elif-else chain. Remember: Python checks from top to bottom and runs only the first True branch, so order matters.

Items 13 and 14: read the rules in the comment carefully. They are not listed in the order the code needs.
Item 15: write the whole elif line yourself.

Full Silver Afternoon

Task: Trace each small program in your head.

Items 16 and 17: choose what the program prints.
Items 18 to 20: each program has a mistake. Choose the error message Python shows.

TerminalProblemsOutput

Student

Period

Date

Start time

End time

Time spent

#	Question	Your answer	Correct answer	Points	Feedback