Python Interactive Mode vs Script Mode - Interactive Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print 'Hello, world!' in script mode.

Python

print([1])

Drag options to blanks, or click blank then click option'

A"Hello world"

BHello, world!

C'Hello, world!'

DHello world

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting to put quotes around the text.

Using unquoted text which causes a NameError.

In Python, strings must be enclosed in quotes. Using quotes around 'Hello, world!' makes it a string literal that print() can output.

2fill in blank

medium

Complete the code to assign the number 5 to variable x in script mode.

Python

x = [1]

Drag options to blanks, or click blank then click option'

A"5"

B5

C'five'

Dfive

Attempts:

3 left

💡 Hint

Common Mistakes

Putting quotes around numbers, making them strings.

Using words instead of digits for numbers.

To assign a number, write the number without quotes. Quotes make it a string, which is different from a number.

3fill in blank

hard

Fix the error in the interactive mode code to correctly print the sum of 2 and 3.

Python

print([1])

Drag options to blanks, or click blank then click option'

A2 + 3

B"2 + 3"

C2 plus 3

Dsum(2, 3)

Attempts:

3 left

💡 Hint

Common Mistakes

Putting the expression inside quotes, which prints text instead of calculating.

Using incorrect function calls like sum(2, 3) which causes errors.

In interactive mode, you can write expressions like 2 + 3 directly to get the result 5. Using quotes prints the text, not the sum.

4fill in blank

hard

Fill both blanks to create a dictionary comprehension that includes only even numbers from 1 to 5.

Python

evens = {x: x[1]2 for x in range(1, 6) if x [2] 2 == 0}

Drag options to blanks, or click blank then click option'

A**

B%

C//

D+

Attempts:

3 left

💡 Hint

Common Mistakes

Using + instead of ** for squaring.

Using // instead of % for checking even numbers.

The expression x**2 squares x. The condition x % 2 == 0 checks if x is even by seeing if the remainder when divided by 2 is zero.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that converts keys to uppercase, keeps values, and filters values greater than 0.

Python

result = { [1]: [2] for k, v in data.items() if v [3] 0 }

Drag options to blanks, or click blank then click option'

Ak.upper()

Bv

C>

Dk

Attempts:

3 left

💡 Hint

Common Mistakes

Using k instead of k.upper() for keys.

Using < instead of > for filtering values.

k.upper() converts keys to uppercase. We keep the value v as is. The condition v > 0 filters only positive values.

Practice

1. What is the main difference between Python interactive mode and script mode?

easy

A. Interactive mode is slower than script mode.

B. Interactive mode runs files; script mode runs commands one by one.

C. Interactive mode runs commands one by one; script mode runs a whole file at once.

D. Script mode shows results immediately after each command.

Solution

1. Step 1: Understand interactive mode behavior

   Interactive mode lets you type and run one command at a time and see the result immediately.

2. Step 2: Understand script mode behavior

   Script mode runs a saved file with many lines of code all at once, not line-by-line interactively.

3. Final Answer:

   Interactive mode runs commands one by one; script mode runs a whole file at once. -> Option C

4. Quick Check:

   Interactive = one command, Script = whole file [OK]

Hint: Interactive = one command; script = whole file run [OK]

Common Mistakes:

• Confusing which mode runs commands one by one
• Thinking script mode shows immediate results after each line
• Believing interactive mode runs whole files

2. Which of the following is the correct way to start Python in interactive mode from a terminal?

easy

A. python script.py

B. python

C. python -i script.py

D. python run script.py

Solution

1. Step 1: Identify command to start interactive mode

   Typing python alone in the terminal starts Python in interactive mode.

2. Step 2: Understand other options

   python script.py runs a script, python -i script.py runs script then interactive, and python run script.py is invalid syntax.

3. Final Answer:

   python -> Option B

4. Quick Check:

   Just type python to start interactive mode [OK]

Hint: Type 'python' alone to start interactive mode [OK]

Common Mistakes:

• Using 'python script.py' to start interactive mode
• Confusing flags like -i without understanding
• Typing invalid commands like 'python run script.py'

3. What will be the output if you run this code in interactive mode line by line?

print('Hello')
2 + 3
print('Done')

medium

A. Hello\nDone

B. Hello\n3\nDone

C. Hello\nNone\nDone

D. Hello\n5\nDone

Solution

1. Step 1: Analyze print statements in interactive mode

   print('Hello') outputs Hello immediately. print('Done') outputs Done immediately.

2. Step 2: Understand expression evaluation in interactive mode

   Typing 2 + 3 alone in interactive mode shows 5 as output.

3. Final Answer:

   Hello\n5\nDone -> Option D

4. Quick Check:

   Only print outputs show in script; interactive shows expression results [OK]

Hint: Only print() shows output in script; expressions show in interactive [OK]

Common Mistakes:

• Expecting expression results printed in script mode
• Confusing expression output with print output
• Thinking 2 + 3 prints 5 without print()

4. You run a Python script file but get no output, even though it has print statements. What is a likely cause?

medium

A. You forgot to save the script file before running it.

B. You typed commands one by one instead of running the file.

C. You ran the script in interactive mode instead of script mode.

D. You used print statements incorrectly.

Solution

1. Step 1: Check how script files run

   Script mode runs the saved file. If the file is not saved, changes won't run.

2. Step 2: Understand why no output appears

   If you forgot to save, the old file runs without new print statements, so no output.

3. Final Answer:

   You forgot to save the script file before running it. -> Option A

4. Quick Check:

   Unsaved file runs old code, no new output [OK]

Hint: Always save script files before running [OK]

Common Mistakes:

• Confusing interactive mode with script mode
• Thinking typing commands one by one runs script
• Assuming print statements are always wrong

5. You want to test a small piece of code quickly before adding it to your program. Which mode should you use and why?

hard

A. Use interactive mode because it lets you try commands one by one immediately.

B. Use interactive mode because it saves your code automatically.

C. Use script mode because it shows output after each line automatically.

D. Use script mode because it runs the whole program faster.

Solution

1. Step 1: Identify purpose of testing small code

   Testing small code quickly means running commands one by one and seeing results immediately.

2. Step 2: Match mode to purpose

   Interactive mode allows typing and running commands one at a time and seeing output immediately, perfect for quick tests.

3. Final Answer:

   Use interactive mode because it lets you try commands one by one immediately. -> Option A

4. Quick Check:

   Interactive mode = quick command testing [OK]

Hint: Interactive mode is best for quick command tests [OK]

Common Mistakes:

• Thinking script mode runs commands one by one
• Believing script mode shows output after each line automatically
• Assuming interactive mode saves code automatically