print() parameters and formatting in Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print the words separated by a space.

Python

print('Hello', 'World', sep=[1])

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

A''

B'-'

C','

D' '

Attempts:

3 left

💡 Hint

Common Mistakes

Using a comma ',' as separator prints a comma between words.

Using empty quotes '' prints words without space.

The sep parameter defines the separator between items. Using a space ' ' prints words separated by a space.

2fill in blank

medium

Complete the code to print numbers on the same line separated by a dash.

Python

print(1, 2, 3, sep=[1], end='\n')

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

A'-'

B','

C''

D' '

Attempts:

3 left

💡 Hint

Common Mistakes

Using a comma ',' prints commas between numbers.

Using empty quotes '' prints numbers without any separator.

The sep parameter sets the separator between printed items. Using '-' prints numbers separated by dashes.

3fill in blank

hard

Fix the error in the code to print two words without a space between them.

Python

print('Hello', 'World', sep=[1])

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

A''

B','

C' '

D'_'

Attempts:

3 left

💡 Hint

Common Mistakes

Using a space ' ' prints words with a space.

Using a comma ',' prints a comma between words.

Using an empty string '' as the separator prints words directly next to each other without spaces.

4fill in blank

hard

Fill both blanks to print numbers 1 to 3 separated by a comma and ending with an exclamation mark.

Python

print(1, 2, 3, sep=[1], end=[2])

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

A','

B'!'

C'\n'

D' '

Attempts:

3 left

💡 Hint

Common Mistakes

Using space ' ' as separator prints spaces instead of commas.

Using '\n' as end prints a newline instead of exclamation.

The sep parameter sets commas between numbers, and end adds an exclamation mark at the end instead of a newline.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that maps uppercase words to their lengths, only for words longer than 3 letters.

Python

result = { [1]: [2] for word in words if len(word) [3] 3 }

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

Aword.upper()

Blen(word)

C>

Dword

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'word' as key instead of uppercase.

Using '<' instead of '>' in condition.

This comprehension creates keys as uppercase words and values as their lengths, filtering words longer than 3 letters.

Practice

1. What does the sep parameter do in the print() function?

easy

A. It changes the separator between multiple items printed.

B. It changes the ending character of the printed line.

C. It formats numbers inside the print statement.

D. It pauses the program before printing.

Solution

1. Step 1: Understand the role of sep

   The sep parameter defines what string is placed between multiple items printed.

2. Step 2: Compare with other parameters

   end changes line ending, formatting is done by f-strings, and pausing is unrelated.

3. Final Answer:

   It changes the separator between multiple items printed. -> Option A

4. Quick Check:

   sep = separator [OK]

Hint: Remember: sep controls spacing between items [OK]

Common Mistakes:

• Confusing sep with end parameter
• Thinking sep formats numbers
• Assuming sep pauses output

2. Which of the following is the correct syntax to print two words separated by a dash using print()?

easy

A. print('hello' - 'world')

B. print('hello' + 'world', sep='-')

C. print('hello', 'world', end='-')

D. print('hello', 'world', sep='-')

Solution

1. Step 1: Identify correct use of sep

   Using sep='-' between multiple arguments prints them separated by a dash.

2. Step 2: Check syntax correctness

   print('hello', 'world', sep='-') uses correct syntax. print('hello' + 'world', sep='-') concatenates strings before printing, ignoring sep. print('hello', 'world', end='-') uses end, which changes line ending, not separator. print('hello' - 'world') is invalid syntax.

3. Final Answer:

   print('hello', 'world', sep='-') -> Option D

4. Quick Check:

   sep='-' joins words with dash [OK]

Hint: Use sep between items, not inside strings [OK]

Common Mistakes:

• Using + operator with sep parameter
• Confusing sep with end
• Trying to subtract strings

3. What is the output of this code?

print('A', 'B', 'C', sep='*', end='!')
print('D')

medium

A. A*B*C!D

B. A B C ! D

C. A*B*C
D

D. A B C!D

Solution

1. Step 1: Analyze first print()

   It prints 'A', 'B', 'C' separated by '*', ending with '!'. So output is 'A*B*C!'

2. Step 2: Analyze second print()

   It prints 'D' on the same line because first print ended with '!' (no newline).

3. Final Answer:

   A*B*C!D -> Option A

4. Quick Check:

   sep='*', end='!' joins and ends line [OK]

Hint: Remember end='' keeps output on same line [OK]

Common Mistakes:

• Assuming default space separator
• Thinking end adds newline
• Ignoring end parameter effect

4. The following code prints 'Score:-10'. What is the fix to print 'Score: 10'?

print('Score:', score, sep='-')

Assuming score = 10.

medium

A. Convert score to string before printing.

B. Change sep to end parameter.

C. Remove sep parameter or use it correctly between multiple items.

D. Add parentheses around score.

Solution

1. Step 1: Understand sep usage

   The sep='-' parameter places '-' between 'Score:' and score, resulting in 'Score:-10'.

2. Step 2: Identify the fix

   To print 'Score: 10' with default space separator, remove the sep parameter.

3. Final Answer:

   Remove sep parameter or use it correctly between multiple items. -> Option C

4. Quick Check:

   remove sep -> default space [OK]

Hint: Use sep only when printing multiple items [OK]

Common Mistakes:

• Confusing sep with end parameter
• Trying to convert variables unnecessarily
• Using sep with single string

5. How can you print the number 7.12345 rounded to 2 decimal places using print() and f-strings?

hard

A. print(f'{7.12345:2f}')

B. print(f'{7.12345:.2f}')

C. print(f'{7.12345:.2}')

D. print(f'{7.12345:.f2}')

Solution

1. Step 1: Understand f-string formatting

   To round a float to 2 decimals, use :.2f inside the braces.

2. Step 2: Check each option

   print(f'{7.12345:.2f}') uses correct syntax {value:.2f}. print(f'{7.12345:2f}') misses the dot before 2. print(f'{7.12345:.2}') uses wrong format specifier. print(f'{7.12345:.f2}') has incorrect order.

3. Final Answer:

   print(f'{7.12345:.2f}') -> Option B

4. Quick Check:

   Use .2f to round floats in f-strings [OK]

Hint: Use .2f inside f-string to round floats [OK]

Common Mistakes:

• Omitting the dot before precision
• Using wrong format specifiers
• Mixing order of letters and numbers