🐍 Python from scratch · Session 1

Hello, Python: print, text and comments: practice sheet

Name ____________________Date __________Score ____ / 28

Part 1: What is a program?

Remember: A program is a list of instructions for a computer. Python reads it from the top line to the bottom line, one line at a time.

1. Warm-up Print exactly: Hello, world!
2. Warm-up Print three lines: your name, your class and your school.
3. Core Print this poem exactly, on two lines:
Roses are red
Python is fun
4. Stretch 🔥 Print a triangle of stars exactly like this, one print per line:
*
**
***
****

Part 2: Text and numbers

Remember: Text inside quotes is a string. Numbers need no quotes, and Python can do maths with them: + adds, - subtracts, * multiplies, / divides.

5. Warm-up Make Python work out 25 + 17 and print the answer.
6. Core Print the sum as text on line 1 and its answer on line 2:
7 + 5
12
7. Core Print exactly: Hours in a week: 168, with Python doing the multiplying.
8. Stretch 🔥 A cinema has 18 rows of 24 seats. Print two lines, worked out by Python:
Seats: 432
Two shows: 864
9. Stretch 🔥 Asha scored 85, 90 and 77 in three tests. Print her average, worked out by Python (it should show 84.0).

Part 3: Comments, joining and repeating text

Remember: A line starting with # is a comment. Python skips it; it is a note for people.

10. Warm-up Print a line of exactly 15 # signs using * (do not type 15 of them).
11. Core Print this box exactly, using * for the dashes:
+----------+
| PYTHON |
+----------+
12. Core Print a staircase of five lines: #, ##, ###, ####, ##### (use * on every line).
13. Stretch 🔥 Write a program with at least two comment lines that prints a flag:
*****=====
*****=====
*****=====
Use * to build each line from "*" and "=".

Part 4: Reading an error and fixing it

Remember: When Python cannot understand a line it stops and shows an error with a line number.

14. Warm-up Fix the program so it prints: Good morning
```
print("Good morning)
```
15. Core Fix both lines so the program prints Hello and then World.
```
Print("Hello")
print("World"
```
16. Stretch 🔥 There are three mistakes. Fix them so the output is exactly:
Score: 10
Total: 15
Bye
```
print("Score:" 10)
print("Total:", 5 + )
print(Bye)
```

Activity 1: Name badge

17. Build a name badge one step at a time. Press Check after each step to see which parts already work.
1. Print a top border of exactly 30 = signs, using *.
2. Print NAME: followed by your name on one line.
3. Print your age, then on the next line your age in months worked out by Python (age × 12).
4. Print one hobby you love.
5. Print the bottom border, the same as the top.
```
# Step 1: top border of 30 = signs

# Step 2: NAME: and your name

# Step 3: your age, then your age in months (let Python multiply)

# Step 4: a hobby

# Step 5: bottom border
```

Activity 2: Shop receipt

18. Print a receipt that looks exactly like the one below. The total must be worked out by Python.
------------------------
SUPER STATIONERY
------------------------
Pencil 12
Notebook 45
Eraser 8
Total 65
Thank you!
1. Print a line of 24 dashes using *.
2. Print the shop name, then another line of 24 dashes.
3. Print each item and its price on its own line (use a comma between them).
4. Print Total and the sum 12 + 45 + 8, worked out by Python.
5. Print Thank you! at the end.
```
# Step 1 and 2: the header

# Step 3: the three items

# Step 4: the total (let Python add)

# Step 5: thank you
```

Activity 3: Times-table strip

19. Print the first six lines of the 7 times table, with Python doing every multiplication:
7 x 1 = 7
7 x 2 = 14
… up to 7 x 6 = 42. Then print a line of 20 stars and the line: Total of the answers: 147 (worked out by Python).
1. Print 7 x 1 = and the answer 7 * 1, using a comma.
2. Do the same for 2 to 6.
3. Print a line of 20 stars.
4. Print Total of the answers: and let Python add 7 + 14 + … + 42 (or 7 * 21).
```
# Step 1
print("7 x 1 =", 7 * 1)
# Step 2: lines for 2 to 6

# Step 3: 20 stars

# Step 4: the total
```

Predict the output

Work it out on paper first, then type it into the lesson page to check.

20. What does this print?
```
print("5 + 3")
```
21. What does this print?
```
print(5 + 3)
```
22. What does this print?
```
print("Hi", "there")
```
23. What does this print?
```
print("ab" + "c" * 3)
```
24. What does this print?
```
print(2 * 3 + 1)
```
25. What does this print?
```
print("-" * 3 + ">")
```

Homework

26. Warm-up Print a three-line address label: your name, your city and your country.
27. Core Print the number of seconds in one day, worked out by Python, with the label Seconds in a day:
28. Stretch 🔥 Print a hollow square 5 wide, using * and +:
*****
* *
* *
*****

Answer key

```
print("Hello, world!")
```

print("Asha")
print("Class 5")
print("Green Valley School")

print("Roses are red")
print("Python is fun")

print("*")
print("**")
print("***")
print("****")

```
print(25 + 17)
```
```
print("7 + 5")
print(7 + 5)
```
```
print("Hours in a week:", 24 * 7)
```

print("Seats:", 18 * 24)
print("Two shows:", 18 * 24 * 2)

```
print((85 + 90 + 77) / 3)
```
```
print("#" * 15)
```

print("+" + "-" * 10 + "+")
print("|  PYTHON  |")
print("+" + "-" * 10 + "+")

print("#" * 1)
print("#" * 2)
print("#" * 3)
print("#" * 4)
print("#" * 5)

# my flag
# three equal stripes
print("*" * 5 + "=" * 5)
print("*" * 5 + "=" * 5)
print("*" * 5 + "=" * 5)

```
print("Good morning")
```
```
print("Hello")
print("World")
```

print("Score:", 10)
print("Total:", 5 + 10)
print("Bye")

# Step 1
print("=" * 30)
# Step 2
print("NAME: Kabir")
# Step 3
print("Age:", 11)
print("Age in months:", 11 * 12)
# Step 4
print("I love: football")
# Step 5
print("=" * 30)

print("-" * 24)
print("SUPER STATIONERY")
print("-" * 24)
print("Pencil", 12)
print("Notebook", 45)
print("Eraser", 8)
print("Total", 12 + 45 + 8)
print("Thank you!")

print("7 x 1 =", 7 * 1)
print("7 x 2 =", 7 * 2)
print("7 x 3 =", 7 * 3)
print("7 x 4 =", 7 * 4)
print("7 x 5 =", 7 * 5)
print("7 x 6 =", 7 * 6)
print("*" * 20)
print("Total of the answers:", 7 + 14 + 21 + 28 + 35 + 42)

5 + 3
8
Hi there
abccc
7
--->

print("Kabir")
print("Pune")
print("India")

print("Seconds in a day:", 24 * 60 * 60)

print("*" * 5)
print("*" + " " * 3 + "*")
print("*" + " " * 3 + "*")
print("*" * 5)