Question

Rewrite the following statements using augmented assignment operators: a) quantity = quantity + 1 b) days_left = days_left ? 5 c) price = price * 10 d) price = price / 2

Short answer

5 (typo) Corrected Original Statement: days_left = days_left - 5 Rewritten Statement: days_left -= 5 3. Rewrite the given multiplication statement using an augmented assignment operator. Original Statement: price = price * 10 Rewritten Statement: price *= 10 4. Rewrite the given division statement using an augmented assignment operator. Original Statement: price = price / 2 Rewritten Statement: price /= 2

Step-by-step solution

a) Rewrite the addition statement using augmented assignment operator

The addition statement, 'quantity = quantity + 1', can be rewritten using the '+=' augmented assignment operator. This simplifies the statement and performs the same operation. Here's the rewritten statement: ``` quantity += 1 ```

b) Rewrite the subtraction statement using augmented assignment operator

There is a typo in the original statement ('days_left = days_left ? 5'). It should be 'days_left = days_left - 5'. To rewrite the subtraction statement using the augmented assignment operator, we should use the '-=' operator. Here's the corrected and rewritten statement: ``` days_left -= 5 ```

c) Rewrite the multiplication statement using augmented assignment operator

The multiplication statement 'price = price * 10' can be rewritten using the '*=' augmented assignment operator. This simplifies the statement and performs the same operation. Here's the rewritten statement: ``` price *= 10 ```

d) Rewrite the division statement using augmented assignment operator

The division statement 'price = price / 2' can be rewritten using the '/=' augmented assignment operator. This simplifies the statement and performs the same operation. Here's the rewritten statement: ``` price /= 2 ```

Key concepts

Augmented Assignment Operators

In Python programming, augmented assignment operators are a concise way to update the value of a variable based on its current value. These operators combine a binary operation and an assignment in one step, simplifying the code.
For example, instead of writing `x = x + 1`, you can write `x += 1`, which performs the addition and updates `x` all at once. This not only shortens the code but also improves readability.
Common augmented assignment operators include:

• `+=` for addition
• `-=` for subtraction
• `*=` for multiplication
• `/=` for division

Using these operators can make your code more elegant and easier to understand, especially when performing multiple operations on the same variable.

Variable Manipulation

Variable manipulation in programming refers to altering the value stored in a variable. This is a fundamental concept because it allows programs to perform calculations, store results, and perform tasks dynamically. In essence, variables are storage locations in programming languages that hold data which can be modified as needed.
Consider variables as placeholders for data that your programs can change or update based on the requirements of the logic you implement. When you use augmented assignment operators, you are doing just this – altering the variable's value without repeating the variable name.
Ensuring proper variable manipulation is essential, especially in larger programs, to maintain efficient and correct function operation. This keeps your program's data flow organized and comprehensible.

Arithmetic Operations

Arithmetic operations are basic mathematical operations that include addition, subtraction, multiplication, and division. Understanding arithmetic operations is crucial in any programming language, as they form the basis of many algorithms and data processing routines.
Python supports these operations directly using symbols:

• `+` for addition
• `-` for subtraction
• `*` for multiplication
• `/` for division

These operations can be combined with variables to perform calculations dynamically. For example, calculating a new price after a discount or updating the quantity of an item as it is used are common tasks.
By combining arithmetic operations with augmented assignment operators, you can efficiently update variable values and streamline your code, making it both shorter and easier to follow.