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Useful Converting

The int() function can be useful if you're working with numerical data. For instance, imagine that we have a lot of numbers that need to be modified, but all of them have a string data type. This code leads to an error:


              1234
            
value = "123"
new_value = value + 10

print(new_value)

Here, Python tries to concatenate the strings, but indeed its functionality doesn't allow it to do so, since 10 is related to the integer data type (concatenation can be applied only to strings).

To correctly sum these numbers, you should initially transform the string into an integer using int() function:


              1234
            
value = "123"
new_value = int(value) + 10

print(new_value)

Task

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You're working on a small e-commerce platform. Users submit product prices through a form — but all the values are passed as strings.

Before saving the data or performing calculations, you need to convert the prices into integers, adjust them, and store the updated values in new variables.

Convert the string value of price_laptop to an integer, add 15, and store the result in new_price_laptop.
Convert the string value of price_headphones to an integer, add 780, and store the result in new_price_headphones.
Convert the string value of price_monitor to an integer, subtract 90, and store the result in new_price_monitor.

All final results must be stored as int values.

Solution

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Section 4. Chapter 2

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Useful Converting


              1234
            
value = "123"
new_value = value + 10

print(new_value)

Here, Python tries to concatenate the strings, but indeed its functionality doesn't allow it to do so, since 10 is related to the integer data type (concatenation can be applied only to strings).

To correctly sum these numbers, you should initially transform the string into an integer using int() function:


              1234
            
value = "123"
new_value = int(value) + 10

print(new_value)

Task

Swipe to start coding

You're working on a small e-commerce platform. Users submit product prices through a form — but all the values are passed as strings.

Before saving the data or performing calculations, you need to convert the prices into integers, adjust them, and store the updated values in new variables.

Convert the string value of price_laptop to an integer, add 15, and store the result in new_price_laptop.
Convert the string value of price_headphones to an integer, add 780, and store the result in new_price_headphones.
Convert the string value of price_monitor to an integer, subtract 90, and store the result in new_price_monitor.

All final results must be stored as int values.

Solution

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Thanks for your feedback!

Section 4. Chapter 2

Switch to desktop for real-world practiceContinue from where you are using one of the options below