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Introduction to Python
course content

Course Content

Introduction to Python

Introduction to Python

1. First Acquaintance
The Very First StepsCommentsSome Simple MathMore Challenging MathChallengeBringing It All Together
2. Variables and Types
Storing NumbersNaming RulesUsing VariablesData TypesNumbersChallengeStoring TextString IndexingNegative Indexing and LengthString SlicingChallengeConcatenation
3. Conditional Statements
Boolean Data TypeChallenge: Comparison OperatorsCombining ConditionsChallenge: Logical OperatorsMembership Operators and Types ComparisonSimple if/else ExpressionsChallenge: Grocery StoreChallenge: Odd and Evenif/elif/else ExpressionsChallenge: Grocery Store ExtendedChallenge: Positive, Negative or Zero
4. Other Data Types
What Is a List?List MethodsChallengeNested ListsChallengeWhat Is a Tuple?Tuple MethodsChallengeNested TuplesChallengeWhat Is a Dictionary?ChallengeDictionary MethodsChallenge
5. Loops
while LoopChallengefor LoopChallengeRangeChallengeIterating Over IndexesNested Loops
6. Functions
Built-in FunctionsChallengeDefining Your First FunctionChallengeif/else Statements in FunctionsChallengeFunctions With No ReturnChallengeModifying FunctionsChallengeLambda FunctionsChallenge

bookUsing Variables

In the first lesson of this section, you set up a variable named chapter. Now, how can we tweak or change variables we've already set up? The good news is, you can adjust them just like you did with the values in the previous lessons.

Let's say you've got the cost of an item saved in the price variable and you want to apply a 15% discount. You can simply reassign the updated value like this:


              
123

            
price = 50 # Initial price
price = price * (1 - 0.15) # Applying the discount
print(price)
copy

Task

Since you first set up the chapter variable, you've gone through two more chapters. Add 2 to the chapter variable and reassign this new value to it.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 2. Chapter 3
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bookUsing Variables

In the first lesson of this section, you set up a variable named chapter. Now, how can we tweak or change variables we've already set up? The good news is, you can adjust them just like you did with the values in the previous lessons.

Let's say you've got the cost of an item saved in the price variable and you want to apply a 15% discount. You can simply reassign the updated value like this:


              
123

            
price = 50 # Initial price
price = price * (1 - 0.15) # Applying the discount
print(price)
copy

Task

Since you first set up the chapter variable, you've gone through two more chapters. Add 2 to the chapter variable and reassign this new value to it.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 2. Chapter 3
toggle bottom row

bookUsing Variables

In the first lesson of this section, you set up a variable named chapter. Now, how can we tweak or change variables we've already set up? The good news is, you can adjust them just like you did with the values in the previous lessons.

Let's say you've got the cost of an item saved in the price variable and you want to apply a 15% discount. You can simply reassign the updated value like this:


              
123

            
price = 50 # Initial price
price = price * (1 - 0.15) # Applying the discount
print(price)
copy

Task

Since you first set up the chapter variable, you've gone through two more chapters. Add 2 to the chapter variable and reassign this new value to it.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

In the first lesson of this section, you set up a variable named chapter. Now, how can we tweak or change variables we've already set up? The good news is, you can adjust them just like you did with the values in the previous lessons.

Let's say you've got the cost of an item saved in the price variable and you want to apply a 15% discount. You can simply reassign the updated value like this:


              
123

            
price = 50 # Initial price
price = price * (1 - 0.15) # Applying the discount
print(price)
copy

Task

Since you first set up the chapter variable, you've gone through two more chapters. Add 2 to the chapter variable and reassign this new value to it.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Section 2. Chapter 3
Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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