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Python Functions Tutorial
course content

Course Content

Python Functions Tutorial

Python Functions Tutorial

1. What is Function in Python?
What Is Function?Challenge: Building functionsArgumentsReturn ValueFunction BodyBuilt-in Functions
2. Positional and Optional Arguments
Positional ArgumentsChallenge: Positional ArgumentsOptional ArgumentsChallenge: Optional Arguments
3. Arbitrary Arguments
Arbitrary ArgumentsArbitrary Keyword ArgumentsCombination of Positional and Optional Arguments
4. Function Return Value Specification
Single Return ValueMultiple Return ValuesNone Return ValueGenerator FunctionsChallenge: Traffic lights
5. Recursion and Lambda Functions
RecursionChallenge: PyramidLambda FunctionsImmediately Invoked Lambda ExpressionWriting Effective and Maintainable Functions

bookLambda Functions

Lambda functions are anonymous functions, meaning they don't have a name. They are created using the lambda keyword. Lambda functions are often used to define short functions where you can specify a function on the spot.

The basic syntax of a lambda function is as follows:

  • lambda: The keyword indicating the start of a lambda function definition;
  • arguments: The list of arguments the function takes;
  • expression: The expression executed when the function is called. The result of the expression is returned as the function's value.

The key feature of lambda functions is their concise syntax. They are convenient when you need to define a simple function without writing a lot of code. 


              
123

            
square = lambda x: x**2
result = square(5)
print(result)
copy

Task

Fill in the blanks in the code (___) to:

  1. Create a lambda function that takes two parameters, x and y.
  2. The lambda function should return the sum of x and y.
  3. Call the lambda function with the arguments 3 and 5.

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 5. Chapter 3
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bookLambda Functions

Lambda functions are anonymous functions, meaning they don't have a name. They are created using the lambda keyword. Lambda functions are often used to define short functions where you can specify a function on the spot.

The basic syntax of a lambda function is as follows:

  • lambda: The keyword indicating the start of a lambda function definition;
  • arguments: The list of arguments the function takes;
  • expression: The expression executed when the function is called. The result of the expression is returned as the function's value.

The key feature of lambda functions is their concise syntax. They are convenient when you need to define a simple function without writing a lot of code. 


              
123

            
square = lambda x: x**2
result = square(5)
print(result)
copy

Task

Fill in the blanks in the code (___) to:

  1. Create a lambda function that takes two parameters, x and y.
  2. The lambda function should return the sum of x and y.
  3. Call the lambda function with the arguments 3 and 5.

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 5. Chapter 3
toggle bottom row

bookLambda Functions

Lambda functions are anonymous functions, meaning they don't have a name. They are created using the lambda keyword. Lambda functions are often used to define short functions where you can specify a function on the spot.

The basic syntax of a lambda function is as follows:

  • lambda: The keyword indicating the start of a lambda function definition;
  • arguments: The list of arguments the function takes;
  • expression: The expression executed when the function is called. The result of the expression is returned as the function's value.

The key feature of lambda functions is their concise syntax. They are convenient when you need to define a simple function without writing a lot of code. 


              
123

            
square = lambda x: x**2
result = square(5)
print(result)
copy

Task

Fill in the blanks in the code (___) to:

  1. Create a lambda function that takes two parameters, x and y.
  2. The lambda function should return the sum of x and y.
  3. Call the lambda function with the arguments 3 and 5.

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!

Lambda functions are anonymous functions, meaning they don't have a name. They are created using the lambda keyword. Lambda functions are often used to define short functions where you can specify a function on the spot.

The basic syntax of a lambda function is as follows:

  • lambda: The keyword indicating the start of a lambda function definition;
  • arguments: The list of arguments the function takes;
  • expression: The expression executed when the function is called. The result of the expression is returned as the function's value.

The key feature of lambda functions is their concise syntax. They are convenient when you need to define a simple function without writing a lot of code. 


              
123

            
square = lambda x: x**2
result = square(5)
print(result)
copy

Task

Fill in the blanks in the code (___) to:

  1. Create a lambda function that takes two parameters, x and y.
  2. The lambda function should return the sum of x and y.
  3. Call the lambda function with the arguments 3 and 5.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Section 5. 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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