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Intermediate Python Techniques
course content

Course Content

Intermediate Python Techniques

Intermediate Python Techniques

1. Packing and Unpacking
UnpackingPackingPacking and Unpacking UsageChallenge: Dictionary UnpackingChallenge: The Champions League
2. Arguments in Function
Arguments Overview*argsChallenge: Average Mark**kwargsChallenge: kwargs
3. Function as an Argument
High-Order FunctionsLambda FunctionBuilt-in Functions
4. Variable Scope
Global VariableLocal VariableChallenge: Modifying a Global VariableNested FunctionsNonlocal VariableClosuresChallenge: Threshold Checker
5. Decorators
Introduction to DecoratorsSyntaxChallenge: Create Your DecoratorDecorators with ParametersChaining DecoratorsChallenge: Basic Smores RecipePractical Examples of Decorator Usage

book**kwargs

Now, let's move on to keyword arbitrary arguments or **kwargs. The principle of how **kwargs works is the same as for *args, but it accepts keyword arguments instead of positional ones. **kwargs packs information into a dictionary, so we will work with it accordingly.


              
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def personal_info(name, **kwargs):
    print(f"Name: {name}")
    for key, value in kwargs.items():
        print(f"{key.capitalize()}: {value}")

personal_info("Sarah", surname="Conor", son="John")
personal_info("Natalie", cats="3", breed="Maine Coon")
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The correct order for the arguments is as follows:

  1. Positional
  2. Optional
  3. *args
  4. **kwargs

              
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def new_func(a, b=0, *args, **kwargs):
	print(f'a = {a}, b = {b}, args = {args}, kwargs = {kwargs}')

new_func(1, 2, 'Love', 'Hope', name='Anna', age=20)
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If you want to unpack dictionaries, you need to use ** before the dictionary variable.

1. What does **kwargs in a Python function signature represent?
2. What will print_details(name="Alice", age=30) output?
3. Given the function definition below, which call is valid?
What does **kwargs in a Python function signature represent?

What does **kwargs in a Python function signature represent?

Select the correct answer

What will print_details(name="Alice", age=30) output?

What will print_details(name="Alice", age=30) output?

Select the correct answer

Given the function definition below, which call is valid?

Given the function definition below, which call is valid?

Select the correct answer

Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 2. Chapter 4
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