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Intermediate Python Techniques

bookUsing **kwargs in Python: Flexible Keyword Arguments for Dynamic Functions

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")
copy

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)
copy

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?

question mark

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

Select the correct answer

question mark

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

Select the correct answer

question mark

Given the function definition below, which call is valid?

Select the correct answer

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bookUsing **kwargs in Python: Flexible Keyword Arguments for Dynamic Functions

Pyyhkäise näyttääksesi valikon

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.


              
1234567

            
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")
copy

The correct order for the arguments is as follows:

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

              
1234

            
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)
copy

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?

question mark

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

Select the correct answer

question mark

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

Select the correct answer

question mark

Given the function definition below, which call is valid?

Select the correct answer

Oliko kaikki selvää?

Miten voimme parantaa sitä?

Kiitos palautteestasi!

Osio 2. Luku 4
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