Python

Lets review python built in functions

Cython

In Python, functions can take various types of arguments. These include:

1. Positional Arguments

2. Keyword Arguments

3. Default Arguments

4. Variable-Length Arguments

Let's go through each type with examples:

1. Positional Arguments

Positional arguments are the most common type. The values are assigned to parameters in the order they are passed.

def greet(name, age):

    print(f"Hello, my name is {name} and I am {age} years old.")

greet("Alice", 30)  # Output: Hello, my name is Alice and I am 30 years old.

m 30 years old.

2. Keyword Arguments

Keyword arguments are passed with the parameter names explicitly. This allows arguments to be passed in a different order.

def greet(name, age):

    print(f"Hello, my name is {name} and I am {age} years old.")

greet(age=30, name="Alice")  # Output: Hello, my name is Alice and I am 30 years old.

def greet(name, age):

    print(f"Hello, my name is {name} and I am {age} years old.")

greet(age=30, name="Alice")  # Output: Hello, my name is Alice and I am 30 years old.

d I am 30 years old.

3. Default Arguments

Default arguments are used when you want a parameter to have a default value if no argument is provided.

def greet(name, age=25):

    print(f"Hello, my name is {name} and I am {age} years old.")

greet("Alice")  # Output: Hello, my name is Alice and I am 25 years old.

greet("Bob", 30)  # Output: Hello, my name is Bob and I am 30 years old.

4. Variable-Length Arguments

*args

*args allows a function to accept any number of positional arguments. These arguments are accessible as a tuple.

def greet(*names):

    for name in names:

        print(f"Hello, {name}!")

greet("Alice", "Bob", "Charlie")  

# Output:

# Hello, Alice!

# Hello, Bob!

# Hello, Charlie!

Hello, Charlie!

**kwargs

**kwargs allows a function to accept any number of keyword arguments. These arguments are accessible as a dictionary.

def greet(**kwargs):

    for key, value in kwargs.items():

        print(f"{key}: {value}")

greet(name="Alice", age=30, city="New York")  

# Output:

# name: Alice

# age: 30

# city: New York

Combining Different Types of Arguments

You can combine different types of arguments in a function. The order of parameters must be:

1. Positional arguments

2. *args

3. Keyword arguments

4. **kwargs

ars old. # Hello, Bob! You are 30 years old. # city: New York # hobby: reading

def greet(greeting, *names, age=30, **kwargs):

    for name in names:

        print(f"{greeting}, {name}! You are {age} years old.")

    for key, value in kwargs.items():

        print(f"{key}: {value}")

greet("Hello", "Alice", "Bob", city="New York", hobby="reading")

# Output:

# Hello, Alice! You are 30 years old.

# Hello, Bob! You are 30 years old.

# city: New York

# hobby: reading