Interview question

What are *args and **kwargs used for in Python functions? Python functions में *args और **kwargs किस लिए इस्तेमाल होते हैं?

Answer

Syntax	Collects	Accessed as
*args	Extra positional arguments	Tuple
**kwargs	Extra keyword arguments	Dictionary

def describe(*args, **kwargs):
    print('Positional:', args)
    print('Keyword:', kwargs)

describe(1, 2, 3, name='John', age=30)
# Positional: (1, 2, 3)
# Keyword: {'name': 'John', 'age': 30}

# Practical use: flexible function signatures
def sum_all(*numbers):
    return sum(numbers)
print(sum_all(1, 2, 3, 4))  # 10

# Unpacking when CALLING a function
def greet(name, greeting):
    return f'{greeting}, {name}'

args_list = ['John', 'Hello']
kwargs_dict = {'name': 'John', 'greeting': 'Hello'}
print(greet(*args_list))    # unpacks list as positional args
print(greet(**kwargs_dict)) # unpacks dict as keyword args

# Combining with regular parameters (order matters)
def func(a, b, *args, **kwargs):
    print(a, b, args, kwargs)
func(1, 2, 3, 4, x=5, y=6)  # 1 2 (3, 4) {'x': 5, 'y': 6}

Syntax	क्या collect करता है	Access
*args	Extra positional arguments	Tuple
**kwargs	Extra keyword arguments	Dictionary

def describe(*args, **kwargs):
    print('Positional:', args)
    print('Keyword:', kwargs)

describe(1, 2, 3, name='John', age=30)
# Positional: (1, 2, 3)
# Keyword: {'name': 'John', 'age': 30}

def sum_all(*numbers):
    return sum(numbers)
print(sum_all(1, 2, 3, 4))  # 10

# Function call करते समय unpacking
def greet(name, greeting):
    return f'{greeting}, {name}'

args_list = ['John', 'Hello']
kwargs_dict = {'name': 'John', 'greeting': 'Hello'}
print(greet(*args_list))
print(greet(**kwargs_dict))

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