PYTHON

args kwargs python

>>> def argsKwargs(*args, **kwargs):
...     print(args)
...     print(kwargs)
... 
>>> argsKwargs('1', 1, 'slgotting.com', upvote='yes', is_true=True, test=1, sufficient_example=True)
('1', 1, 'slgotting.com')
{'upvote': 'yes', 'is_true': True, 'test': 1, 'sufficient_example': True}

python *args

# *args is a Variable Length Argument of type Tuple,
# which takes any number of parameters, including 0 number of arguments as well.
def variableLengthArguments(*args):
  print (sum(args))

variableLengthArguments() # Output: 0
variableLengthArguments(10) # Output: 10
variableLengthArguments(10, 20) # Output: 30
variableLengthArguments(10, 20, 30, 50, 90) # Output: 200

args in python

def add(*args):
    total = 0
    for i in args:
        total += i
    
    return total

print(add(5,5,10))

args in python

def mul(*args):  # args as argument
    multiply = 1
    for i in args:
        multiply *= i
        
    return multiply

lst = [4,4,4,4]
tpl = (4,4,4,4)    

print(mul(*lst))  # list unpacking
print(mul(*tpl)) # tuple unpacking

args in python

def func(*args):
    x = []          # emplty list
    for i in args:
        i = i * 2
        x.append(i)  
        y = tuple(x) # converting back list into tuple
    return y
        
tpl = (2,3,4,5)        
print(func(*tpl))

python *args and **kwargs

def foo(*args):
    for a in args:
        print(a)        

foo(1)
# 1

foo(1,2,3)
# 1
# 2
# 3

args in python

# if args is not passed it return message
# "Hey you didn't pass the arguements"

def ech(nums,*args):
    if args:
        return [i ** nums for i in args]  # list comprehension
    else:
        return "Hey you didn't pass args"
    
print(ech(3,4,3,2,1))

args in python

# normal parameters with *args

def mul(a,b,*args): # a,b are normal paremeters
    multiply = 1
    for i in args:
        multiply *= i
        
    return multiply

print(mul(3,5,6,7,8))   # 3 and 5 are being passed as a argument but 6,7,8 are args 

args in python

def wrap(*args):
        lis = list(args)  # it is important to convert args into list before looping, args take tuple as a argument 
        for i in range(len(lis)):
            lis[i] = lis[i] * 2
        args = tuple(lis)
        return args
print(wrap(2,3,4,5,6))

args in python

def func2(*args):
    for i in args:
        print(i * 2)
        
func2(2,3,4,5)

args in python

def display(a,b,c):
    print("arg1:", a)
    print("arg2:", b)
    print("arg3:", c)

lst = [2,3]
display(1,*lst)

args in python

# if args is not passed it return message
# "Hey you didn't pass the arguements"

def ech(num,*args):  
    if args:
        a = []
        for i in args:
            a.append(i**num)
        return a                 # return should be outside loop
    else:
        return "Hey you didn't pass the arguements"     # return should be outside loop
    
print(ech(3))

*args in Python

def myFun(arg1, *argv):
    print("First argument :", arg1)
    for arg in argv:
        print("Next argument through *argv :", arg)
 
 
myFun('Hello', 'Welcome', 'to', 'GeeksforGeeks')