In [1]:

    

def hello():
    print('Hello')


    

In [2]:

    

hello()


    

    




Hello

In [3]:

    

def add(a, b):
    return a + b


    

In [4]:

    

x = add(3, 4)
print(x)


    

    




7

In [5]:

    

def print_add(a, b, c):
    print('a = ', a)
    print('b = ', b)
    print('c = ', c)
    print('a + b + c = ', a + b + c)


    

In [6]:

    

print_add(1, 10, 100)


    

    




a =  1
b =  10
c =  100
a + b + c =  111

In [7]:

    

# print_add(1)
# TypeError: print_add() missing 2 required positional arguments: 'b' and 'c'


    

In [8]:

    

# print_add(1, 10, 100, 1000)
# TypeError: print_add() takes 3 positional arguments but 4 were given


    

In [9]:

    

print_add(b=10, c=100, a=1)


    

    




a =  1
b =  10
c =  100
a + b + c =  111

In [10]:

    

print_add(1, c=100, b=10)


    

    




a =  1
b =  10
c =  100
a + b + c =  111

In [11]:

    

# print_add(a=1, 10, 100)
# SyntaxError: positional argument follows keyword argument


    

In [12]:

    

def print_add_default(a, b, c=100):
    print('a = ', a)
    print('b = ', b)
    print('c = ', c)
    print('a + b + c = ', a + b + c)


    

In [13]:

    

print_add_default(1, 10)


    

    




a =  1
b =  10
c =  100
a + b + c =  111

In [14]:

    

print_add_default(1, 10, 200)


    

    




a =  1
b =  10
c =  200
a + b + c =  211

In [15]:

    

# def print_add_default(a=1, b, c=100):
#     ...
# SyntaxError: non-default argument follows default argument


    

In [16]:

    

def func_args(*args):
    print(args)


    

In [17]:

    

func_args(1, 10)


    

    




(1, 10)

In [18]:

    

func_args(1, 10, 100, 1000)


    

    




(1, 10, 100, 1000)

In [19]:

    

def func_kwargs(**kwargs):
    print(kwargs)


    

In [20]:

    

func_kwargs(a=1, b=10)


    

    




{'a': 1, 'b': 10}

In [21]:

    

func_kwargs(c=1, b=10, d=1000, a=100)


    

    




{'c': 1, 'b': 10, 'd': 1000, 'a': 100}

In [22]:

    

def print_add(a, b, c):
    print('a = ', a)
    print('b = ', b)
    print('c = ', c)
    print('a + b + c = ', a + b + c)


    

In [23]:

    

l = [1, 10, 100]

print_add(*l)


    

    




a =  1
b =  10
c =  100
a + b + c =  111

In [24]:

    

l = [1, 10]

# print_add(*l)
# TypeError: print_add() missing 1 required positional argument: 'c'


    

In [25]:

    

d = {'a': 1, 'b': 10, 'c': 100}

print_add(**d)


    

    




a =  1
b =  10
c =  100
a + b + c =  111

In [26]:

    

d = {'a': 1, 'b': 10, 'x': 100}

# print_add(**d)
# TypeError: print_add() got an unexpected keyword argument 'x'


    

In [27]:

    

def func_return(a, b):
    return a + b


    

In [28]:

    

x = func_return(3, 4)

print(x)
print(type(x))


    

    




7
<class 'int'>

In [29]:

    

x = func_return(0.3, 0.4)

print(x)
print(type(x))


    

    




0.7
<class 'float'>

In [30]:

    

def func_return_multi(a, b):
    return a + b, a * b, a / b


    

In [31]:

    

x = func_return_multi(3, 4)

print(x)
print(type(x))


    

    




(7, 12, 0.75)
<class 'tuple'>

In [32]:

    

x, y, z = func_return_multi(3, 4)

print(x)
print(y)
print(z)


    

    




7
12
0.75

In [33]:

    

def func_return_multi_list(a, b):
    return [a + b, a * b, a / b]


    

In [34]:

    

x = func_return_multi_list(3, 4)

print(x)
print(type(x))


    

    




[7, 12, 0.75]
<class 'list'>

In [35]:

    

x, y, z = func_return_multi_list(3, 4)

print(x)
print(y)
print(z)


    

    




7
12
0.75