In [8]:

    

x = 7 
y = 5


    

In [9]:

    

x + y


    

    
Out[9]:





12

In [10]:

    

x


    

    
Out[10]:





7

In [11]:

    

y


    

    
Out[11]:





5

In [17]:

    

def add_numbers(x,y,z):
    return x+y+z

print(add_numbers(1,2,3))
s= False
s


    

    




6






    




---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
<ipython-input-17-c240a53826e8> in <module>()
      3 
      4 print(add_numbers(1,2,3))
----> 5 s= Flase
      6 s

NameError: name 'Flase' is not defined

In [16]:

    

def add_numbers(x,y,z= 'none'):
    if z=='none':
        return x+y
    else:
        return x+y+z
print(add_numbers(1,2))
print(add_numbers(1,2,3))


    

    




3
6

In [19]:

    

def add_numbers(x,y,z='none',flag=False):
    if flag:
        print("The flag is True")
    if z=='none':
        return x+y
    else:
        return x+y+z
    
print(add_numbers(1,2))
print(add_numbers(1,2,3)) 
print(add_numbers(1,2,3,True))


    

    




3
6
The flag is True
6

In [20]:

    

def add_num(x,y):
    return x+y;
a = add_num
a(3,4)


    

    
Out[20]:





7

In [ ]: