In [1]:

    

l = [1,2,3,4]
a = l
a.append(5)


    

In [2]:

    

print l


    

    




[1, 2, 3, 4, 5]

In [3]:

    

print id(l)
print id(a)


    

    




52229824
52229824

In [4]:

    

a = list(l)


    

In [5]:

    

print id(a)


    

    




52229704

In [6]:

    

a = l[::1]


    

In [7]:

    

print id(a)


    

    




50120944

In [8]:

    

#deepcopy
#shallowcopy


    

In [9]:

    

import copy
print dir(copy)


    

    




['Error', 'PyStringMap', '_EmptyClass', '__all__', '__builtins__', '__doc__', '__file__', '__name__', '__package__', '_copy_dispatch', '_copy_immutable', '_copy_inst', '_copy_with_constructor', '_copy_with_copy_method', '_deepcopy_atomic', '_deepcopy_dict', '_deepcopy_dispatch', '_deepcopy_inst', '_deepcopy_list', '_deepcopy_method', '_deepcopy_tuple', '_keep_alive', '_reconstruct', '_test', 'copy', 'deepcopy', 'dispatch_table', 'error', 'name', 't', 'weakref']

In [10]:

    

a = copy.copy(l)


    

In [11]:

    

print id(a)


    

    




52231224

In [12]:

    

print id(l)


    

    




52229824

In [13]:

    

print a,l


    

    




[1, 2, 3, 4, 5] [1, 2, 3, 4, 5]

In [14]:

    

a.append(5)


    

In [15]:

    

print a,l


    

    




[1, 2, 3, 4, 5, 5] [1, 2, 3, 4, 5]

In [16]:

    

a=l


    

In [17]:

    

l.append(5)


    

In [18]:

    

print a,l


    

    




[1, 2, 3, 4, 5, 5] [1, 2, 3, 4, 5, 5]

In [22]:

    

c = copy.deepcopy(l)


    

In [23]:

    

print c,l


    

    




[1, 2, 3, 4, 5, 5] [1, 2, 3, 4, 5, 5]

In [24]:

    

l.append(10)


    

In [25]:

    

print c,l


    

    




[1, 2, 3, 4, 5, 5] [1, 2, 3, 4, 5, 5, 10]

In [26]:

    

c.append(15)


    

In [27]:

    

print c,l


    

    




[1, 2, 3, 4, 5, 5, 15] [1, 2, 3, 4, 5, 5, 10]

In [ ]: