In [1]:

    

print "Hello World!"


    

    




Hello World!

In [2]:

    

x=1


    

In [3]:

    

dir(x)


    

    
Out[3]:





['__abs__',
 '__add__',
 '__and__',
 '__class__',
 '__cmp__',
 '__coerce__',
 '__delattr__',
 '__div__',
 '__divmod__',
 '__doc__',
 '__float__',
 '__floordiv__',
 '__format__',
 '__getattribute__',
 '__getnewargs__',
 '__hash__',
 '__hex__',
 '__index__',
 '__init__',
 '__int__',
 '__invert__',
 '__long__',
 '__lshift__',
 '__mod__',
 '__mul__',
 '__neg__',
 '__new__',
 '__nonzero__',
 '__oct__',
 '__or__',
 '__pos__',
 '__pow__',
 '__radd__',
 '__rand__',
 '__rdiv__',
 '__rdivmod__',
 '__reduce__',
 '__reduce_ex__',
 '__repr__',
 '__rfloordiv__',
 '__rlshift__',
 '__rmod__',
 '__rmul__',
 '__ror__',
 '__rpow__',
 '__rrshift__',
 '__rshift__',
 '__rsub__',
 '__rtruediv__',
 '__rxor__',
 '__setattr__',
 '__sizeof__',
 '__str__',
 '__sub__',
 '__subclasshook__',
 '__truediv__',
 '__trunc__',
 '__xor__',
 'bit_length',
 'conjugate',
 'denominator',
 'imag',
 'numerator',
 'real']

In [4]:

    

x=3+4j


    

In [5]:

    

x


    

    
Out[5]:





(3+4j)

In [6]:

    

x.real


    

    
Out[6]:





3.0

In [7]:

    

x.imag


    

    
Out[7]:





4.0

In [8]:

    

x=["Hello","Wasit", 1981]


    

In [9]:

    

x.append(21)


    

In [10]:

    

print x


    

    




['Hello', 'Wasit', 1981, 21]

In [11]:

    

x.pop()


    

    
Out[11]:





21

In [12]:

    

x


    

    
Out[12]:





['Hello', 'Wasit', 1981]

In [13]:

    

x[0]


    

    
Out[13]:





'Hello'

In [14]:

    

x[1]


    

    
Out[14]:





'Wasit'

In [15]:

    

x[2]


    

    
Out[15]:





1981

In [16]:

    

x[-1]


    

    
Out[16]:





1981

In [21]:

    

x=range(2,10,2)


    

In [22]:

    

x


    

    
Out[22]:





[2, 4, 6, 8]

In [23]:

    

x=range(20)


    

In [24]:

    

x


    

    
Out[24]:





[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19]

In [25]:

    

x[:]


    

    
Out[25]:





[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19]

In [26]:

    

x[:5]


    

    
Out[26]:





[0, 1, 2, 3, 4]

In [27]:

    

x[-5:]


    

    
Out[27]:





[15, 16, 17, 18, 19]

In [28]:

    

x[::-1]


    

    
Out[28]:





[19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0]

In [29]:

    

x[::-2]


    

    
Out[29]:





[19, 17, 15, 13, 11, 9, 7, 5, 3, 1]

In [34]:

    

x=(1,)


    

In [35]:

    

type(x)


    

    
Out[35]:





tuple

In [36]:

    

x=(5,7,8)


    

In [37]:

    

type(x)


    

    
Out[37]:





tuple

In [40]:

    

len(x)


    

    
Out[40]:





3

In [41]:

    

x={}


    

In [42]:

    

type(x)


    

    
Out[42]:





dict

In [45]:

    

x={'key':'value', 'key2':'vlue2'}


    

In [46]:

    

x['key']


    

    
Out[46]:





'value'

In [48]:

    

x['new key']='new value'


    

In [49]:

    

x


    

    
Out[49]:





{'key': 'value', 'key2': 'vlue2', 'new key': 'new value'}

In [47]:

    

for i in range(10):
    print i


    

    




0
1
2
3
4
5
6
7
8
9

In [52]:

    

d={}
for i in range(1,13):
    d[i]=i*12
print d


    

    




{1: 12, 2: 24, 3: 36, 4: 48, 5: 60, 6: 72, 7: 84, 8: 96, 9: 108, 10: 120, 11: 132, 12: 144}

In [55]:

    

%%timeit -n3
for i in range(100):
    pass


    

    




3 loops, best of 3: 2.8 µs per loop

In [3]:

    

%%timeit -n100
d={}
for i in range(1,13000):
    d[i]=i*12


    

    




100 loops, best of 3: 1.42 ms per loop

In [4]:

    

%%timeit -n100
x=[]
for i in range(10000):
    x.append(i*12)


    

    




100 loops, best of 3: 1.15 ms per loop

In [5]:

    

%%timeit -n100
x=[]
for i in xrange(10000):
    x.append(i*12)


    

    




100 loops, best of 3: 942 µs per loop

In [7]:

    

%%timeit -n100
x=[ i*12 for i in xrange(10000)]


    

    




100 loops, best of 3: 465 µs per loop

In [8]:

    

%%timeit -n100
d={}
for i in range(10000):
    d[i]=i*12


    

    




100 loops, best of 3: 1.17 ms per loop

In [22]:

    

%%timeit -n100
d={i:i*12 for i in xrange(10000)}


    

    




100 loops, best of 3: 845 µs per loop

In [23]:

    

import json


    

In [39]:

    

my_json='''
    {
        "customer":"Eienstein",
        "telephone":
            [
                "021234567",
                "021234568"
            ]
    }'''


    

In [40]:

    

print my_json


    

    




    {
        "customer":"Eienstein",
        "telephone":
            [
                "021234567",
                "021234568"
            ]
    }

In [44]:

    

contact_detail=json.loads(my_json)


    

In [46]:

    

contact_detail['telephone']


    

    
Out[46]:





[u'021234567', u'021234568']

In [42]:

    

my_obj={
            'customer':'Eienstein',
            'telephone':[
                    '021234567',
                    '021234568',
                ]
        }


    

In [43]:

    

json.dumps(my_obj)


    

    
Out[43]:





'{"customer": "Eienstein", "telephone": ["021234567", "021234568"]}'

In [ ]: