/ Python And R Data science skills: 12 ds python list in telugu vlr training

Sunday 4 February 2018

12 ds python list in telugu vlr training

12 Lists in python
In [1]:
#https://www.tutorialspoint.com/python/python_lists.htm List
In [2]:
a=[22,44,55]
In [3]:
a
Out[3]:
[22, 44, 55]
In [5]:
a[0]
Out[5]:
22
In [6]:
type(a)
Out[6]:
list
In [7]:
list1=[1,"ramesh",True,9059868766]
In [8]:
list1
Out[8]:
[1, 'ramesh', True, 9059868766]
In [9]:
list2=["hyd",list1]
In [10]:
list2
Out[10]:
['hyd', [1, 'ramesh', True, 9059868766]]
In [11]:
a=[2,3,4,[3,4,"r"],"t"]
In [12]:
a
Out[12]:
[2, 3, 4, [3, 4, 'r'], 't']
In [14]:
for i in list1:
    print (i)
1
ramesh
True
9059868766
In [16]:
for i in list2:
    print (i)
hyd
[1, 'ramesh', True, 9059868766]
In [17]:
list1[2]
Out[17]:
True
In [18]:
list1[1:2]
Out[18]:
['ramesh']
In [19]:
list
Out[19]:
list
In [20]:
list
Out[20]:
list
In [21]:
list1
Out[21]:
[1, 'ramesh', True, 9059868766]
In [22]:
list1[0:2]
Out[22]:
[1, 'ramesh']
In [23]:
list1[2:4]
Out[23]:
[True, 9059868766]
In [24]:
list1
Out[24]:
[1, 'ramesh', True, 9059868766]
In [25]:
list1[1]="suresh"
In [26]:
list1
Out[26]:
[1, 'suresh', True, 9059868766]
In [27]:
list3=list1
In [28]:
list3
Out[28]:
[1, 'suresh', True, 9059868766]
In [31]:
del list3[5]
---------------------------------------------------------------------------
IndexError                                Traceback (most recent call last)
<ipython-input-31-e74a5e61fdbc> in <module>()
----> 1 del list3[5]

IndexError: list assignment index out of range
In [30]:
list3
Out[30]:
[1, 'suresh', True]
In [32]:
len(list1)
Out[32]:
3
In [33]:
list1
Out[33]:
[1, 'suresh', True]
In [34]:
list4=list1+a
In [35]:
list4
Out[35]:
[1, 'suresh', True, 2, 3, 4, [3, 4, 'r'], 't']
In [36]:
list5=["ramesh"*5]
In [37]:
list5
Out[37]:
['rameshrameshrameshrameshramesh']
In [38]:
2 in list4
Out[38]:
True
In [39]:
5 in list4
Out[39]:
False
In [40]:
list4
Out[40]:
[1, 'suresh', True, 2, 3, 4, [3, 4, 'r'], 't']
In [41]:
list4[-1]
Out[41]:
't'
In [45]:
list4[1:-4]
Out[45]:
['suresh', True, 2]
In [46]:
li1=range(10)
In [47]:
li1
Out[47]:
range(0, 10)
In [49]:
print(list(li1))
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
In [53]:
a=range(1,30)
In [54]:
a
Out[54]:
range(1, 30)
In [55]:
list(a)
Out[55]:
[1,
 2,
 3,
 4,
 5,
 6,
 7,
 8,
 9,
 10,
 11,
 12,
 13,
 14,
 15,
 16,
 17,
 18,
 19,
 20,
 21,
 22,
 23,
 24,
 25,
 26,
 27,
 28,
 29]
In [56]:
a=range(0,100,2)
In [57]:
list(a)
Out[57]:
[0,
 2,
 4,
 6,
 8,
 10,
 12,
 14,
 16,
 18,
 20,
 22,
 24,
 26,
 28,
 30,
 32,
 34,
 36,
 38,
 40,
 42,
 44,
 46,
 48,
 50,
 52,
 54,
 56,
 58,
 60,
 62,
 64,
 66,
 68,
 70,
 72,
 74,
 76,
 78,
 80,
 82,
 84,
 86,
 88,
 90,
 92,
 94,
 96,
 98]
In [58]:
len(a)
Out[58]:
50
In [59]:
a[-1]
Out[59]:
98
In [67]:
a[-1]
Out[67]:
98
In [68]:
a[:-1]
Out[68]:
range(0, 98, 2)
In [69]:
list(a[:-1])
Out[69]:
[0,
 2,
 4,
 6,
 8,
 10,
 12,
 14,
 16,
 18,
 20,
 22,
 24,
 26,
 28,
 30,
 32,
 34,
 36,
 38,
 40,
 42,
 44,
 46,
 48,
 50,
 52,
 54,
 56,
 58,
 60,
 62,
 64,
 66,
 68,
 70,
 72,
 74,
 76,
 78,
 80,
 82,
 84,
 86,
 88,
 90,
 92,
 94,
 96]

No comments:

Post a Comment