data structures using python code example

Example 1: data structures and algorithms in python

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Example 2: stack data structure python

#using doubly linked list
from collections import deque
myStack = deque()

myStack.append('a')
myStack.append('b')
myStack.append('c')

myStack
deque(['a', 'b', 'c'])

myStack.pop()
'c'
myStack.pop()
'b'
myStack.pop()
'a'

myStack.pop()

#Traceback (most recent call last):
 #File "<console>", line 1, in <module>
##IndexError: pop from an empty deque

Example 3: python data types

#use syntax: variable = value
#string
string = 'ASCII text'
#integer
integer = 1234567890
#float
floatnum = 123.456
#list(called arrays in other languages)
numlist = [1,2,3,4,5]
#dictionary(called objects in other languages)
dictionary = {'key','value'}

Example 4: python data structures

list = [same as array with different features] 
array = [23, 'arrayItem', True, ['Hi', 34, False] ]
dictionary = {'key' : 'value'}
object = class testObj:
tuple = ( "a", "b", "c", "d" ); #same as list but non-changable

Example 5: python data structures

#string
string = 'Hi my name is Dr.Hippo'
#integer(whole number)
integer = 12345
#floating point number
fl = 123.456
#list
li = [1,2,3,,'string',None]
#boolean
t = True
f = False
#none(equivalent to null or undefined in other languages)
n = None
#dictionary
dictionary = {'key':'value'}