PYTHON

tuple in python

"""tuples in python:
the lists are mutable, Python needs to allocate an extra memory block 
in case there is a need to extend the size of the list object after it is created. 
In contrary, as tuples are immutable and fixed size, Python allocates 
just the minimum memory block required for the data.
As a result, tuples are more memory efficient than the lists."""
import sys, platform, time
a_list = list()
a_tuple = tuple()
a_list = [1,2,3,4,5]
a_tuple = (1,2,3,4,5)
print(sys.getsizeof(a_list))
print(sys.getsizeof(a_tuple))
start_time = time.time()
b_list = list(range(10000000))
end_time = time.time()
print("Instantiation time for LIST:", end_time - start_time)
start_time = time.time()
b_tuple = tuple(range(10000000))
end_time = time.time()
print("Instantiation time for TUPLE:", end_time - start_time)
start_time = time.time()
for item in b_list:
  aa = b_list[20000]
end_time = time.time()
print("Lookup time for LIST: ", end_time - start_time)
start_time = time.time()
for item in b_tuple:
  aa = b_tuple[20000]
end_time = time.time()
print("Lookup time for TUPLE: ", end_time - start_time)

"""As you can see from the output of the above code snippet, 
the memory required for the identical list and tuple objects is different.
When it comes to the time efficiency, again tuples have a slight advantage 
over the lists especially when lookup to a value is considered."""

"""When to use Tuples over Lists:
Well, obviously this depends on your needs.
There may be some occasions you specifically do not what data to be changed. 
If you have data which is not meant to be changed in the first place, 
you should choose tuple data type over lists.
But if you know that the data will grow and shrink during the runtime of the application, 
you need to go with the list data type."""

python tuple

# tuples are immutable

# initialize tuple
scores = (10, 20, 30)

# check if 10 is in scores tutple
print(10 in scores)

# print all scores in tuple
for score in scores:
    print(scores)

# print length of tuple
print(len(scores))

# print scores reversed
print(tuple(reversed(scores)))

# print scores reversed
print(scores[::-1])

# print first score by index
print(scores[0])

# print first two scores
print(scores[0:2])

# print tuple
thistuple = ("apple",)
print(type(thistuple))

#NOT a tuple
thistuple = ("apple")
print(type(thistuple))

how to declare tuple in python

tuple1 = ("Russia","America","India","Israel","china")
print(tuple1)

pyhton tuple

#It's like a list, but unchangeable
tup = ("var1","var2","var3")
tup = (1,2,3)
#Error

tuple in python

#a tuple is basically the same thing as a
#list, except that it can not be modified.
tup = ('a','b','c')

python3 tuple

from collections import namedtuple

Point = namedtuple('Point', 'x y')
p = Point(1, y=2)

p[0]
# 1
p.x
# 1
getattr(p, 'y')
# 2
p._fields  # Or: Point._fields
# ('x', 'y')

tuples in python

#tuple unpacking
myTuple = ("Tim","9","Smith")
#tuple unpacking allows us to store each tuple element in a variable
#syntax - vars = tuple
"""NOTE: no of vars must equal no of elements in tuple"""
name,age,sirname = myTuple
print(name)
print(age)
print(sirname)
#extra
#this alows us to easily switch values of variables
name,sirname = sirname,name
print(name)
print(sirname)

tuple python

# Change Value In Tuple :-

friends = ("Mido", "Lucifer", "Abdelrhman")

# Example => Wanna Change ( Abdelrhman ) To ( Aiiob );
# First We Need Transformation From Tuple To List ,
# We Need To Create Variable With Any Name 
# After This We Use list() Function

oneName = list(friends)

# After This We Need Change The Value ,

oneName[-1] = "Aiiob"

# After This We Need Transformation From List To Tuple ,
# We Use tuple() Function

friends = tuple(oneName)

# And We Done (:

tuple methods in python

# Creating a tuple using ()
t = (1, 2, 4, 5, 4, 1, 2,1 ,1)

print(t.count(1))
print(t.index(5))

python tuple example

# Creating a Tuple with
# the use of Strings
Tuple = ('Geeks', 'For')
print("
Tuple with the use of String: ")
print(Tuple)
      
# Creating a Tuple with
# the use of list
list1 = [1, 2, 4, 5, 6]
print("
Tuple using List: ")
Tuple = tuple(list1)
  
# Accessing element using indexing
print("First element of tuple")
print(Tuple[0])
  
# Accessing element from last
# negative indexing
print("
Last element of tuple")
print(Tuple[-1])
  
print("
Third last element of tuple")
print(Tuple[-3])

py tuple

# Different types of tuples

# Empty tuple
my_tuple = ()
print(my_tuple) # ()

# Tuple having integers
my_tuple = (1, 2, 3)
print(my_tuple) # (1, 2, 3)

# tuple with mixed datatypes
my_tuple = (1, "Hello", 3.4)
print(my_tuple) # (1, 'Hello', 3.4)

# nested tuple
my_tuple = ("mouse", [8, 4, 6], (1, 2, 3))
print(my_tuple) # ('mouse', [8, 4, 6], (1, 2, 3))

Python Tuple Operations

# Membership test in tuple
my_tuple = ('a', 'p', 'p', 'l', 'e',)

# In operation
print('a' in my_tuple)
print('b' in my_tuple)

# Not in operation
print('g' not in my_tuple)

tuplein python

a=(1,2,3,4)
print(a[-3])

tuple in python

name_of_students = ("Jim" , "yeasin" , "Arafat")
print(name_of_students.index('Arafat'))

tuple python

tuple = ("Facebook", "Instagram", "TikTok", "Twitter")

tuples in python

  strs = ['ccc', 'aaaa', 'd', 'bb']  print sorted(strs, key=len)  ## ['d', 'bb', 'ccc', 'aaaa']
 #the list will be sorted by the length of each argument

tuple python

tupel python

tuple in python

#Tuple is immutable(which can't change)
fruits = ("Apple", "orange", "pears")
# You can check place, character in it but can't change

Python Tuples

# Creating an empty Tuple
Tuple1 = ()
print("Initial empty Tuple: ")
print(Tuple1)
 
# Creating a Tuple
# with the use of string
Tuple1 = ('Geeks', 'For')
print("
Tuple with the use of String: ")
print(Tuple1)
 
# Creating a Tuple with
# the use of list
list1 = [1, 2, 4, 5, 6]
print("
Tuple using List: ")
print(tuple(list1))
 
# Creating a Tuple
# with the use of built-in function
Tuple1 = tuple('Geeks')
print("
Tuple with the use of function: ")
print(Tuple1)

tuple methods in python

#Python has two built-in methods that you can use on tuples.

#Method	Description

count()	
Returns the number of times a specified value occurs in a tuple

index()	
Searches the tuple for a specified value and returns the position 
of where it was found

python tuples

#!/usr/bin/python

tup1 = ('physics', 'chemistry', 1997, 2000);
tup2 = (1, 2, 3, 4, 5, 6, 7 );
print "tup1[0]: ", tup1[0];
print "tup2[1:5]: ", tup2[1:5];