Python Dictionaries part1 - Day 7

Dictionaries store elements in key value pair,we can not append values to dictionary through any function or method ,we can assign using the key, functions like get,clear,del works with dictionary

  
#dictionary can not be accessed vy index,but through key value
films = {"muthu":"one of the movie in which rajini comes in double role",
         "basha":"Don of a don movie,a cult hit",
         "enthiran":"rajini's scifi movie",
         "murattu kalai":"movie taken in paganeri"}
print(films)
print(films["murattu kalai"])
#to add a new value to dictionay we dont have a method or function,but we can assign like the below one
films["kaala"]="more like a basha 2,april 27th - 2018 release"
print(films)
#if we use the same key and assign it will update instead of creating new element
films["kaala"]="probably thalaivars gonna be biggest hit"
print(films)
#similarly it will take the last set of key,value combination if there is any duplicate
films = {"muthu":"one of the movie in which rajini comes in double role",
         "basha":"Don of a don movie,a cult hit",
         "enthiran":"rajini's scifi movie",
         "murattu kalai":"movie taken in paganeri",
         "muthu":"one of the thalaivar & sarath babu combination movie"}
print (films["muthu"])

bike = {"make":"royal enfiled","model":"himalayan","cc":400,"review":"mostly avg or bad"}
print (bike["model"])
print (bike["cc"])
#delete a element or delete a entire dictonary or cleare the elements in the dictionary
del(bike["review"])
# del(bike)
# bike.clear()
print (bike)
#getting the unpresent key value will result in error,in that case we can use get function
# print (bike["color"])
print(bike.get("color"))
#while True is used to make the user keep qasking the questions,unless he types quit
# while True:
#     x = input("enter any thalaivar's film name: ")
#     if x == "quit":
#         break
#     description = films.get(x)
#     print(description)
#     #the below piece of code will return error if we enter any unknown key value
#     print(films[x])

#same code is rewritten to print the custom message if the value doesnot exists in dictory

while True:
    x = input("enter any thalaivar's film name: ")
    if x == "quit":
        break
    if x in films:
        description = films.get(x)
        print(description)
        print(films[x])
    else:
        print ("{} - doesnot exists in dictionaryy".format(x))
 

Python Handling Binary ,Hex and octal Numbers - Day 6(posted next day)

its better to have a basic idea about binary and hexadecimal nos,since the computers deal with them, here are the basics

  
# #decimal numbers in binary
# for i in range(10):
#     print("{0:>2} in binary is {0:>8b}".format(i))
#
# print(0b1011)
# #hex decimal
# for i in range(257):
#     print("{0:>2} in hex is {0:>02x}".format(i))
#
# #hex multipliation
# x = 0x20
# y = 0x0a
# print(x*y)
# #operations like or,and,xor,add,subtract refreshed

#converting decimal to binary through program
# print(10//2)
# print(10%3)
# powers = []
# for power in range(15,-1,-1):
#     powers.append(2**power)
#     # print(powers)
# print(powers)
# x = int(input("enter any number less than 65535 to convert to binary \n"))
# for i in powers:
#     # print(i)
#     print(x//i,end ='')
#     x%=i
#the above program will work ,but to avoid the trialing 0's can use the below code
powers = []
for power in range(15,-1,-1):
    powers.append(2**power)
    # print(powers)
print(powers)
printing = False
x = int(input("enter any number less than 65535 to convert to binary \n"))
for i in powers:
    # print(i)
    bit = x//i
    if bit!=0 or i ==1:
        printing =True
    if printing==True:
        print(bit,end ='')
    x%=i



 

Python Tuples - Day 5(posted next day)

Tuples are immutable objects,meaning they cannot be changed/altered ,they can only be assigned

  
# tuplevar1 = ("a","b","c")
# tuplevar2 = "a","b","c"
# print(tuplevar1)
# print(tuplevar2)
# print(("a","b","c"))
# print("a","b","c")
#
# #tuples are immutable objects,meaning they cannot be changed/altered ,
#they can only be assigned
# welcome = "hi","hello",2018
# print(welcome)
# print(welcome[0])
# #the below line of code will give an error ,since we are trying to alter the tuple
# # welcome[0]="hii"
# print(welcome)
#
# tupvar1 = "hi","ji"
# print(tupvar1)
# tupvar2 = welcome[1],tupvar1[0],2019
# print(tupvar2)
#
# #where as the list object can be altered like below
# listvar1 = ["hi","hello",2020]
# print(listvar1)
# listvar1[0]="Hii"
# print(listvar1)

#right side expression is evaluated first
# a , b = 1,2
# print(a,b)
# c=d=e=f=2
# print(c,d,e)
# a,b =b,a
# print(a,b)
#
# albumtuplevar1 = "muthu","rahman",2000
# print(albumtuplevar1)
# title,composer,year =albumtuplevar1
# print(title)
# print(composer)
# print(year)
#the below piece of code will throw an error like ValueError: not enough values 
#to unpack (expected 4, got 3)
# var1,var2,var3,var4=albumtuplevar1
# print(var1)
# print(var2)
# print(var3)
# print(var4)
#the below piece of code will throw an error likeValueError: 
#too many values to unpack (expected 2
# var1,var2=albumtuplevar1
# print(var1)
# print(var2)
#append work in tuple
# albumtuplevar1.append("Action")

#tuple inside tuple
# albumtuplevar1 = "muthu","rahman",2000,((1,"oruvan oruvan"),(2,"kuluvall"),(3,"vidukathaya"))
# print(albumtuplevar1)
# title,composer,year,tracks =albumtuplevar1
# print(title)
# print(composer)
# print(year)
# print(tracks)
# albumtuplevar2 = "muthu","rahman",2000,(1,"oruvan oruvan"),(2,"kuluvall"),(3,"vidukathaya")
# print(albumtuplevar2)
# title,composer,year,track1,track2,track3 =albumtuplevar2
# print(title)
# print(composer)
# print(year)
# print(track1)
# print(track2)
# print(track3)
#
# #printing the tracks w/o knowing the count
# title,composer,year,tracks =albumtuplevar1
# print(title)
# print(composer)
# print(year)
# for song in tracks:
#     no,songtitle = song
#     print("songno-{},songtitle-{}".format(no,songtitle))
    # print(song)

#mutable object inside a tuple can be altered,like the below example the list 
#inside the tuple can be changed
albumtuplevar3 = "muthu","rahman",2000,[(1,"oruvan oruvan"),(2,"kuluvall"),(3,"vidukathaya")]
print(albumtuplevar3)
print(albumtuplevar3[3])
albumtuplevar3[3].append((4,"thillana thillana"))
print(albumtuplevar3)
for song in albumtuplevar3[3]:
    no,songtitle = song
    print("songno-{},songtitle-{}".format(no,songtitle))
title,composer,year,tracks =albumtuplevar3
tracks.append((5,"kokku seva kokku"))
print(albumtuplevar3)
for song in tracks:
    no,songtitle = song
    print("songno-{},songtitle-{}".format(no,songtitle))
 

Python List part2 and range part1 - Day3(posted next day)

there is a concept called iterator,ie the things which are iterable like string,lists,range

  
#list inside a list
# menu = [];
# menu.append(["egg","milk","spam"])
# menu.append(["egg","milk","spam","bacon"])
# menu.append(["egg","milk"])
#
# for menuilist in menu:
#     if "spam" not in menuilist:
#         print(menuilist)
#         for menuitem in menuilist:
#             print(menuitem)
#few examples of iterables are String,List
#iterator,for loop already handles this function automatically
stringvar = "12345asd"
my_iterator = iter(stringvar)
print(my_iterator)
print(next(my_iterator))
print(next(my_iterator))
print(next(my_iterator))
print(next(my_iterator))
print(next(my_iterator))
print(next(my_iterator))
print(next(my_iterator))
print(next(my_iterator))
#will print an error if it exceeds the last iterable
# print(next(my_iterator))

daysinweekvar = ["Sun","Mon","Tue","Wed","Thurs","Fri","Sat",]
# for i in daysinweekvar:
#     print(i)
print(len(daysinweekvar))
daysinweekitervar = iter(daysinweekvar)
for i in range(0,len(daysinweekvar)):
    print(next(daysinweekitervar))

  

range is also one of iterator,it will be usually used in for loop ,check out the example

  
print (range(0,100))
print (range(100))
print (list(range(0,100)))
print (list(range(100)))
print (list(range(0,100,2)))

oddvar1 = range(1,100,2)
oddlistvar1 = list(range(1,100,2))
print(oddvar1)
print(oddlistvar1)
print(oddvar1.index(9))
print(oddlistvar1.index(9))

print(oddvar1[2])
print(oddlistvar1[2])

sevens = range(7,10000,7)
var2 = int(input("enter any no less than 10k"))
for var3 in sevens:
    if var2 == var3:
        print("{} is divisble by 7".format(var2))
  

Python List part1 - Day2

there are different types of sequence type in python,list is one of them

list is a constructor,if you assign the list to other list it holds the same memory

check how sorted and .sort functions work in the code block below

  
# ipaddress = input("enter a ip address \n")
# print (ipaddress.count("."))
#
# parrot_list = ["no more","a stiff"]
# print (parrot_list)
# parrot_list.append("green")
# print (parrot_list)
#
# for var in parrot_list:
#     print (var)
#
# evenno = [2,4,4,6,8]
# odd = [1,3,5,7]
#
# print (evenno + odd)
# print (sorted(evenno + odd))
# numbers = evenno + odd
# #if u try the below code it wont return the sorted values,
# #because it will update the list and returns none as result
# #you can use sorted function if it has to be sorted at the time,but not
# #the original list itself
# # print (numbers.sort())
# numbers.sort()
# print (numbers)
# unsortednos = evenno + odd
# sortednos = (sorted(evenno + odd))
#
# #comparison wont be equal even if we have the same list items but in different order
# if sortednos == unsortednos:
#     print ("equal")
# else:
#     print ("not equal")
#
#
# if sortednos == sorted(unsortednos):
#     print ("equal")
# else:
#     print ("not equal")

# list_1= []
# list_2 = list()
# print ("list1 : {}".format(list_1))
# print ("list2 : {}".format(list_2))
#
# if list_1 == list_2:
#     print ("equal")
# else:
#     print ("not equal")
#
# print (list("welcome to the world of lists"))

#list is a constructor
# evenno = [2,4,6]
# anotherevenno = evenno
# print(anotherevenno is evenno)
# anotherevenno.sort(reverse=True)
# #below will print the same ,although we changed the different list,because
# #they are same
# print(evenno)
#
#
# evenno1= [2,4,6]
# anotherevenno1 = list(evenno1)
# print(anotherevenno1 is evenno1)
# print(anotherevenno1 == evenno1)
# anotherevenno.sort(reverse=True)
# #below will print different ,since they are 2 different list
# print(evenno1)

even1= [2,4,6,8,10]
odd1= [1,3,5,7,9]

allnos = [even1,odd1]
print(allnos)

for numberset in allnos:
    print(numberset)

    for val in numberset:
        print(val)
  

Started Python and Continued - Day1

Subscribed to Udemy Python Course

Installed Intellij

Coded using For loop,While Loop

Number Game,Direction Game

  
# for i in [10]:
#     print ("now the value of i is {}".format(i))

# i = 0
# while i <10:
#     print ("now the value of i is {}".format(i))
#     i = i+1
#
# #good example for while loop is below
# exitoptions = ["east","northeast"]
# youroption = ""
# while youroption not in exitoptions:
#     youroption = input("please enter your exit direction \n")
#     if youroption =="quit":
#         print("game over")
#         break
# else:
#     print("aren't you glad that you are out from there")

# Guess number game using if

# import random
# highest = 10
# random = random.randint(1,highest)
# # print(random)
# answer = 1
# answer = int(input ("Guess any number between 1 and {} \n".format(highest)))
# if (answer==random):
#     print("you guessed it corectly  \n")
# elif (answer>random):
#     answer = int(input("guess lesser no \n"))
#     if (answer==random):
#         print("you guessed it corectly  \n")
# elif (answer<random):
#     answer = int(input("guess higher no \n"))
#     if (answer==random):
#         print("you guessed it corectly \n")

# Guess number game using whileloop

import random
# highest = 10
# random = random.randint(1,highest)
# print(random)
# guessallowed = 5
# guesstime = 1
# guessedno = int(input("guess a no between 1 and {}\n".format(highest)))
# while guesstime <guessallowed and random!=guessedno:
#     guessedno = int(input("guess one more time\n"))
#     guesstime = guesstime + 1
# if (random == guessedno):
#     print("you guessed it at {}- guess".format(guesstime))
# else:
#     print("sorry")
  

Power Of Consistency

IF YOU WANT TO BE TAKEN SERIOUSLY BE CONSISTENT

No one is born genius,some might have high IQ.

But rest go to the top just by sheer practice.

Daily Practice

1 Ted Talk/Blog [related to data-science,machine learning deep learning]

1 Hour Python Practice

1/2 hour of new sql concept

1/2 hour of math a day

Atleast 1 Fruit a day

20 Pushups A day

1 Cycle Ride A day

1 Blog A day

10 Mins of calmness a day

10 mins of goal remembrance a day