diff --git a/Parmanand saraswat/Data Science/assignment1.docx b/Parmanand saraswat/Data Science/assignment1.docx
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diff --git a/Parmanand saraswat/Late night task.txt b/Parmanand saraswat/Late night task.txt
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+Python Late-Night Task
+
+1. Make a script to send “Hi” 5 times to a friend.
+Sol.
+import webbrowser as web
+import pyautogui as pg
+import time
+count = 0
+number=int(input("Enter the number with country code as prefix: "))
+while count<5:
+	web.open('https://web.whatsapp.com/send?phone='+str(number)+'&text=Hi')
+	time.sleep(30)
+	pg.press('enter')
+	time.sleep(3)
+	pg.hotkey('ctrl','w')
+	count += 1
+
+2. Make a script to send same message to 6 persons
+Sol.
+import webbrowser as web
+import pyautogui as pg
+import time
+numbers = []
+count=0
+while count<6:
+	num=input("Enter "+str(count)+" numbers to send message to: ")
+	numbers.append(num)
+	count+=1
+count=1
+url1 = 'https://web.whatsapp.com/send?phone='
+url2 = ',&text=Hi'
+for i in numbers:
+	web.open(url1+i+url2+' You are '+str(count)+' person')
+	time.sleep(15)
+	count+=1
+	pg.press('enter')
+	time.sleep(3)
+	pg.hotkey('ctrl','w')
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diff --git a/Parmanand saraswat/Linux/assignment1.txt b/Parmanand saraswat/Linux/assignment1.txt
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+1) When we create a user, some hidden files are generated in the directory of the same user at that time. How is it done ?
+
+Ans.  It is done because these files are in the folder /etc/skel and whichever files we place in this folder those files will be 
+	made available in the home directory of all the users which we create afterwards.
+	For reference following are some commands to create a file in /etc/skel and creating and listing files in /home/user
+	files 
+	-> cd /etc/root
+	-> touch TestFile
+	-> useradd RedhatUser
+	-> ls /home/RedhatUser
+	Now you'll find the TestFile document in this folder which is the proof that whichever files we put in the folder
+	/etc/skel will be available to all the users created after it.
+
+
+2) Make sub directories inside a parent directory by using single mkdir command.
+ 
+Ans.  mkdir  -p  A/B/C (-p for parent directoy option).
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diff --git a/Parmanand saraswat/Linux/assignment2.txt b/Parmanand saraswat/Linux/assignment2.txt
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+Ans  1 	Go to vim /etc/bashrc
+	Go to line no 73 in RHEL 7 
+		OR
+	You can go to /etc/profile and go to line no 62
+	Change the umask value whichever you want 
+	Save and exit file with :wq.
+ 
+Ans  2        Add an entry for the user in /etc/passwd file.
+                  Add an entry for the group in /etc/group file.
+	Create the home directory for the added user.
+	Set the new user password using the passwd command.
+
+Ans  3	No, we cannot change the umask value to 0888 because if we use it then by default permission for 
+	file and directory go to negative or less than zero that is not possible.
+
+Ans  4 	# useradd   -u   1345   username.
+	To check unique id of that user :
+	   	Go to  vim /etc/passwd
+
+Ans  5 	#chgrp     groupname      file/directory
+        5(a)   To check the groupname of files inside folder
+     	#ll     file/folder
+        5(b)   #chown    -R      :groupname      ParentDirectory (-R for Recursively)
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diff --git a/Parmanand saraswat/Linux/assignment3.txt b/Parmanand saraswat/Linux/assignment3.txt
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+Ans 1    #tar -cvzf ContentFile.tar.bz2 content.txt.
+
+Ans 2    #bzip2 -d filename.bz2 (-d specifies Decompress).
+
+Ans 3    #cat  <  file.
+
+Ans 4    #useradd    -s      /bin/sh       username.
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diff --git a/Parmanand saraswat/python/Assignment1.txt b/Parmanand saraswat/python/Assignment1.txt
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+Q1. What is Jpython and Cpython?
+ANS:- Cpython is standard implementation of Python which is written in C.We call it Cpython to distinguish Python implementation
+       of the language engine from Python programming language itself.It is ends up producing bytecode(machine instruction set) 
+       which is Python specific and then executes it.The reason to convert Python code to a bytecode because it's easier to
+       imolement an interpreter if it is looks like machine instructions.
+      Jpython is the other implementation of Python which is implemented for Java. Jpython is used to converts Python code 
+       in Java bytecode so it can be implemented in JVM. JVM is used to converts Java code in machine language and executes it.
+
+Q2. What is difference between Python2 and Python3?
+ANS:-              PYTHON 2                                                   PYTHON 3
+	1. In Python2, print statement is used to print        1. In python3, print function is used to print any 
+	   data.    						   data.
+	   Ex:- print "hello"					   Ex:- print("hello")
+	2. In this version of Python xrange() function	       2. range() function is used for iterations.
+	   is uses for iterations.    
+	3. Default storing of string is ASCII code. To	       3. Default storing of string is unicode.
+	   store Unicode string value, you require to 
+	   define them with "u".
+	4. Exceptions should be enclosed in notations.         4. Exceptions should be enclosed in parenthesis.
+	5. Value of global value can be changed while 	       5. Value of variable snever changed. 
+	   using it inside for loop.   
+	6. Whenever two integer are divided, you get a	       6. Whenever two integer are divided, you get a float value.
+	    int value.   
+
+Q3. What is difference between unicode and ASCII code?
+ANS:-ASCII Extended solves the problem for languages that are based on the Latin alphabet.
+     ASCII defines 128 characters, which map to the numbers 0–127.
+     Unicode sis used to solve the problem for all type of languages.Unicode is superst of ASCII code.
+      And the numbers 0–127 have the same meaning in ASCII as they have in Unicode. For example, the number
+      65 means "Latin capital 'A'".
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diff --git a/Parmanand saraswat/python/Assignment2.txt b/Parmanand saraswat/python/Assignment2.txt
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+Q1. What should be the output? ( 3 + 4 ** 6 - 9 * 10 / 2 )
+ANS:- we know the precence order for arithmetic operators (*,/,+,-)
+   output = 4054.0
+
+Q2. Let say I have, some string "hello this side regex"
+    Find out the count of the total vowels
+? vowels - ['a','e','i','o','u']
+ANS:-
+	string="hello this side regex"
+        vowels = ['a','e','i','o','u']
+	count=0
+	l=list()
+	for i in string.replace(" ",""):
+    		l.append(i)
+	for k in l:
+    		if k in vowels:
+        	count+=1
+	print(count)
+        
+        OUTPUT:- 7
+
+Q3. Find out the area of triangle
+    - 1/2 * b * h (formula of area)
+    - You have to take value from user about the base, & the height
+ANS:- b,h=input("enter value of base and height").split()
+      print(1/2*int(b)*int(h))
+
+      OUTPUT:-enter value of length and height5 6
+	      15.0
+
+Q4. Print the calendar on the terminal. If you give the year.
+    - Allow the user to input the year.
+    - Then should that calendar of that year
+ANS:- import calendar
+      year=int(input("enter a year"))
+      for i in range(1,13):
+      	print(calendar.month(year,i))
+ OUTPUT:- January 2021
+Mo Tu We Th Fr Sa Su
+             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 30 31
+
+   February 2021
+Mo Tu We Th Fr Sa Su
+ 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
+
+     March 2021
+Mo Tu We Th Fr Sa Su
+ 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 30 31
+
+     April 2021
+Mo Tu We Th Fr Sa Su
+          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 30
+
+      May 2021
+Mo Tu We Th Fr Sa Su
+                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 30
+31
+
+     June 2021
+Mo Tu We Th Fr Sa Su
+    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 30
+
+     July 2021
+Mo Tu We Th Fr Sa Su
+          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 30 31
+
+    August 2021
+Mo Tu We Th Fr Sa Su
+                   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
+30 31
+
+   September 2021
+Mo Tu We Th Fr Sa Su
+       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 30
+
+    October 2021
+Mo Tu We Th Fr Sa Su
+             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 30 31
+
+   November 2021
+Mo Tu We Th Fr Sa Su
+ 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 30
+
+   December 2021
+Mo Tu We Th Fr Sa Su
+       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
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diff --git a/Parmanand saraswat/python/Assignment3.txt b/Parmanand saraswat/python/Assignment3.txt
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+Q1. Find the Armstrong Number between the two numbers which are input by user
+    ? Armstrong number : 153 -> 1*1*1 + 5*5*5 + 3*3*3
+ANS:-m=int(input("enter number1 :"))
+     n=int(input("enter number2 :"))
+     for num in range(m,n+1):
+     	sum=0
+        temp=num
+        while temp>0:
+        	rem=temp%10
+        	sum+=rem**3
+        	temp=temp/10
+    	 if num==sum:
+         	print(num)
+         else:
+         	continue
+
+	OUTPUT:-enter number1 :151
+      		enter number2 :154
+		153
+
+Q2. Let’s say you have a string “hello this world @2020!!! ”
+    ? Remove the punctuation like [“@!#$%&*()”] from the string
+      ¦ Final output should be without the punctuation
+        ? “hello this world 2020”
+ANS:- string=input("enter your string :")
+      for i in string:
+      	if i.isalnum() or i==' ':
+        	print(i,end="")
+	
+	OUTPUT:-enter your string :hello this world @2020!!!
+                hello this world 2020
+
+Q3. You have a list with words - [“Apple”, “banana”, “cat”, “REGEX”,”apple”]
+    ? Sort words in Alphabetical order
+	¦ If you get output, like [Apple, apple, banana]
+	    ? How has it happened?
+ANS:- 
+         l=["Apple", "banana", "cat", "REGEX","apple"]
+	 print(sorted(l)) #we also can use here l.sort() and then print(l)
+	 
+	 OUTPUT:- ['Apple', 'REGEX', 'apple', 'banana', 'cat']
+
+  REASON:-- Python put uppercase items first because the ASCII value(Python2) or unicode(Python3) value for 
+	     uppercase items is less than lowercase items. And hence if we sort them in increasing order, the
+	     upper case will come before the lower case.
+        
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diff --git a/Parmanand saraswat/python/Assignment4.txt b/Parmanand saraswat/python/Assignment4.txt
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+# Ques1 : Write a Program to print new list which contains all the first Characters of strings present in a list
+        # LIST_STATES = ["GOA","RAJASTHAN","KARNATAKA","GUJRAT","MANIPUR","MADHYA PRADESH"]
+# Ans : 
+List_states = ["GOA","RAJASTHAN","KARNATAKA","GUJRAT","MANIPUR","MADHYA PRADESH"]
+New_list = []
+for i in List_states:
+	first_char = i[0]
+	New_list.append(first_char)
+print(New_list)
+
+
+
+# Ques2 : Write a program to replace each string with an integer value in a given list of strings.
+        # The replacement integer value should be a sum of AScci values of each character of type corresponding string.
+        # LIST: ['GAnga', 'Tapti', 'Kaveri', 'Yamuna', 'Narmada' ]
+# Ans :
+given_list = ['GAnga', 'Tapti', 'Kaveri', 'Yamuna', 'Narmada']
+add = 0
+replaced_list = []
+for i in given_list:
+	for j in i:
+		add = add + ord(j)
+	replaced_list.append(add)
+print(replaced_list)
+
+
+
+# Ques3 : You have to run your Program at 9:00am. Date: 14th April 2020.
+        ### HINT:
+        # You have to use datetime Module or time module.
+        # You have to convert your output in #LIST_FORMAT
+        # [ '2020-04-13' , '17:11:01.952975' ]
+        # you can use this with the help of IF/Else statement
+# Ans :
+from datetime import datetime
+from threading import Timer
+
+x = datetime.today()
+
+date = datetime.strptime('2020-04-14',"%Y-%m-%d")
+y = date.replace(hour=9, minute=0, second=0, microsecond=0)
+
+delta_t = y - x
+
+secs = delta_t.seconds + 1
+
+def hello_world():
+    print("hello world")
+    
+t = Timer(secs, hello_world)
+t.start()
+
+
+
+# Ques4 : GIve a tuple:
+        # tuple = ('a','l','g','o','r','i','t','h','m')
+        # 1. Using the concept of slicing, print the whole tuple
+        # 2. delete the element at the 3rd Index, print the tuple.
+# Ans : 
+
+    # 1.
+given_tuple = ('a','l','g','o','r','i','t','h','m')
+print(given_tuple[::])
+
+    # 2. -> We can't delete the 3rd indexed element from the tuple as TUPLES ARE IMMUTABLE (i.e, we can't change it's contents).
+
+
+
+# Ques5: Take a list REGex=[1,2,3,4,5,6,7,8,9,0,77,44,15,33,65,89,12]
+        # - print only those numbers greator then 20
+        # - then print those numbers those are less then 10 or equal to 10
+        # - store these above two list in two different list.
+# Ans:
+REGex=[1,2,3,4,5,6,7,8,9,0,77,44,15,33,65,89,12]
+list1 = []
+list2 = []
+
+# Printing the elements > 20
+print('Elements > 20 :')
+for i in REGex:
+    if(i > 20):
+        print(i)
+        
+        list1.append(i)     # adding the element > 20 in list1
+
+# Printing the elements <= 10
+print('Elements <= 10 :')
+for i in REGex:
+    if(i <= 10):
+        print(i)
+
+        list2.append(i)     # adding the elemant <= 10 in list2
+
+print('list of elements > 20 :',list1,'\nlist of elements <= 10 :',list2)
+
+
+
+# Ques6 : Execute standard LINUX Commands using Python Programming.
+# Ans: We can execute any LINUX Command using python by using the following -
+    
+import os 
+
+os.system('command to execute')
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diff --git a/Parmanand saraswat/python/Assignment5.txt b/Parmanand saraswat/python/Assignment5.txt
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+1.Write a Python program to read a file line by line and store it into a list.
+Sol. 
+def file_read(fname):
+        with open(fname) as f: 
+content_list = f.readlines()
+                print(content_list)
+file_read('test.txt')
+
+
+
+2. Write a Python program to read a file line by line store it into an array.
+Sol. 
+def file_read(fname):
+content_array = []
+        with open(fname) as f:   
+                for line in f:
+content_array.append(line)
+                print(content_array)
+        print(type(content_array))
+file_read('test.txt'
+
+3. Write a Python program to read a random line from a file.
+Sol.
+import random
+def random_line(fname):
+    lines = open(fname).read().splitlines()
+    return random.choice(lines)
+print(random_line('test.txt'))
+
+4. Write a Python program to combine each line from first file with thecorresponding line in second file
+Sol.
+print('\n')
+with open('test.txt') as fh1, open('test2.txt') as fh2:
+    for line1, line2 in zip(fh1, fh2):
+        print(line1+line2)
+
+
+
+5. Write a Python program to generate 26 text files named A.txt, B.txt, andso on up to Z.txt. 
+Sol.
+import string
+for letter in string.ascii_uppercase:
+   with open (letter + ".txt", "w") as f:
+f.writelines(letter)
+
+
+6. Write a Python program to create a file where all letters of Englishalphabet are listed by specified number of letters on each line.
+Sol.
+import string
+def letters_file_line(n):
+   with open("words1.txt", "w") as f:
+       alphabet = string.ascii_uppercase
+       letters = [alphabet[i:i + n] + "\n" for i in range(0, len(alphabet), n)]
+f.writelines(letters)
+num=int(input("Enter the number: "))
+letters_file_line(num)
+
+
+
+7. Scrap data from Worldometer example: INDIA Data and run it on live mode Print additionally total number of CORONAVIRUS Cases, Deaths and Recovered.
+Sol.
+import urllib.request
+from urllib.request import Request
+from bs4 import BeautifulSoup
+
+data=[]
+total_data=[]
+url="https://www.worldometers.info/coronavirus/"
+hdr = {'User-Agent': 'Chrome/80.0.3987.163'}
+req = Request(url,headers=hdr)
+
+r=urllib.request.urlopen(req).read()
+soup=BeautifulSoup(r,'lxml')
+
+divs=soup.findAll("div", {"id": "maincounter-wrap"})
+for tag in divs:
+spanTags = tag.find_all("span")
+    for tag in spanTags:
+total_data.append(tag.text)
+
+print("\n{:>16}TOTAL WORLD DATA\nCORONAVIRUS Cases  Total Deaths  Total Recovered".format(" "))
+print("   {}{:>15}{:>16}".format(total_data[0],total_data[1],total_data[2]))
+
+print("\nScrapingWorldometer for Data of Covid19 (India)")
+
+table=soup.find('table')
+table_rows=table.find_all('tr')
+
+for tr in table_rows:
+	td=tr.find_all('td')
+	row=[i.text for i in td]
+	data.append(row)
+
+india=data[24]
+print("\n{:>16}INDIA COVID19 DATA\nCountry  Total Cases  New Cases  Total Deaths  New Deaths  Total Recovered  Active Cases  Serious,Critical  Tot Cases/1M pop  Deaths/1M pop  Total Tests  Tests/1M pop".format(" "))
+print("{} {:>11} {:>10} {:>12} {:>20} {:>8} {:>13} {} {:>28} {:>18} {:>15} {:>10}".format(india[0],india[1],india[2],india[3],india[4],india[5],india[6],india[7],india[8],india[9],india[10],india[11],india[12]))
+