Assignments

Riya Khanna/Linux(4).txt

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+1.Meaning of d in yum install command.
+Ans. The d means “Download only” which will download to /var/cache/yum/arch/prod/repo/packages/, but won’t install them. 
+
+2.Difference between rpm -e and yum remove.
+Ans. YUM remove can remove rpm packages, but it will only remove the rpm package requested and not anything that package depends on. 
+This is because if you follow the dependencies on removal, you'll end up removing something like libc, or the kernel, which you'd probably rather keep.
+While rpm -e command, reviews the RPM database to find every file listed as being part of the package, and if they do not belong to another package, deletes them. 
+It also checks the RPM database to make sure that no other packages depend on the package being erased and it executes a pre/post-uninstall script (if one exists).

Riya Khanna/Pyhthon(6).txt

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+Q1.Python Program to read a file line by line and store it in a list.
+Ans1. 
+f1=open("abc.txt",'r')
+Lines = f1.readlines()
+print(Lines)
+
+Q2.Python Program to read a file line by line and store it into an array.
+Ans2.
+def file_read(fname):
+        arr = []
+        with open(fname) as f:   
+                for i in f:
+                        arr.append(i)
+                print(arr)
+        print(type(arr))
+
+file_read('test.txt')
+
+Q3.Python program to read a random line from a file.
+Ans3.
+import random
+f=open("abc.txt",'r')
+lines = f.readlines()
+print(random.choice(lines))
+
+Q4.Write a python program to combine each line from the first file with the corresponding line in the second file.
+Ans4.
+f=open("abc.txt",'r')
+f1=open("xyz.txt",'r')
+for i,j in zip(f,f1):
+    print(i+j)
+
+Q5. Write a Python program to generate 26 text files named A.txt, B.txt and so on.
+Ans5.
+import string
+for i in string.ascii_uppercase:
+   with open(i + ".txt", "w") as f:
+       f.writelines(i) 
+Q6. Write a python program to create a file where all letters of English alphabets are listed by specified numbers of letters in each line.
+Ans6.
+import string
+
+def letters_file_line(n):
+   with open("test.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)
+
+Q7.Scrap data from Worldometer example: INDIA Data and run it on live mode Print additionally total number of CORONAVIRUS Cases, Deaths and Recovered.
+Ans7.
+import requests
+from bs4 import BeautifulSoup 
+import time
+while True:
+    url='https://www.worldometers.info/coronavirus/country/india'
+    page=requests.get(url)
+    page =page.text
+
+    soup=BeautifulSoup(page,'html.parser')
+
+    mess=soup.findAll('h1')
+    count=soup.findAll('div',{'class':'maincounter-number'})
+    mess=mess[1:]
+
+    for i,j in zip(mess,count):
+        print(f'{i.text} {j.text}')
+    time.sleep(3600)

Riya Khanna/Python(4).txt

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+Q1. Write a program to print new list which contains all the first character of the strings present in a list.
+Ans1.
+list=["GOA","RAJASTHAN","KARNATAKA","GUJRAT","MANIPUR","MADHYA PRADESH"]
+new_list=[]
+for i in list:
+    new_list.append(i[0][0])
+print(new_list)
+
+Q2. Write a program to replace each string with an integer value in a given list of strings.
+The replaced integer value should be the sum of ASCII values of each character  of type corresponding string.
+Ans2.
+l=['GAnga','Tapti','Kaveri','Yamuna','Narmada']
+c=[] 
+for i in l:
+    j=0
+    sum=0
+    for j in i:
+        sum=sum + ord(j)
+    c.append(sum)
+print(c)
+
+Q3. Run any Program at 9:00m. Date: 14th April 2020.
+Ans3. 
+import datetime
+import time
+task_date = datetime.datetime(2020, 4, 14, 9, 0, 0)
+while datetime.datetime.now() < task_date:
+    time.sleep(1)
+
+print("Hello! Its 14th April")
+
+
+Q4.Given 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.
+Ans4. 1) print(tuple[:])
+2.) 
+tuple=tuple[0:3]+tuple[4:]
+print(tuple)
+
+Q5. 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 greater than 20
+- then print those numbers those are less then 10 or equal to 10
+- store these above two list in two different list.
+
+REGex=[1,2,3,4,5,6,7,8,9,0,77,44,15,33,65,89,12]
+lst1=[]
+lst2=[]
+for i in REGex:
+    if i >20:
+        lst1.append(i)
+
+    if i <=10:
+        lst2.append(i)
+
+
+print(lst1)
+print(lst2)
+
+Q6. Execute standard LINUX Commands using Python Programming.
+Ans6.
+import os
+cmd = 'wc -l my_text_file.txt > new.txt'
+os.system(cmd)
+
+Q7.Revise *args and **kwargs Concepts.
+*args passes variable number of non-keyworded arguments list and on which operation of the list can be performed.
+**kwargs passes variable number of keyword arguments dictionary to function on which operation of a dictionary can be performed.
+1) *args
+def sum(*n):
+    sum = 0
+    for i in n:
+        sum = sum + i
+
+    print("Sum:",sum)
+
+sum(3,5)
+sum(4,5,6,7)
+sum(1,2,3,5,6)
+
+2) **kwargs
+def print_kwargs(**kwargs):
+        print(kwargs)
+
+print_kwargs(kwargs_1="riya", kwargs_2='khanna', kwargs_3=True)

Riya Khanna/python(3).txt

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+Q1. Find the Armstrong number between the numbers input by the user.
+Ans1.
+import math 
+a=int(input("Enter the lower limit:"))
+b=int(input("Enter the upper limit:"))
+lst=[]
+for i in range(a,b+1):
+    x=i
+    n=0
+    while x!=0:
+        x=x//10
+        n=n+1
+
+    p_sum=0
+    x=i
+    while x!=0:
+        digit=x%10
+        p_sum=p_sum+ math.pow(digit,n)
+        x=x//10
+
+    if p_sum==i:
+        lst.append(i)
+print(lst)
+
+Q2. Remove the special characters except spaces from the string " hello this world @2020!!!"
+Ans2.
+import re
+string = "hello this world @2020!!!"
+string = re.sub('[^a-zA-Z.\d\s]', '', string)
+print(string)
+
+Q3. You have a list of words=['Apple','banana','cat','REGEX','apple']. Sort the words in alphabetical order.
+Ans3.
+words=['Apple','banana','cat','REGEX','apple']
+words.sort()
+print(words)
+**The reason for this type of order is due the ASCII value. 
+For capital letters its starts from 65 whereas for small letters it starts from 97.

Riya Khanna/python(5).txt

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+Q1. Make a use of time Module and for loop to print Loading in animated form
+Ans1. 
+import time
+print("Loading", end="")
+for i in range(0,5):
+    print(".", end="",flush=True)
+    time.sleep(1)
+
+
+Q2. Make a digital clock and run it for 5 seconds.
+Ans2. 
+import time
+
+for i in range(0,6):
+    localtime = time.localtime()
+    result = time.strftime("%I:%M:%S %p", localtime)
+    print(result)
+    time.sleep(1)
+
+Q3. Difference between return and yield.
+Ans3.
+The yield statement suspends function’s execution and sends a value back to the caller, but retains enough state to enable function to resume where it is left off. 
+When resumed, the function continues execution immediately after the last yield run. 
+This allows its code to produce a series of values over time, rather than computing them at once and sending them back like a list. 
+Return sends a specified value back to its caller whereas Yield can produce a sequence of values.
+We should use yield when we want to iterate over a sequence, but don’t want to store the entire sequence in memory.
+
+Q4. Add anything in tuple.
+Ans4. 
+t1=(1,2,3,4)
+t2=((5,))
+new=t1[:]+t2[:]
+print(new)
+
+Q5. Whatsapp Texting using webbrowser library.
+Ans5. 
+import webbrowser
+import keyboard
+
+num=int(input("Enter the number you want to send message to: \n"))
+message=str(input("Enter your message: \n"))
+url=("https://wa.me/"+num+"?text="+message)
+webbrowser.open_new_tab(url)
+keyboard.press("enter")
+