Question

1. Write a function to keep asking the user for names in the form of strings, sort alphabetically and store these names into a text file named names.txt

2.

Write a function that accepts a string as the argument, removes all alphabetical letters from the string, and returns it

3. Write a function that accepts a file name in the form of a string as the argument. Assume the text file contains single-digit numbers and letters. Read the entire contents of the text file and return two strings, one with numbers only, the another one with letters only

python

Answer 1

1. CODE

def func():
    file1 = open("names.txt","w")

    #list to store the names
    l = []
  
    run = True
  
    while(run):
        #input of names
        temp = input("Enter name:(-1 to stop entering) ")
        if(temp == '-1'):
            run = False
        else:
            l.append(temp)
  
    #sorting list
    l.sort()
  
    for name in l:
        file1.write(name+"\n")
    
    file1.close()
  
func()

SCREENSHOT 1:

OUTPUT 1:

FILE

CODE 2:

def func(s):
    t = ""
  
    #iterating each character
    for i in s:
        #store if not alphabet
       if (i < 'A' or i > 'Z') and (i < 'a' or i > 'z'):
           t += i
  
    #printing string
    print(t)
#input of string
s = input()
func(s)

OUTPUT 2:

SCREENSHOT 2:

CODE 3:

def func(fileName):
    #opening file
    file = open(fileName,"r")
  
    #reading file
    s = file.read()
  
    #spliting text by spaces in characters
    chars = s.split(' ')
    digits = []
    alpha = []
  
    #iterating each chars
    for char in chars:
        #if char is digit
        if char>='0' and char<='9':
            digits.append(char)
        #if char is alphabet
        elif (char>='a' and char<='z') or (char>='A' and char<='Z'):
            alpha.append(char)
    
    print(digits)
    print(alpha)
  
#input of file name
fileName = input()

func(fileName)

SCREENSHOT 3:

OUTPUT3 :

File:

1 filel = open("names.txt", "w") #input pf no. of inputs n = int(input) 6 7 #List to store the names 1 = 1 9 #input of names 10 for i in range(n): temp = input() 1.append(temp) 12 14 #sorting List 15 1.sort) 17 #writing in a file 18 for name in 1: 19 file1.write(name+"\n") 21 filel.close()

anubhav subro pratik sachin -- Program finished with exit code o Press ENTER to exit console.

anubhav pratik sachin subro

aln2u3b4h5a6v7 1234567 - - Program finished with exit code 0 Press ENTER to exit console.]

i 2 3 #input of string 5 = input() t = "" #iterating each character 6. for i in s: #store if not alphabet if (i < 'A' or i > 'Z') and (i < 'a' or i> 'Z'); t te i 11 #printing string 12 print(t) 14

1 #input of file name 2 fileName = input() 4 #opening file file = open(fileName, "r") 8 #reading file 5 = file.read() 10 #spliting text by spaces in characters 11 chars = s.split(' ') 12 digits = [] 13 alpha = [] 14 15 #iterating each chars 16" for char in chars: 17 #if char is digit 18 - if char>='0' and char<='9': digits.append(char) #if char is alphabet elif (char>='a' and char<='z') or (char>='A' and char<='Z'); alpha.append(char) 24 print(digits) print(alpha)

names.txt ['1', '2', '3', '4', '5', '6', '7'] ['a', 'n', 'u', 'b', 'h', 'a', 'v'] -- Program finished with exit code o Press ENTER to exit console-

1 a 1 n 2 u 3 b 4 h 5 a 6 v 7