Using python Create a file called quote.txt and put the following inside: Contra

Question

Using python

Create a file called quote.txt and put the following inside: Contrary to popular belief, Unix is user friendly. It just happens to be very selective about who it decides to make friends with.' -unknown Create a script to: Try and open a file that doesn't exist. Print an error open the quote.txt file create a frequency dictionary of all the letters in the quote (same as task 2) create a list that is sorted by the frequency of the letters from highest to lowest Expected Output The file doesn't exist.

Explanation / Answer

# sort srr2 according to arr1

def sort_arr1_according_to_arr2(arr2, arr1):

   

    temp=sorted(zip(arr1,arr2),key=lambda x : x[1], reverse = True)

   

    arr=[i[0] for i in temp]

    dep=[i[1] for i in temp]

   

    temp=sorted(zip(arr,dep),key=lambda x : x[0], reverse = True)

   

    arr=[i[0] for i in temp]

    dep=[i[1] for i in temp]

    for i in range( 0, len(arr) ):

   

        arr1[i] = arr[i]

       

        arr2[i] = dep[i]

try:

    #open file in read mode

    ptr = open('input.txt', 'r')

   

# in case of exception

except:

    print('The file doesn't exist')

   

#open file in read mode

fptr = open('quote.txt', 'r')

# store the frequence of each alphabet

# index 0 for a

# index 1 for b

# .

# .

# .

# index 25 for z

freq = [0] * 27

letter = []

for i in range(97, 123):

    letter.append(chr(i))

# read the content of file into strng

strng = fptr.read()

# convert to lower case

strng = strng.lower()

for ch in strng:

    # if current character is alphaber

    if ch.isalpha():

   

        # ord gives the ascii value of character

        ascii = ord(ch)

       

        # get the index of alphabet in freq

        index = ascii - 97

       

        freq[index] += 1

sort_arr1_according_to_arr2(letter, freq)

i = len(freq) - 1

while freq[i] == 0:

    i -= 1

   

# remove the elements with frequency 0

freq = freq[ : i + 1]

letter = letter[ : i + 1]

print(letter)

print(freq)

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