Question

Modify your program from Learning Journal Unit 7 to read dictionary items from a file and write the inverted dictionary to a file. You will need to decide on the following:

• How to format each dictionary item as a text string in the input file.
• How to covert each input string into a dictionary item.
• How to format each item of your inverted dictionary as a text string in the output file.

Create an input file with your original three-or-more items and add at least three new items, for a total of at least six items.

Include the following in your Learning Journal submission:

• The input file for your original dictionary (with at least six items).
• The Python program to read from a file, invert the dictionary, and write to a different file.
• The output file for your inverted dictionary.
• A description of how you chose to encode the original dictionary and the inverted dictionary in text files.

Here is my code for assignment 7 that needs to be modified;

alphabet = "abcdefghijklmnopqrstuvwxyz"
test_dups = ["zzz","dog","bookkeeper","subdermatoglyphic","subdermatoglyphics"]
test_miss = ["zzz","subdermatoglyphic","the quick brown fox jumps over the lazy dog"]
def histogram(s):
    d = dict()
    for c in s:
        if c not in d:
            d[c]=1
        else:
            d[c] += 1
    return d
#part 1
def has_duplicates():
    for string in test_dups:
        dictionary=histogram(string)
        duplicates=False
        for ch in dictionary.keys():
            if dictionary[ch] > 1:
                duplicates=True
                break
        if duplicates==True:
            print(string,"has duplicates")
        else:
            print(string,"has no duplicates")
#part 2
def missing_letters(string):
    answer=""
    for ch in alphabet:
        if ch not in string:
            answer=answer+ch
    return answer
has_duplicates()
for i in test_miss:
    answer=missing_letters(i)
    if len(answer)>=1:
        print(i,"is missing letters",answer)
    else:
        print(i,"uses all the letters")

Answer 1

Solution for the above Problem:

/copyable code

def invert_Dictionary(x):

inverse=dict()

for key1 in x.keys():

list_items = x.get(key1)

inverse[list_items]=key1

return inverse

def readfile(file_name):

x=dict()

with open(file_name,'r') as infile:

for line1 in infile.readlines():

line1=line1.strip().split(':')

x[line1[0]]=line1[1]

print('file Read',x)

return x

def writefile(invert_d,file_name):

with open(file_name,'w+') as wtfile:

for key1,value1 in invert_d.items():

wtfile.write(str(key1)+':'+str(value1)+'\n')

def main():

x = readfile('dic.txt')

invt_d = invert_Dictionary(x)

print('Dictionary inverted',invt_d)

writefile(invt_d,'inverted_dic.txt')

main()

Screenshot:

Output: