Python program t4.py file apple 1 1 ball art dog & pen rat 4 apple 1@. carrot !
ID: 3919639 • Letter: P
Question
Python program
t4.py file
apple
1
1
ball
art
dog
&
pen
rat
4
apple
1@.
carrot
!
orange
ant
ant
ant
ball
stick
pen
_
$a
***
goodbye
The Program Spec Write a program that reads in a filename provided by the user, opens it and reads all of the lines. Create a dictionary to hold the line numbers for each valid identifier found. Your solution will need to process each ine to determine whether a valid identifier exists on that line and if so,record both the line number and identifier found in the dictionary A valid identifier must be a string consisting of only letters, numbers and underscores. If a line contains an invalid identifier no record is made in the dictionary. If a line contains a valid identifier already recorded in the dictionary append the line number to the dictionary log of where the identifier was found Input Error Checking: For simplicity a python file is provided to feed into your dictionary generator. filename is t4.py provided in the link below Test Run Requirements: Use the provided t4.py file as your test run validator. Here are some other tips and requirements 1. Keep provided test file intact 2. Use t4.py as your input test file to generate submission run output 3. Verify identifiers are valid; ignore if invalid Here is a sample run: The apple: (1, 11 art:[5Explanation / Answer
CODING:
# reading file and taking lines
fname = input("Enter a file name:")
flines = open(fname, "r").read().split(" ")
d = {}
# looping through each line
for i in range(len(flines)):
word = flines[i]
flag = True
# this is to check if word has valid characters
for letter in word:
if not((letter>='a' and letter <='z') or (letter>='A' and letter<='Z') or letter == '_'):
flag = False
break
# if no invalid characters are there
if flag:
if word in d:
d[word].append(i+1)
else:
d[word] = [i+1]
# printing output
for each in d:
print(each, d[each])
SAMPLE OUTPUT:
Enter a file name: t4.py
apple [1, 11]
ball [4, 19]
art [5]
dog [6]
pen [8, 21]
rat [9]
carrot [13]
orange [15]
ant [16, 17, 18]
stick [20]
_ [22]
goodbye [25]
'''
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