TYL P3 - Files(count of vowels, consonants, line numbers)

TYL P3 - Files (count of vowels, consonants, line numbers)

9.      Write a python program to count the number of vowels and consonants in a file.

 Read line by line
set up a counter variable for consonants and vowels.
convert the case of a line to lower or upper
traverse each character in the line
check if there are alphabetic, using isalpha()
then check if the character is a vowel or not.

Debugging
print out the contents of the line and debug if the output is not as expected.
Try out with a small file, then move to a large file.

Program:

fname = input("Enter a file name:")

 try:
    fhand = open(fname)
except:
    print("Invalid File")
    exit()

 vowels=0
consonants=0
for line in fhand:
    line = line.lower()
   # print('Debug:',line)
    for ch in line:
        if ch.isalpha():
            if ch in 'aeiou':
                vowels+=1
            else:
                consonants+=1

 print('Consonants:',consonants)
print('Vowels:', vowels)

Output:

Enter a file name:romeo-full.txt
Consonants: 4089
Vowels: 2614


10.    Write a program in python to print the file contents with line number using file.


Do a rstrip() of each line before printing to avoid an extra line whilst printing.
Set up a counter variable to track the line count.

Program:

fname = input("Enter a file name:")
try:
    fhand = open(fname)
except:
    print("Invalid File")
    exit()

lineCount=1

for line in fhand:
    line=line.rstrip()
    print(lineCount,": ",line)

Output:

Enter a file name:test.txt
1 :  Hi there
2 :  How are you

Comments

Post a Comment

Popular posts from this blog

TYL - Food Corner Program

Food Corner Program. We will make this program more robust after you learn try-catch.  For now, we will calculate for only 1 order.  Again, later you can use loops to calculate for many orders.  As we have not learnt any data structures as lists, dictionaries etc, we will not use them now. FoodCorner home delivers vegetarian and non-vegetarian combos to its customer based on order. A vegetarian combo costs Rs.120 per plate and a non-vegetarian combo costs Rs.150 per plate. Their non-veg combo is really famous that they get more orders for their non-vegetarian combo than the vegetarian combo. Apart from the cost per plate of food, customers are also charged for home delivery based on the distance in kms from the restaurant to the delivery point. The delivery charges are as mentioned below: Distance in kms          Delivery charge in Rs. Per kms For first 3 kms                       ...
Read more

Classes and objects solution

Image
Question 1 Write a definition for Student class Define __init__(self, marks=[]) for the Student class Define add_marks(self,lst) that appends mark to the marks list Create two students, s1 and s2. Add [25,45,65] to s1 Print marks of s1 and s2 Observe what happens? Fix the code. Initial Implementation class Student:     def __init__(self, marks=[]):         self.marks = marks     def add_marks(self,lst):         self.marks.extend(lst) s1= Student() s2=Student() s1.add_marks([25,45,65]) print('Contents of s1',s1.marks) print('Contents of s2',s2.marks) Output: Contents of s1 [25, 45, 65] Contents of s2 [25, 45, 65] Observation: list is getting added to s1, but s2 also shows the same contents.  What is expected is an empty list for s2 but s1 consisting of [25,45,65] Why this happens? https://stackoverflow.com/questions/4841782/python-constructor-and-default-value Solution: def __ini...
Read more

TYL - Salary Hike - Python Problem

Salary Hike Problem using Python We are not going to use any complex data structures in Python here. You will need to know the if else construct.  After we learn try... catch we will make this program more robust. if  condition:      statements      .... elif condition:      statements     ... ... else:     statement An organization has decided to provide salary hike to its employees based on their job level. Employees can be in job levels 3, 4 or 5. Hike percentage based on job levels are given below: Job level         Hike Percentage (applicable on current salary) 3                        15 4                         7 5                         5 In case of invalid job level, consider hike percentage to be ...
Read more