Question

Write a python program to remove all the lines that contain the character 'a' in a file and write it to another file.

Answer 1

Answer:

To achieve this, we will first need to open the text file, read the file and then check for the upper case letters.

To open a text file, we use open() but keep in mind that the text file should be in the same directory as your python file.

Coming back, open() syntax is:

open(textfile , function)

For function, there are 2 types. Read and write. What we want is to read the text file, so we use 'r+'

opening = open('filename.txt' , 'r+')

Now, we need to read the text inside the file.

text = opening.read()

Now, if we print text, the output would be all the text inside the file. Now comes the second step, checking for the upper case letters.

To see if any alphabet is a upper case, we use .isupper()

To do this, we will have to use the for loop to iterate over all the characters in text.

CODE:

opening = open('filename.txt' , 'r+')

text = opening.read()

opening.close() #Always close the file

count = 0

for letter in text:

  if letter.isupper():

      count += 1

print(f'Total number of upper case letters are {count}')