Question

Part 1: Write a Python function called reduceWhitespace that is given a string line and returns the line with all extra whitespace characters between the words removed.

For example, ‘This line has extra space characters'

'This line has extra space characters’

• Function name: reduceWhitespace

• Number of parameters: one string line

• Return value: one string line The main file should handle the file operations to read from a .txt file you create and call the function from the module you create.

In main you should also print out your text from the file before the function call and print the result after the function call, showing that the function works. Additionally, write the lines with reduce whitespaces into a text file.

Your function should also include the specification (docstring).

Note: the code will be tested by giving it a .txt file, so you should prompt the user for the text file.

Lab 9 Part 2:

In the same module, write a Python function named countAllLetters that is given a string line and returns a list containing every letter and character in the line and the number of times that each letter/character appears (with upper/lower case letters counted together).

For example,

‘This is a short line’ -> [(‘t’,2), (‘h’,2), (‘i’,3), (‘s’,3), (‘ ‘,4), (‘a’,1),

(‘o’,1), (‘r’,1), (‘l’,1), (‘n’,1), (‘e’,1)]

• Function name: countAllLetters

• Number of parameters: one string line

• Return value: a list

The main file should handle the file operations to read from a new .txt file you create and call the function from the module you create. In main, you should print out the text you read from the file, then call the function and then print out the resulting list, showing that the function works. You do not need to write the output into a text file.

Your function should also include the specification (docstring).

Note: the code will be tested by giving it a .txt file, so you should prompt the user for the text file.

Please zip both files

Answer 1

Program

MyString.py module

"""

• Function name: reduceWhitespace

• Number of parameters: one string line

• Return value: one string line with extra white space between words removed

"""

def reduceWhitespace(line):

    # first get all the words using string's split function

    # split function with no parameter will split string according to whitespaces

    # without counting empty string

    tokens=str(line).split()

    reduced_line=str()

    # append all the words with a single space in between words

    for item in tokens:

        reduced_line=reduced_line+item+" "

    # return the new line

    return reduced_line

"""

• Function name: countAllLetters

• Number of parameters: one string line

• Return value: a list of all the letters in the input string along with

    their count

"""

def countAllLetters(line):

    # convert all character to lower

    line=str(line).lower()

    chars = []

    # initialize empty list

    letterCount=list()

    # for every word in the line

    for token in line.split():

        # for every character in the word

        for c in token:

            # if the present character is not in list

            if chars.count(c)==0:

                # add the character to list

                chars.append(c)

    # for every character present in string

    for c in chars:

        # append to letterCount list the character and its count in the string

        # count function in string returns the number of occurences of the substring in the string

        letterCount.append((c,line.count(c)))

    # return the letter count list

    return letterCount

main.py

# import the module created

import MyString

file_name=str(input("Enter the file Name:"))

# open 2 files one input file and one output file

fileIn=open(file_name)

fileOut=open("out.txt","w")

# for every line in input file

for line in fileIn:

    # call to reduceWhitspace function

    print("reduceWhitespace()")

    print(line)

    reduced_Line=MyString.reduceWhitespace(line)

    print("Reduced line is:")

    print(reduced_Line)

    # write to file the minimized line

    fileOut.write(reduced_Line+"\n")

    # call to countAllLetters function

    print("countAllLetters()")

    print(line)

    letters_count=MyString.countAllLetters(line)

    # print the letters count

    print(letters_count)

output

in.txt

This line has extra space characters
This line has extra space characters
This is a short line

out.txt

This line has extra space characters
This line has extra space characters
This is a short line

refer to above screenshots for indentation and output