Question

I'm Getting an "unindented error" Please fix the bolded codes. Because I don't know whats going on. Thank You.

# This program exercises lists.

# The following files must be in the same folder:
# abstractcollection.py
# abstractlist.py
# arraylist.py
# arrays.py
# linkedlist.py
# node.py
# input.txt - the input text file.

# Input: input.txt
# This file must be in the same folder.
# To keep things simple:
# This file contains no punctuation.
# This file contains only lowercase characters.
# Output: output.txt
# This file will be created in the same folder.
# All articles are removed.
# Certain prepositions are removed.
# Duplicate consecutive words are reduced to a single occurrence.
# Note: The words "first" and "last" are not reduced.
# Certain misspelled words are flagged.
# Occurrences of "first" are moved to the front of a line.
# Occurrences of "last" are moved to the end of a line.

from arraylist import ArrayList
from linkedlist import LinkedList

# Data:

articles = ArrayList(["a", "the"])
prepositions = LinkedList(["after", "before", "from", "in", "off", "on", "under", "out", "over", "to"])
misspellings = ["foriegn", "excede", "judgement", "occurrance", "preceed", "rythm", "thier", ]

inputFile = open("input.txt", "r")
outputFile = open("output.txt", "w")

FIRST = "first"
FLAG = "FLAG:"
LAST = "last"

# Processing:

# Part 1:
# Removes all items from the words list that are found in the removals list.
# Input:
# words - an ArrayList of words, no uppercase, no punctuation
# wordsIter - a list iterator for the words list
# removals - the list of words to remove
def removeItems(words, wordsIter, removals):
wordsIter.first()
  
while(words.hasNext()):

word = words.next()

if word in removals:

wordsIter.remove()

# Part 2:
# Removes extra occurrances of consecutive duplicate words from the words list.
# Note: It does not reduce the words "first" and "last".
# Input:
# words - an ArrayList of words, no uppercase, no punctuation
# wordsIter - a list iterator for the words list
def reduceDuplicates(words, wordsIter):
previousWord=""
wordsIter.first()
while(words.hasNext()):
word=words.next()
if(word=="first" or word=="last"):
previousWord=word
continue
if(word==previousWord):
wordsIter.remove()
previousWord=word

# Part 3:
# Flags certain misspelled words in the words list by inserting "FLAG:" before them.
# Input:
# words - an ArrayList of words, no uppercase, no punctuation
# wordsIter - a list iterator for the words list
# misspellings - the list of misspelled words to flag
def flagMisspelled(words, wordsIter, misspellings):
wordsIter.first()
while(wordsIter.hasNext()):
word=words.next()
if word in misspellings:
wordsIter.insert(FLAG)
wordsIter.next()

# Part 4:
# Move all occurrences of "first" to the front of the words list.
# Input:
# words - an ArrayList of words, no uppercase, no punctuation
# wordsIter - a list iterator for the words list
def moveFirstLit(words, wordsIter):
countFirst = 0
wordsIter.first()
while (wordsIter.hasNext()):
word = wordsIter.next()
if (word == FIRST):
wordsIter.remove()
countFirst += 1
for count in range(countFirst):
wordsIter.first()
if (wordsIter.hasNext()):
wordsIter.next()
wordsIter.insert(FIRST)

# Part 5:
# Move all occurrences of "last" to the end of the words list.
# Input:
# words - an ArrayList of words, no uppercase, no punctuation
# wordsIter - a list iterator for the words list
def moveLastLit(words, wordsIter):
countLast = 0
wordsIter.last()
while (wordsIter.hasNext()):
word = wordsIter.next()
if (word == LAST):
wordsIter.remove()
countLast += 1
for count in range(countLast):
wordsIter.last()
if (wordsIter.hasNext()):
wordsIter.next()
wordsIter.insert(LAST)

def writeOutputLine(words):
outputLine = " ".join(words)
outputLine = outputLine + "\n"
print(outputLine, end="")
outputFile.write(outputLine)

# Main processing loop:
for line in inputFile:
words = ArrayList(line.split())
wordsIter = words.listIterator()

# Make no changes to blank lines:
if (len(words) == 0):
writeOutputLine(words)
continue

# Make no changes to comment lines:
if (words[0] == "#"):
writeOutputLine(words)
continue

# Remove articles:
removeItems(words, wordsIter, articles)
  
# Remove prepositions:
removeItems(words, wordsIter, prepositions)

# Reduce duplicate consecutive words to a single occurrence:
reduceDuplicates(words, wordsIter)

# Insert "FLAG:" before certain misspelled words:
flagMisspelled(words, wordsIter, misspellings)
  
# Move all occurrences of "first" to the front of the line:
moveFirstLit(words, wordsIter)
  
# Move all occurrences of "last" to the end of the line:
moveLastLit(words, wordsIter)

# Write output line:
writeOutputLine(words)

# Wrap-up
inputFile.close()
outputFile.close()

Answer 1

# This program exercises lists.

# The following files must be in the same folder:
# abstractcollection.py
# abstractlist.py
# arraylist.py
# arrays.py
# linkedlist.py
# node.py
# input.txt - the input text file.

# Input: input.txt
# This file must be in the same folder.
# To keep things simple:
# This file contains no punctuation.
# This file contains only lowercase characters.
# Output: output.txt
# This file will be created in the same folder.
# All articles are removed.
# Certain prepositions are removed.
# Duplicate consecutive words are reduced to a single occurrence.
# Note: The words "first" and "last" are not reduced.
# Certain misspelled words are flagged.
# Occurrences of "first" are moved to the front of a line.
# Occurrences of "last" are moved to the end of a line.

from arraylist import ArrayList
from linkedlist import LinkedList

# Data:

articles = ArrayList(["a", "the"])
prepositions = LinkedList(["after", "before", "from", "in", "off", "on", "under", "out", "over", "to"])
misspellings = ["foriegn", "excede", "judgement", "occurrance", "preceed", "rythm", "thier", ]

inputFile = open("input.txt", "r")
outputFile = open("output.txt", "w")

FIRST = "first"
FLAG = "FLAG:"
LAST = "last"

# Processing:

# Part 1:
# Removes all items from the words list that are found in the removals list.
# Input:
# words - an ArrayList of words, no uppercase, no punctuation
# wordsIter - a list iterator for the words list
# removals - the list of words to remove
def removeItems(words, wordsIter, removals):
        wordsIter.first()       
        while(words.hasNext()):
                word = words.next()
                if word in removals:
                        wordsIter.remove()

# Part 2:
# Removes extra occurrances of consecutive duplicate words from the words list.
# Note: It does not reduce the words "first" and "last".
# Input:
# words - an ArrayList of words, no uppercase, no punctuation
# wordsIter - a list iterator for the words list
def reduceDuplicates(words, wordsIter):
        previousWord=""
        wordsIter.first()
        while(words.hasNext()):
                word=words.next()
                if(word=="first" or word=="last"):
                        previousWord=word
                        continue
                if(word==previousWord):
                        wordsIter.remove()
                previousWord=word

# Part 3:
# Flags certain misspelled words in the words list by inserting "FLAG:" before them.
# Input:
# words - an ArrayList of words, no uppercase, no punctuation
# wordsIter - a list iterator for the words list
# misspellings - the list of misspelled words to flag
def flagMisspelled(words, wordsIter, misspellings):
        wordsIter.first()
        while(wordsIter.hasNext()):
                word=words.next()
                if word in misspellings:
                        wordsIter.insert(FLAG)
                        wordsIter.next()

# Part 4:
# Move all occurrences of "first" to the front of the words list.
# Input:
# words - an ArrayList of words, no uppercase, no punctuation
# wordsIter - a list iterator for the words list
def moveFirstLit(words, wordsIter):
        countFirst = 0
        wordsIter.first()
        while (wordsIter.hasNext()):
                word = wordsIter.next()
                if (word == FIRST):
                        wordsIter.remove()
                        countFirst += 1
        for count in range(countFirst):
                wordsIter.first()
                if (wordsIter.hasNext()):
                        wordsIter.next()
                        wordsIter.insert(FIRST)

# Part 5:
# Move all occurrences of "last" to the end of the words list.
# Input:
# words - an ArrayList of words, no uppercase, no punctuation
# wordsIter - a list iterator for the words list
def moveLastLit(words, wordsIter):
        countLast = 0
        wordsIter.last()
        while (wordsIter.hasNext()):
                word = wordsIter.next()
                if (word == LAST):
                        wordsIter.remove()
                        countLast += 1
        for count in range(countLast):
                wordsIter.last()
                if (wordsIter.hasNext()):
                        wordsIter.next()
                        wordsIter.insert(LAST)

def writeOutputLine(words):
        outputLine = " ".join(words)
        outputLine = outputLine + "\n"
        print(outputLine, end="")
        outputFile.write(outputLine)

# Main processing loop:
for line in inputFile:
        words = ArrayList(line.split())
        wordsIter = words.listIterator()

        # Make no changes to blank lines:
        if (len(words) == 0):
                writeOutputLine(words)
                continue

        # Make no changes to comment lines:
        if (words[0] == "#"):
                writeOutputLine(words)
                continue

        # Remove articles:
        removeItems(words, wordsIter, articles)

        # Remove prepositions:
        removeItems(words, wordsIter, prepositions)

        # Reduce duplicate consecutive words to a single occurrence:
        reduceDuplicates(words, wordsIter)

        # Insert "FLAG:" before certain misspelled words:
        flagMisspelled(words, wordsIter, misspellings)

        # Move all occurrences of "first" to the front of the line:
        moveFirstLit(words, wordsIter)

        # Move all occurrences of "last" to the end of the line:
        moveLastLit(words, wordsIter)

        # Write output line:
        writeOutputLine(words)

# Wrap-up
inputFile.close()
outputFile.close()

**************************************************
If any issues, please ask in comments. you have not given arraylist and linkedlist files, so i can not run and test this code.

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