Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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screenshot of input and output 

 

import string

def readfile(fname):
pass
#Open the file for reading
#Read the contents as one long string
#Close the file
#Remove the punctuation
#Return the lower-case contents

def main():
filename = "gb.txt"
#Use readfile() to get the text
#Create an empty list to hold the unique words
#Split the text into a list of words (split on whitespace)
#For each word in the list of words
#If the word is not in the unique word list
#Add it (append it to the unique word list)
#Print the number of unique words
#Print the unique words

main()

 

4. Write a program that counts the number of unique words in a text file; use gb.txt as a test file - but
your program should work for any file if the filename is changed. Write a function readfile() that
reads the file, removes punctuation, and returns the contents as a lower case string. In main, count
the number of unique words and print that number and the words that only occur one time.
Save & Run
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Show CodeLens
1 import string
2
3 def readfile (fname) :
4
pass
#Open the file for reading
6
#Read the contents as one long string
7
#Close the file
#Remove the punctuation
#Return the lower-case contents
10
11 def main ():
12
filename = "gb.txt"
13
#Use readfile () to get the text
14
#Create an empty list to hold the unique words
#Split the text into a list of words (split on whitespace)
#For each word in the list of words
15
16
17
#If the word is not in the unique word list
18
#Add it (append it to the unique word list)
19
#Print the number of unique words
20
#Print the unique words
21
22 main ()
23
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Transcribed Image Text:4. Write a program that counts the number of unique words in a text file; use gb.txt as a test file - but your program should work for any file if the filename is changed. Write a function readfile() that reads the file, removes punctuation, and returns the contents as a lower case string. In main, count the number of unique words and print that number and the words that only occur one time. Save & Run Load History Show CodeLens 1 import string 2 3 def readfile (fname) : 4 pass #Open the file for reading 6 #Read the contents as one long string 7 #Close the file #Remove the punctuation #Return the lower-case contents 10 11 def main (): 12 filename = "gb.txt" 13 #Use readfile () to get the text 14 #Create an empty list to hold the unique words #Split the text into a list of words (split on whitespace) #For each word in the list of words 15 16 17 #If the word is not in the unique word list 18 #Add it (append it to the unique word list) 19 #Print the number of unique words 20 #Print the unique words 21 22 main () 23
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