Learning words simple programme

Question

I am trying to make a programme that takes words from the user, puts them in a list and then prints the amount of unique words that the user entered. The programme prints out the unique words when it receives a blank input. This is what I wrote.

amount = []
nuword = input('Word: ')
while nuword != '':
  nuword = input('Word: ')
  if nuword in amount:
    amount.pop(-1)
  else:
    amount.append(nuword)
print('You know',len(amount), 'unique word(s)!')

Is there a simple way to print all of the unique words in a list. Like some kind of function? Or do I have to change something in the loop?

See : http://stackoverflow.com/questions/7961363/removing-duplicates-in-lists — nha, Mar 07 '16 at 21:33

score 0 · Answer 1 · answered Mar 07 '16 at 21:35

0

counts = {}

nuword = 1
while nuword:
    nuword = input("Word: ")
    if nuword not in counts: counts[nuword] = 0
    counts[nuword] += 1

uniquewords = []
for word, count in counts.items():
    if count != 1: continue
    uniquewords.append(word)

answered Mar 07 '16 at 21:35

inspectorG4dget

110,290
27
149
241

score 0 · Answer 2 · answered Mar 07 '16 at 21:42

This is an ideal candidate for sets, which are similar to lists, but only contain one copy of something.

Example set usage:

words = set()
words.add('apple')
words.add('bee')
words.add('apple')
print(words)
> {'apple', 'bee'}

Here is your code slightly modified to use sets

amount = set()
nuword = input('Word: ')
while nuword != '':
    nuword = input('Word: ')
    amount.add(nuword)
print('You know',len(amount), 'unique word(s)!')

I would also recommend considering the case of beginning/trailing spaces and upper/lower case. Right now, all of the following will count as their own word

abc
 abc
abc  
aBc

(Hint, the 3rd one had trailing spaces) We'll use some handy methods to get rid of the whitespace and turn to lower case.

' aBc   '.strip().lower()
> 'abc'

With all the edits:

amount = set()
nuword = input('Word: ')
while nuword != '':
    nuword = input('Word: ')
    amount.add(nuword.strip().lower())
print('You know',len(amount), 'unique word(s)!')

Learning words simple programme

2 Answers2