So uhhh what does my Coding Professor mean with this:
1. What is the output of:
wordlist = ['cat','dog','rabbit']
letterlist = [ ]
for aword in wordlist:
for aletter in aword:
letterlist.append(aletter)
print(letterlist)
Modify your code above so that only a single copy of each letter is output.
I am confused as what he wants and don’t want to ask….
Caitlin Cook Caitlin Cook I agree, it took me a bit, but I believe he just wants to know the output of the original code for #1.
Which should be each letter from the words seperated in the form a list:
[c, a, t, d, o...]
Caitlin Cook
I have set out 3 snippets showing how to break it down.
Uncomment to see the development
words = ['cat','dog','rabbit']
letters= [ ]
#for word in words:
# print(word)
#for word in words:
# for letter in word:
# print(letter)
for word in words:
for letter in word:
if letter not in letters:
letters.append(letter)
print(letters)
My best guess is that he wants you to check to see if a letter in the letterlist was already appended.
You can do this by implementing the following condition before appending a letter:
if aletter not in letterlist:
# append aletter to letterlist
...
wordlist = ['cat','dog','rabbit']
letterlist = [ ]
for aword in wordlist:
for aletter in aword:
letterlist.append(aletter)
print(letterlist)
def fix(letterlist):
s = set()
list = []
for ch in letterlist:
if ch not in s:
s.add(ch)
list.append(ch)
return ''.join(list)
print(fix(letterlist))
for aword in wordlist:
for aletter in letterlist:
letterlist.append(aletter)
letterlist = set(letterlist)
print(letterlist)
A set contains only one copy of any element... So, casting as a set will do as well...
