IPA Generator 2.0 (Python 3)

Converts English text to IPA notation

I noticed some people were making use of my first IPA program, so I decided to write a better version. This program utilizes the Carnegie-Mellon University Phonetic Dictionary Database to convert English words into IPA.

English to IPA 2.0
Word or Phrase: unnaturally
List of possible transcriptions: 
1. ənnæʧərəli
2. ənnæʧərli
3. ənæʧərli
4. ənnæʧrəli

Some notes and key functions:

The CMU_dict.txt file must be in the same directory as conversion.py in order to work!
Words which cannot be found in the CMU dictionary are ignored and simply reprinted.
Simple punctuation is stripped away (?, !, ., etc).
Should only take one line of input at a time
convert(input, retrieve) - takes a string or list of English text and returns it as a single IPA string. If the retrieve parameter is set to 'ALL', a list is instead returned, with all possible combinations of discovered transcriptions returned.
```
convert('the quick brown fox jumped over the lazy dog')
ðə kwɪk braʊn fɑks ʤəmpt oʊvər ðə lezi dɔg   
```
isin_cmu(word) - checks if a given word or phrase is in the CMU phonetic dictionary. If a phrase is given, only returns true if all words are in the dictionary.

get_ipa_list(input) - returns each transcribed IPA token as a list of all discovered transcriptions.

  get_ipa_list('The receptionists were busy')
  [['ðə', 'ði'], ['risɛpʃənɪs', 'risɛpʃənɪsts', 'rɪsɛpʃənɪs', 'rɪsɛpʃənɪsts'], ['wər'], ['bɪzi']]

CanadianCommander/English_to_IPA

IPA Generator 2.0 (Python 3)