Concatenating incomplete setences from lists in Python

Question

I have a list which contains complete and incomplete sentences. The complete sentences are terminated with either ., ?, or !. How do I loop through the elements in the list and join incomplete sentences? For instance,

Input:

myList = ['My first','sentence is incomplete.','Hold on.','Is the second complete?','The third','might not be!','Thanks.','Really appreciate.']

Desired output:

myList = ['My first sentence is incomplete.','Hold on.','Is the second complete?','The third might not be!','Thanks','Really appreciate.']

Answer 1

Here is one brute-force method using collections.defaultdict.

from collections import defaultdict

myList = ['My first','sentence is incomplete.','Hold on.','Is the second complete?',
          'The third','might not be!','Thanks.','Really appreciate.']

d = defaultdict(list)

idx = 0
for j in myList:
    d[idx].append(j)
    if any(j.endswith(k) for k in ('.', '!', '?')):
        idx += 1

sentences = [' '.join(v) for _, v in sorted(d.items())]

Result:

['My first sentence is incomplete.',
 'Hold on.',
 'Is the second complete?',
 'The third might not be!',
 'Thanks.',
 'Really appreciate.']