O que está se juntando a usar em python
>>> sentence = ['this','is','a','sentence']
>>> '-'.join(sentence)
'this-is-a-sentence'
RosiePuddles
>>> sentence = ['this','is','a','sentence']
>>> '-'.join(sentence)
'this-is-a-sentence'# example of join() function in python
numList = ['1', '2', '3', '4']
separator = ', '
print(separator.join(numList))