>>> from consecutive import consecutive_consonants

>>> consecutive_consonants ('The First World War lasted from 1914 to 1918')
2
>>> consecutive_consonants ('Pozdravlyayu s prazdnikom, Vsego nailuchshego!')
5
>>> consecutive_consonants ('abcdevxyz')
3
>>> consecutive_consonants ('It was a softly lighted mirror in the checkroom. I went there from the restaurant straight through a large corridor')
7