Join whole word by its Tag Python

Question

let say i have this sentences:

His/O name/O is/O Petter/Name Jack/Name and/O his/O brother/O name/O is/O 
Jonas/Name Van/Name Dame/Name

How can i get result like this:

Petter Jack, Jonas Van Dame.

So far i've already tried this, but still its just join 2 word :

import re
pattern = re.compile(r"\w+\/Name)
sent = sentence.split()
for i , w in sent:
    if pattern.match(sent[i]) != None:
        if pattern.match(sent[i+1]) != None:
        #....
        #join sent[i] and sent[i+1] element
        #....

Answer 1

Try something like this

pattern = re.compile(r"((\w+\/Name\s*)+)")
names = pattern.findall(your_string)
for name in names:
    print(''.join(name[0].split('/Name')))

Answer 2

I'm thinking about a two-phase solution

r = re.compile(r'\w+\/Name(?:\ \w+\/Name)*')    
result = r.findall(s)
# -> ['Petter/Name Jack/Name', 'Jonas/Name Van/Name Dame/Name']

for r in result:
    print(r.replace('/Name', ''))
# -> Petter Jack
# -> Jonas Van Dame