from bs4 import BeautifulSoup


data= """<div id="filemanager-5adc3f37d4226" class="filemanager fm-loaded fm-nofiles fm-noitems">"""

soup = BeautifulSoup(data)

for tag in soup.find_all("div", class_="filemanager fm-loaded fm-nofiles fm-noitems") :
    id= tag.get('id')
    token= id[-13:]
    print token