list of paths                     common prefix
['/home/User/Photos', /home/User/Videos']    /home/User/         A valid path
['/usr/local/bin', '/usr/lib']               /usr/l              Not a valid path

# Python program to explain os.path.commonprefix() method 
    
# importing os module 
import os
  
# List of Paths
paths = ['/home/User/Desktop', '/home/User/Documents', 
         '/home/User/Downloads'] 
  
# Get the
# longest common path prefix
# in the specified list 
prefix = os.path.commonprefix(paths)
  
  
# Print the 
# longest common path prefix
# in the specified list 
print("Longest common path prefix:", prefix)
  
  
# List of Paths
paths = ['/usr/local/bin', '/usr/bin'] 
  
# Get the
# longest common path prefix
# in the specified list 
prefix = os.path.commonprefix(paths)
  
  
# Print the 
# longest common path prefix
# in the specified list 
print("Longest common path prefix:", prefix)

Longest common path prefix: /home/User/D
Longest common path prefix: /usr/