Unable to delete .lock files within geodatabase using Python

Question

I am having problems with lock files while deleting and copying geodatabases for backup purposes.

print "Now backing up your Geodatabase"
distutils.dir_util.remove_tree (r"\\Msukserver\gis\geodatabase BACKUP\EVERYONE\Mining Features (MATTHEW).gdb", 0, 0) # deletes 'everyone' backup copy
distutils.dir_util.copy_tree(r"\\Msukserver\gis\geodatabase BACKUP\MATT\Mining Features (MATTHEW).gdb", r"\\Msukserver\gis\geodatabase BACKUP\EVERYONE\Mining Features (MATTHEW).gdb") # backup the last backup to 'everyone'
print "old backup copied"
distutils.dir_util.remove_tree(r"\\Msukserver\gis\geodatabase BACKUP\MATT\Mining Features (MATTHEW).gdb", 0, 0) # deletes last backup
print "old backup deleted"
distutils.dir_util.copy_tree(r"C:\GIS Home\Mining Features (MATTHEW).gdb", r"\\Msukserver\gis\geodatabase BACKUP\MATT\Mining Features (MATTHEW).gdb") # copy mining features to create new backup
print "::::::::::::::::::::::Backup Complete::::::::::::::::::::::"
raw_input("Push Return key to close...")

I am getting a 'permission denied' error on the '.lock' files. Is there a way of copying/deleting all the file except those with a .lock extension? or a way to continue/force with errors? I am aware that I am currently copying/deleting the entire directory and may need to change my code to copy/delete files only.