fcntl.lockf(lock_fd, fcntl.LOCK_EX | fcntl.LOCK_NB)
except IOError, e:
if errno.errorcode[e.errno] == 'EACCES' or errno.errorcode[e.errno] == 'EAGAIN':
fcntl.lockf(lock_fd, fcntl.LOCK_EX | fcntl.LOCK_NB)
except IOError, e:
if errno.errorcode[e.errno] == 'EACCES' or errno.errorcode[e.errno] == 'EAGAIN':