state-transitions | Provides a set of components to animate between elements | Animation library

class Matter(object):
    pass

lump = Matter()


from transitions import Machine
machine = Machine(model=lump, states=['solid', 'liquid', 'gas', 'plasma'], initial='solid')

# Lump now has state!
lump.state
>>> 'solid'


# The states
states  

# Set up logging; The basic log level will be DEBUG
import logging
logging.basicConfig(level=logging.DEBUG)
# Set transitions' log level to INFO; DEBUG messages will be omitted
logging.getLogger('transitions').setLevel(logging.INFO)

# Business as us  

@Override
    public void configure(StateMachineTransitionConfigurer transitions) throws Exception {
        transitions
          .withExternal()
          .source("SI")
          .target("S1")
          .event("E1")
          .action(initAction())
  

@Override
    public void configure(StateMachineTransitionConfigurer transitions) throws Exception {
        transitions.withExternal()
                .source(ApplicationReviewStates.PEER_REVIEW).target(ApplicationReviewStates.PRINCIPAL_REVIEW).even  

@Override
    public void configure(StateMachineTransitionConfigurer transitions) throws Exception {
        transitions.withExternal()
                .source("SI").target("SF").event("end")
                .and().withExternal()
                .sou