ValueError: You must specify the list of players.

[viponedream]

When i run
python train_mineral_shards.py --algorithm=a2c

it says:
ValueError: You must specify the list of players.

does anyone know what happen?

[lml519]

i got the same problem, did u solve it? i would like to thank u a lot ,if u can help me.

[lbianculli]

@viponedream and @lml519

New pysc2 api requires list of players. For example:
players=[sc2_env.Agent(sc2_env.Race.terran)]

Note even a single player needs to be wrapped in a list. Hopefully this helps.

[lml519]

@lbianculli
thanks for your help. But I have a little question. I want to know where the player should add to? Directly add them after the command "python train_mineral_shards.py --algorithm=a2c" or see them as codes and add them into a file? If see them as code, which file can I add them in?

Thanks a lot. Your reply has hepled me alot. I am very appreciate, if u can give me hands again.

[lml519]

@lbianculli
when i add them into :
with sc2_env.SC2Env(
map_name="DefeatZerglingsAndBanelings",
step_mul=step_mul,
visualize=True,
players=[sc2_env.Agent(sc2_env.Race.terran)],

it comes a new error:Please specify agent_interface_format.

[lbianculli]

Hi @lml519 ,
I generally add them in the code, I dont think this repo allows for adding players via CLI. Below is some example code that I use as a boilerplate:

`
self._env = sc2_env.SC2Env(players=[sc2_env.Agent(sc2_env.Race.terran)],

        map_name=self.id,

        visualize=self.render,

        agent_interface_format=[features.parse_agent_interface_format(

            feature_screen=self.spatial_dim,

            feature_minimap=self.spatial_dim,

            rgb_screen=None,

            rgb_minimap=None

        )],

        step_mul=self.step_mul,)

`

As you can see, the agent_interface_format can be found in the pysc2.lib.features file. Last I checked, going to SC2Env's docstring tells you which args are/arent needed as well.

Hope this helps.

[lml519]

@lbianculli thanks a lot. I have checked the SC2Env and change the code in "subproc_vec_env.py"and"train_mineral_shards".Then,the output change into :
raise _exceptions.UnparsedFlagAccessError(error_message)
absl.flags._exceptions.UnparsedFlagAccessError: Trying to access flag --sc2_run_config before flags were parsed.
absl.flags.exceptions.UnparsedFlagAccessError: Trying to access flag --sc2_run_config before flags were parsed.
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\site-packages\pysc2\run_configs_init.py", line 39,
in get
if FLAGS.sc2_run_config is None: # Find the highest priority as default.
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\site-packages\absl\flags_flagvalues.py", line 491, in
getattr
raise _exceptions.UnparsedFlagAccessError(error_message)
absl.flags._exceptions.UnparsedFlagAccessError: Trying to access flag --sc2_run_config before flags were parsed.

I think the main problem is that the different between pysc2-version2.0 and the version this using. It's very hard to change them into correct. Do u know how to solve this problem. Thank u very much.

[lml519]

@lbianculli I've tried all 4 players in SC2Env, and they all output the same results.Just like the output I showed above. Then I tried to add the player into 2,3 and 4. It display the errors just like the warning which has been written in the file. Such as "Single player maps require exactly one Agent." So I think the reason of this problem is caused by the changement has some conflicts between Pysc2-Version 2.0 and 1.0.

[lbianculli]

If you add this line

flags.FLAGS(sys.argv)

somewhere after the declaration of all command line flags (within the code itself), that should take care of the first error, e.g.

 flags.DEFINE_string('example_str', 'example', 'Just some string.')

flags.FLAGS(sys.argv)

As for the second error. I'd imagine that is coming from adding players to the SC2Env constructor. Basically, that error is thrown because minigames only allow for one player, and you are specificying more than one, I am guessing?

Try fixing the first issue with the line above, and if errors still persist and you wouldnt mind sharing your code, we can go from there.

Thanks.

[lml519]

Thank u very much for ur sincerely help. I change the position of "flags.FLAGS(sys.argv)" to the end of the declaration of all command line flags. Then the game can run. Before the game run correctly, the terminal display "TypeError: Agent(race=[<Race.terran: 1>], name='') has type <class 'pysc2.env.sc2_env.Agent'>, but expected oneof: (<class 'int'>,)".
I think this is the question of agent type. And how can I share my code with u?

thank u.

[lbianculli]

If you wouldnt mind pasting into the prompt the code that's throwing the error, as well as the trace if you can, that would be great. Just use the "insert code" format option at the top of the text box, right next to the quotation marks.

[lml519]

@lbianculli
Sorry for repling lately.I run it on my windows10 os.And the output is that:

pygame 1.9.4
Hello from the pygame community. https://www.pygame.org/contribute.html
pygame 1.9.4
Hello from the pygame community. https://www.pygame.org/contribute.html
pygame 1.9.4
Hello from the pygame community. https://www.pygame.org/contribute.html
pygame 1.9.4
Hello from the pygame community. https://www.pygame.org/contribute.html
Process Process-3:
Process Process-2:
Traceback (most recent call last):
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\multiprocessing\process.py", line 297, in _boots
self.run()
Traceback (most recent call last):
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\multiprocessing\process.py", line 99, in run
self._target(*self.args, **self.kwargs)
File "C:\Users\lml96\Desktop\pysc2-examples\common\vec_env\subproc_vec_env.py", line 28, in worker
step_mul=2) as env:
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\site-packages\pysc2\env\sc2_env.py", line 288, i
it
self._create_join()
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\site-packages\pysc2\env\sc2_env.py", line 421, i
ate_join
join.race = random.choice(p.race)
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\site-packages\google\protobuf\internal\python_me
py", line 674, in setter
field_setter(self, new_value)
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\site-packages\google\protobuf\internal\python_me
py", line 662, in field_setter
new_value = type_checker.CheckValue(new_value)
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\site-packages\google\protobuf\internal\type_chec
y", line 157, in CheckValue
raise TypeError(message)
TypeError: Agent(race=[<Race.terran: 1>], name='') has type <class 'pysc2.env.sc2_env.Agent'>, but expect
of: (<class 'int'>,)
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\multiprocessing\process.py", line 297, in _boots
self.run()
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\multiprocessing\process.py", line 99, in run
self._target(*self._args, **self._kwargs)
Process Process-1:
Process Process-4:
Traceback (most recent call last):
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\multiprocessing\process.py", line 297, in _boots
self.run()
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\multiprocessing\process.py", line 99, in run
self.target(*self.args, **self.kwargs)
File "C:\Users\lml96\Desktop\pysc2-examples\common\vec_env\subproc_vec_env.py", line 28, in worker
step_mul=2) as env:
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\site-packages\pysc2\env\sc2_env.py", line 288, i
it
self.create_join()
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\site-packages\pysc2\env\sc2_env.py", line 421, i
ate_join
join.race = random.choice(p.race)
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\site-packages\google\protobuf\internal\python_me
py", line 674, in setter
field_setter(self, new_value)
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\site-packages\google\protobuf\internal\python_me
py", line 662, in field_setter
new_value = type_checker.CheckValue(new_value)
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\site-packages\google\protobuf\internal\type_chec
y", line 157, in CheckValue
raise TypeError(message)
TypeError: Agent(race=[<Race.terran: 1>], name='') has type <class 'pysc2.env.sc2_env.Agent'>, but expect
of: (<class 'int'>,)
File "C:\Users\lml96\Desktop\pysc2-examples\common\vec_env\subproc_vec_env.py", line 28, in worker
step_mul=2) as env:
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\site-packages\pysc2\env\sc2_env.py", line 288, i
it
self._create_join()
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\site-packages\pysc2\env\sc2_env.py", line 421, i
ate_join
join.race = random.choice(p.race)
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\site-packages\google\protobuf\internal\python_me
py", line 674, in setter
field_setter(self, new_value)
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\site-packages\google\protobuf\internal\python_me
py", line 662, in field_setter
new_value = type_checker.CheckValue(new_value)
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\site-packages\google\protobuf\internal\type_chec
y", line 157, in CheckValue
raise TypeError(message)
TypeError: Agent(race=[<Race.terran: 1>], name='') has type <class 'pysc2.env.sc2_env.Agent'>, but expect
of: (<class 'int'>,)
Traceback (most recent call last):
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\multiprocessing\process.py", line 297, in _boots
self.run()
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\multiprocessing\process.py", line 99, in run
self._target(*self.args, **self.kwargs)
File "C:\Users\lml96\Desktop\pysc2-examples\common\vec_env\subproc_vec_env.py", line 28, in worker
step_mul=2) as env:
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\site-packages\pysc2\env\sc2_env.py", line 288, i
it
self._create_join()
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\site-packages\pysc2\env\sc2_env.py", line 421, i
ate_join
join.race = random.choice(p.race)
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\site-packages\google\protobuf\internal\python_me
py", line 674, in setter
field_setter(self, new_value)
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\site-packages\google\protobuf\internal\python_me
py", line 662, in field_setter
new_value = type_checker.CheckValue(new_value)
File "C:\Users\lml96\AppData\Local\Programs\Python\Python37\lib\site-packages\google\protobuf\internal\type_chec
y", line 157, in CheckValue
raise TypeError(message)
TypeError: Agent(race=[<Race.terran: 1>], name='') has type <class 'pysc2.env.sc2_env.Agent'>, but expect
of: (<class 'int'>,)

[lbianculli]

could you post some of your own code around where this error is being raised? Thanks.