fix warnings fired from PyCall

src/Gym.jl

@@ -16,7 +16,7 @@ include("env.jl")
 Shows available environments
 """
 function show_available_envs()
-    println(map(x->x[:id], gym.envs[:registry][:all]()))
+    println(map(x->x.id, gym.envs.registry.all()))
 end
 
 export GymEnv, reset!, step!, render, close, seed!

src/env.jl

@@ -13,37 +13,37 @@ end
 function GymEnv(id::String)
     gymenv = nothing
     try
-        gymenv = gym[:make](id)
+        gymenv = gym.make(id)
     catch e
         error("Error received during the initialization of $id\n$e")
     end
 
-    spec = Spec(gymenv[:spec][:id],
-                gymenv[:spec][:trials],
-                gymenv[:spec][:reward_threshold],
-                gymenv[:spec][:nondeterministic],
-                gymenv[:spec][:tags],
-                gymenv[:spec][:max_episode_steps],
-                gymenv[:spec][:timestep_limit]
+    spec = Spec(gymenv.spec.id,
+                gymenv.spec.trials,
+                gymenv.spec.reward_threshold,
+                gymenv.spec.nondeterministic,
+                gymenv.spec.tags,
+                gymenv.spec.max_episode_steps,
+                gymenv.spec.timestep_limit
                )
-    action_space = julia_space(gymenv[:action_space])
-    observation_space = julia_space(gymenv[:observation_space])
+    action_space = julia_space(gymenv.action_space)
+    observation_space = julia_space(gymenv.observation_space)
 
     env = GymEnv(id, spec, action_space,
-                 observation_space, gymenv[:reward_range], gymenv)
+                 observation_space, gymenv.reward_range, gymenv)
     return env
 end
 
-reset!(env::GymEnv) = env.gymenv[:reset]()
+reset!(env::GymEnv) = env.gymenv.reset()
 function render(env::GymEnv; mode="human")
-    env.gymenv[:render](mode)
+    env.gymenv.render(mode)
 end
 
 function step!(env::GymEnv, action)
-    ob, reward, done, information = env.gymenv[:step](action)
+    ob, reward, done, information = env.gymenv.step(action)
     return ob, reward, done, information
 end
 
-close!(env::GymEnv) = env.gymenv[:close]()
+close!(env::GymEnv) = env.gymenv.close()
 
-seed!(env::GymEnv, seed=nothing) = env.gymenv[:seed](seed)
+seed!(env::GymEnv, seed=nothing) = env.gymenv.seed(seed)

src/spaces.jl

@@ -35,13 +35,13 @@ end
 sample(s::TupleS) = map(sample, s.spaces)
 
 function julia_space(ps)
-    class_name = ps[:__class__][:__name__]
+    class_name = ps.__class__.__name__
     if class_name == "Discrete"
-        return DiscreteS(ps[:n])
+        return DiscreteS(ps.n)
     elseif class_name == "Box"
-        return BoxS(ps[:low], ps[:high], ps[:shape])
+        return BoxS(ps.low, ps.high, ps.shape)
     elseif class_name == "Tuple"
-        spaces = [julia_space(s) for s in ps[:spaces]]
+        spaces = [julia_space(s) for s in ps.spaces]
         return TupleS((spaces...,))
     else
         error("$class_name has not been supported yet")