185 Commits

Author SHA1 Message Date
youkaichao
a9f9940d17
code refactor for venv (#179)
- Refacor code to remove duplicate code

- Enable async simulation for all vector envs

- Remove `collector.close` and rename `VectorEnv` to `DummyVectorEnv`

The abstraction of vector env changed.

Prior to this pr, each vector env is almost independent.

After this pr, each env is wrapped into a worker, and vector envs differ with their worker type. In fact, users can just use `BaseVectorEnv` with different workers, I keep `SubprocVectorEnv`, `ShmemVectorEnv` for backward compatibility.

Co-authored-by: n+e <463003665@qq.com>
Co-authored-by: magicly <magicly007@gmail.com>
v0.2.6
2020-08-19 15:00:24 +08:00
n+e
311a2beafb
Pickle compatible for replay buffer and improve buffer.get (#182)
fix #84 and make buffer more efficient
2020-08-16 16:26:23 +08:00
youkaichao
7f3b817b24
add policy.update to enable post process and remove collector.sample (#180)
* add policy.update to enable post process and remove collector.sample

* update doc in policy concept

* remove collector.sample in doc

* doc update of concepts

* docs

* polish

* polish policy

* remove collector.sample in docs

* minor fix

* Apply suggestions from code review

just a test

* doc fix

Co-authored-by: Trinkle23897 <463003665@qq.com>
2020-08-15 16:10:42 +08:00
n+e
140b1c2cab
Improve PER (#159)
- use segment tree to rewrite the previous PrioReplayBuffer code, add the test

- enable all Q-learning algorithms to use PER
2020-08-06 10:26:24 +08:00
Imone
312b7551cc
Add BipedalWalkerHardcore-v3 SAC example (#177) 2020-08-05 10:29:41 +08:00
ChenDRAG
f2bcc55a25
ShmemVectorEnv Implementation (#174)
* add shmem vecenv, some add&fix in test_env

* generalize test_env IO

* pep8 fix

* comment update

* style change

* pep8 fix

* style fix

* minor fix

* fix a bug

* test fix

* change env

* testenv bug fix& shmem support recurse dict

* bugfix

* pep8 fix

* _NP_TO_CT enhance

* doc update

* docstring update

* pep8 fix

* style change

* style fix

* remove assert

* minor

Co-authored-by: Trinkle23897 <463003665@qq.com>
2020-08-04 13:39:05 +08:00
ChenDRAG
996e2f7c9b
Add profile workflow (#143)
* add a workflow to profile batch
* buffer profiling
* collector profiling

Co-authored-by: Trinkle23897 <463003665@qq.com>
Co-authored-by: Huayu Chen(陈华玉) <chenhuay17@gamil.com>
2020-08-02 18:24:40 +08:00
youkaichao
32df0567bb
use nn.Sequential in DQN (#176) 2020-08-02 15:14:44 +08:00
yingchengyang
99a1d40e85
Dueling DQN (#170)
Co-authored-by: n+e <463003665@qq.com>
2020-07-29 19:44:42 +08:00
youkaichao
ad395b5235
bugfix for test_async_env (#171) 2020-07-28 20:06:01 +08:00
Trinkle23897
b7a4015db7 doc update and do not force save 'policy' in np format (#168) 2020-07-27 16:54:14 +08:00
Alexis DUBURCQ
e024afab8c
Asynchronous sampling vector environment (#134)
Fix #103

Co-authored-by: youkaichao <youkaichao@126.com>
Co-authored-by: Trinkle23897 <463003665@qq.com>
2020-07-26 18:01:21 +08:00
Alexis DUBURCQ
30368c29a6
Replay buffer allows stack_num = 1 (#165)
* stack_num starts at 1 (for no stacking) instead of 0.

* Use getter/stepper for stack_num.

Co-authored-by: Alexis Duburcq <alexis.duburcq@wandercraft.eu>
2020-07-25 19:33:44 +08:00
n+e
38a95c19da
Yet another 3 fix (#160)
1. DQN learn should keep eps=0

2. Add a warning of env.seed in VecEnv

3. fix #162 of multi-dim action
2020-07-24 17:38:12 +08:00
youkaichao
bfeffe1f97
unify single-env and multi-env in collector (#157)
Unify the implementation with multi-environments (wrap a single environment in a multi-environment with one envs) to greatly simplify the code.

This changed the behavior of single-environment.
Prior to this pr, for single environment, collector.collect(n_step=n) will step n steps.
After this pr, for single environment, collector.collect(n_step=n) will step m episodes until the steps are greater than n.

That is to say, collectors now always collect full episodes.
2020-07-23 16:40:53 +08:00
n+e
352a518399
3 fix (#158)
- fix 2 warning in doctest
- change the minimum version of gym (to be aligned with openai baselines)
- change squeeze and reshape to flatten (related to #155). I think flatten is better.
2020-07-23 15:12:02 +08:00
n+e
bd9c3c7f8d
docs fix and v0.2.5 (#156)
* pre

* update docs

* update docs

* $ in bash

* size -> hidden_layer_size

* doctest

* doctest again

* filter a warning

* fix bug

* fix examples

* test fail

* test succ
v0.2.5
2020-07-22 14:42:08 +08:00
n+e
089b85b6a2
Fix shape inconsistency in A2CPolicy and PPOPolicy (#155)
- The original `r - v`'s shape in A2C is wrong.

- The shape of log_prob is different: [bsz] in Categorical and [bsz, 1] in Normal. Should manually make the shape to be consistent with other tensors.
2020-07-21 22:24:06 +08:00
Alexis DUBURCQ
865ef6c693
Improve to_torch/to_numpy converters (#147)
* Enable converting list/tuple back and forth from/to numpy/torch.

* Add fallbacks.

* Fix PEP8

* Update unit tests.

* Type annotation. Robust dtype check.

* List of object are converted individually, as a single tensor otherwise.

* Improve robustness of _to_array_with_correct_type

* Add unit tests.

* Do not catch exception at _to_array_with_correct_type level.

* Use _parse_value

* Fix PEP8

* Fix _parse_value list output type fallback.

* Catch torch exception.

* Do not convert torch tensor during fallback.

* Improve unit tests.

* Add unit tests.

* FIx missing import

* Remove support of numpy arrays of tensors for Batch value parser.

* Forbid numpy arrays of tensors.

* Fix PEP8.

* Fix comment.

* Reduce _parse_value branch number.

* Fix None value.

* Forward error message for debugging purpose.

* Fix _is_scalar.

* More specific try/catch blocks.

* Fix exception chaining.

* Fix PEP8.

* Fix _is_scalar.

* Fix missing corner case.

* Fix PEP8.

* Allow Batch empty key.

* Fix multi-dim array datatype check.

Co-authored-by: Alexis Duburcq <alexis.duburcq@wandercraft.eu>
2020-07-21 16:47:56 +08:00
youkaichao
8c32d99c65
Add multi-agent example: tic-tac-toe (#122)
* make fileds with empty Batch rather than None after reset

* dummy code

* remove dummy

* add reward_length argument for collector

* Improve Batch (#126)

* make sure the key type of Batch is string, and add unit tests

* add is_empty() function and unit tests

* enable cat of mixing dict and Batch, just like stack

* bugfix for reward_length

* add get_final_reward_fn argument to collector to deal with marl

* minor polish

* remove multibuf

* minor polish

* improve and implement Batch.cat_

* bugfix for buffer.sample with field impt_weight

* restore the usage of a.cat_(b)

* fix 2 bugs in batch and add corresponding unittest

* code fix for update

* update is_empty to recognize empty over empty; bugfix for len

* bugfix for update and add testcase

* add testcase of update

* make fileds with empty Batch rather than None after reset

* dummy code

* remove dummy

* add reward_length argument for collector

* bugfix for reward_length

* add get_final_reward_fn argument to collector to deal with marl

* make sure the key type of Batch is string, and add unit tests

* add is_empty() function and unit tests

* enable cat of mixing dict and Batch, just like stack

* dummy code

* remove dummy

* add multi-agent example: tic-tac-toe

* move TicTacToeEnv to a separate file

* remove dummy MANet

* code refactor

* move tic-tac-toe example to test

* update doc with marl-example

* fix docs

* reduce the threshold

* revert

* update player id to start from 1 and change player to agent; keep coding

* add reward_length argument for collector

* Improve Batch (#128)

* minor polish

* improve and implement Batch.cat_

* bugfix for buffer.sample with field impt_weight

* restore the usage of a.cat_(b)

* fix 2 bugs in batch and add corresponding unittest

* code fix for update

* update is_empty to recognize empty over empty; bugfix for len

* bugfix for update and add testcase

* add testcase of update

* fix docs

* fix docs

* fix docs [ci skip]

* fix docs [ci skip]

Co-authored-by: Trinkle23897 <463003665@qq.com>

* refact

* re-implement Batch.stack and add testcases

* add doc for Batch.stack

* reward_metric

* modify flag

* minor fix

* reuse _create_values and refactor stack_ & cat_

* fix pep8

* fix reward stat in collector

* fix stat of collector, simplify test/base/env.py

* fix docs

* minor fix

* raise exception for stacking with partial keys and axis!=0

* minor fix

* minor fix

* minor fix

* marl-examples

* add condense; bugfix for torch.Tensor; code refactor

* marl example can run now

* enable tic tac toe with larger board size and win-size

* add test dependency

* Fix padding of inconsistent keys with Batch.stack and Batch.cat (#130)

* re-implement Batch.stack and add testcases

* add doc for Batch.stack

* reuse _create_values and refactor stack_ & cat_

* fix pep8

* fix docs

* raise exception for stacking with partial keys and axis!=0

* minor fix

* minor fix

Co-authored-by: Trinkle23897 <463003665@qq.com>

* stash

* let agent learn to play as agent 2 which is harder

* code refactor

* Improve collector (#125)

* remove multibuf

* reward_metric

* make fileds with empty Batch rather than None after reset

* many fixes and refactor
Co-authored-by: Trinkle23897 <463003665@qq.com>

* marl for tic-tac-toe and general gomoku

* update default gamma to 0.1 for tic tac toe to win earlier

* fix name typo; change default game config; add rew_norm option

* fix pep8

* test commit

* mv test dir name

* add rew flag

* fix torch.optim import error and madqn rew_norm

* remove useless kwargs

* Vector env enable select worker (#132)

* Enable selecting worker for vector env step method.

* Update collector to match new vecenv selective worker behavior.

* Bug fix.

* Fix rebase

Co-authored-by: Alexis Duburcq <alexis.duburcq@wandercraft.eu>

* show the last move of tictactoe by capital letters

* add multi-agent tutorial

* fix link

* Standardized behavior of Batch.cat and misc code refactor (#137)

* code refactor; remove unused kwargs; add reward_normalization for dqn

* bugfix for __setitem__ with torch.Tensor; add Batch.condense

* minor fix

* support cat with empty Batch

* remove the dependency of is_empty on len; specify the semantic of empty Batch by test cases

* support stack with empty Batch

* remove condense

* refactor code to reflect the shared / partial / reserved categories of keys

* add is_empty(recursive=False)

* doc fix

* docfix and bugfix for _is_batch_set

* add doc for key reservation

* bugfix for algebra operators

* fix cat with lens hint

* code refactor

* bugfix for storing None

* use ValueError instead of exception

* hide lens away from users

* add comment for __cat

* move the computation of the initial value of lens in cat_ itself.

* change the place of doc string

* doc fix for Batch doc string

* change recursive to recurse

* doc string fix

* minor fix for batch doc

* write tutorials to specify the standard of Batch (#142)

* add doc for len exceptions

* doc move; unify is_scalar_value function

* remove some issubclass check

* bugfix for shape of Batch(a=1)

* keep moving doc

* keep writing batch tutorial

* draft version of Batch tutorial done

* improving doc

* keep improving doc

* batch tutorial done

* rename _is_number

* rename _is_scalar

* shape property do not raise exception

* restore some doc string

* grammarly [ci skip]

* grammarly + fix warning of building docs

* polish docs

* trim and re-arrange batch tutorial

* go straight to the point

* minor fix for batch doc

* add shape / len in basic usage

* keep improving tutorial

* unify _to_array_with_correct_type to remove duplicate code

* delegate type convertion to Batch.__init__

* further delegate type convertion to Batch.__init__

* bugfix for setattr

* add a _parse_value function

* remove dummy function call

* polish docs

Co-authored-by: Trinkle23897 <463003665@qq.com>

* bugfix for mapolicy

* pretty code

* remove debug code; remove condense

* doc fix

* check before get_agents in tutorials/tictactoe

* tutorial

* fix

* minor fix for batch doc

* minor polish

* faster test_ttt

* improve tic-tac-toe environment

* change default epoch and step-per-epoch for tic-tac-toe

* fix mapolicy

* minor polish for mapolicy

* 90% to 80% (need to change the tutorial)

* win rate

* show step number at board

* simplify mapolicy

* minor polish for mapolicy

* remove MADQN

* fix pep8

* change legal_actions to mask (need to update docs)

* simplify maenv

* fix typo

* move basevecenv to single file

* separate RandomAgent

* update docs

* grammarly

* fix pep8

* win rate typo

* format in cheatsheet

* use bool mask directly

* update doc for boolean mask

Co-authored-by: Trinkle23897 <463003665@qq.com>
Co-authored-by: Alexis DUBURCQ <alexis.duburcq@gmail.com>
Co-authored-by: Alexis Duburcq <alexis.duburcq@wandercraft.eu>
2020-07-21 14:59:49 +08:00
ChenDRAG
d09b69e594
buffer update bug fix (#154)
* buffer update bug fix

* some fix in buffer update

* polish

Co-authored-by: n+e <463003665@qq.com>
2020-07-20 22:12:57 +08:00
youkaichao
fe5555d2a1 write tutorials to specify the standard of Batch (#142)
* add doc for len exceptions

* doc move; unify is_scalar_value function

* remove some issubclass check

* bugfix for shape of Batch(a=1)

* keep moving doc

* keep writing batch tutorial

* draft version of Batch tutorial done

* improving doc

* keep improving doc

* batch tutorial done

* rename _is_number

* rename _is_scalar

* shape property do not raise exception

* restore some doc string

* grammarly [ci skip]

* grammarly + fix warning of building docs

* polish docs

* trim and re-arrange batch tutorial

* go straight to the point

* minor fix for batch doc

* add shape / len in basic usage

* keep improving tutorial

* unify _to_array_with_correct_type to remove duplicate code

* delegate type convertion to Batch.__init__

* further delegate type convertion to Batch.__init__

* bugfix for setattr

* add a _parse_value function

* remove dummy function call

* polish docs

Co-authored-by: Trinkle23897 <463003665@qq.com>
2020-07-20 15:54:18 +08:00
youkaichao
3a08e27ed4 Standardized behavior of Batch.cat and misc code refactor (#137)
* code refactor; remove unused kwargs; add reward_normalization for dqn

* bugfix for __setitem__ with torch.Tensor; add Batch.condense

* minor fix

* support cat with empty Batch

* remove the dependency of is_empty on len; specify the semantic of empty Batch by test cases

* support stack with empty Batch

* remove condense

* refactor code to reflect the shared / partial / reserved categories of keys

* add is_empty(recursive=False)

* doc fix

* docfix and bugfix for _is_batch_set

* add doc for key reservation

* bugfix for algebra operators

* fix cat with lens hint

* code refactor

* bugfix for storing None

* use ValueError instead of exception

* hide lens away from users

* add comment for __cat

* move the computation of the initial value of lens in cat_ itself.

* change the place of doc string

* doc fix for Batch doc string

* change recursive to recurse

* doc string fix

* minor fix for batch doc
2020-07-20 15:54:18 +08:00
Alexis DUBURCQ
09e10e384f Vector env enable select worker (#132)
* Enable selecting worker for vector env step method.

* Update collector to match new vecenv selective worker behavior.

* Bug fix.

* Fix rebase

Co-authored-by: Alexis Duburcq <alexis.duburcq@wandercraft.eu>
2020-07-20 15:54:18 +08:00
youkaichao
26fb87433d Improve collector (#125)
* remove multibuf

* reward_metric

* make fileds with empty Batch rather than None after reset

* many fixes and refactor
Co-authored-by: Trinkle23897 <463003665@qq.com>
v0.2.4.post1
2020-07-13 17:33:01 +08:00
youkaichao
5599a6d1a6 Fix padding of inconsistent keys with Batch.stack and Batch.cat (#130)
* re-implement Batch.stack and add testcases

* add doc for Batch.stack

* reuse _create_values and refactor stack_ & cat_

* fix pep8

* fix docs

* raise exception for stacking with partial keys and axis!=0

* minor fix

* minor fix

Co-authored-by: Trinkle23897 <463003665@qq.com>
2020-07-13 17:33:01 +08:00
youkaichao
affeec13de Improve Batch (#128)
* minor polish

* improve and implement Batch.cat_

* bugfix for buffer.sample with field impt_weight

* restore the usage of a.cat_(b)

* fix 2 bugs in batch and add corresponding unittest

* code fix for update

* update is_empty to recognize empty over empty; bugfix for len

* bugfix for update and add testcase

* add testcase of update

* fix docs

* fix docs

* fix docs [ci skip]

* fix docs [ci skip]

Co-authored-by: Trinkle23897 <463003665@qq.com>
2020-07-13 17:33:01 +08:00
youkaichao
2564e989fb Improve Batch (#126)
* make sure the key type of Batch is string, and add unit tests

* add is_empty() function and unit tests

* enable cat of mixing dict and Batch, just like stack
2020-07-13 17:33:01 +08:00
n+e
47e8e2686c
move atari wrapper to examples and publish v0.2.4 (#124)
* move atari wrapper to examples

* consistency

* change drqn seed since it is quite unstable in current seed

* minor fix

* 0.2.4
v0.2.4
2020-07-10 17:20:39 +08:00
youkaichao
ff99662fe6
bugfix for update with empty buffer; remove duplicate variable _weight_sum in PrioritizedReplayBuffer (#120)
* bugfix for update with empty buffer; remove duplicate variable _weight_sum in PrioritizedReplayBuffer

* point out that ListReplayBuffer cannot be sampled

* remove useless _amortization_counter variable
2020-07-10 08:24:11 +08:00
youkaichao
e767de044b
Remove dummy net code (#123)
* remove dummy net; delete two files

* split code to have backbone and head

* rename class

* change torch.float to torch.float32

* use flatten(1) instead of view(batch, -1)

* remove dummy net in docs

* bugfix for rnn

* fix cuda error

* minor fix of docs

* do not change the example code in dqn tutorial, since it is for demonstration

Co-authored-by: Trinkle23897 <463003665@qq.com>
2020-07-09 22:57:01 +08:00
Alexis DUBURCQ
aa3c453f42
Raise exception for Batch __getitem__. (#119)
* Raise exception for Batch __getitem__.

* Try fixing access to reserved key.

* Simpler patch.

* Add unit test to check indexing empty Batch raises an exception.

Co-authored-by: Alexis Duburcq <alexis.duburcq@wandercraft.eu>
2020-07-08 22:29:37 +08:00
youkaichao
7f9a1f1328
add type check for each element rather than the first element (#112)
This PR does the following:
- improvement: dramatic reduce of the call to _is_batch_set
- bugfix: list(Batch()) fail; Batch(a=[torch.ones(3), torch.ones(3)]) fail;
- misc: add type check for each element rather than the first element; add test case; _create_value with torch.Tensor does not have np.object type;
2020-07-08 21:00:00 +08:00
youkaichao
481015932c
bugfix for hang in list(Batch()) (#117) 2020-07-08 17:09:27 +08:00
youkaichao
f5e007932f
fix Batch init for types other than number and bool (#115)
* fix Batch init for types other than number and bool

* change doc to involve bool type

* use type check

* Batch type check complete
2020-07-08 13:45:29 +08:00
youkaichao
dbbb859ec5
doc fix (#113)
* doc fix

* change line

Co-authored-by: Trinkle23897 <463003665@qq.com>
2020-07-08 08:30:01 +08:00
youkaichao
9c7d31e5d6
bugfix for empty_ (#114)
* bugfix for empty_

* use v.__class__(0) for scalar
2020-07-08 08:10:34 +08:00
Alexis DUBURCQ
69caf89908
Fix to_torch converters (#111)
* Fix to_torch converters.

* to_torch now convert any object Torch Tensor-compatible.

* Fix linter.

* Fix Batch to_torch to convert any Torch Tensor-compatible data.

Co-authored-by: Alexis Duburcq <alexis.duburcq@wandercraft.eu>
2020-07-07 18:40:55 +08:00
youkaichao
8913bf36b1
change Batch.empty to in-place fill; add copy option for Batch construction (#110)
* in-place empty_ for Batch

* change Batch.empty to in-place fill; add copy option for Batch construction

* type signiture & remove shadow names for copy

* add doc for data type (only support numbers and object data type)

* add unit test for Batch copy

* fix pep8

* add test case for Batch.empty

* doc fix

* fix pep8

* use object to test Batch

* test commit

* refact

* change Batch(copy) testcase

* minor fix

Co-authored-by: Trinkle23897 <463003665@qq.com>
2020-07-06 20:30:15 +08:00
youkaichao
5b1373924e
doc fix; policy train/eval signiture fix (#109)
* doc fix; policy train/eval signiture fix

* change train/eval behavior according to pytorch

* change train/eval behavior according to pytorch
2020-07-06 10:44:34 +08:00
n+e
db0e2e5cd2
Advanced Batch slicing & minor fix of RNN support (#106)
* add shape property and modify __getitem__

* change Batch.size to Batch.shape

* setattr

* Batch.empty

* remove scalar in advanced slicing

* modify empty_ and __getitem__

* missing testcase

* fix empty
2020-06-30 18:02:44 +08:00
Trinkle23897
c639446c66 add copybutton 2020-06-29 13:45:01 +08:00
Trinkle23897
e0f4862d01 store RNN hidden states in policy._state and add sample_avail in buffer (#19) 2020-06-29 12:18:52 +08:00
danagi
60cfc373f8
fix #98, support #99 (#102)
* Add auto alpha tuning and exploration noise for sac.
Add class BaseNoise and GaussianNoise for the concept of exploration noise.
Add new test for sac tested in MountainCarContinuous-v0,
which should benefits from the two above new feature.

* add exploration noise to collector, fix example to adapt modification

* fix #98

* enable off-policy to update multiple times in one step. (#99)
2020-06-27 21:40:09 +08:00
Alexis DUBURCQ
a951a32487
Enable partial stacking at Batch level (#100)
* Enable stacking of partially matching Batch instances.

* Fix list support for getitem.

* Fix Batch 'size' method.

* Update Batch documentation.
2020-06-27 09:06:40 +08:00
Alexis DUBURCQ
70aa7bf93e
Use lower-level API to reduce overhead. (#97)
* Use lower-level API to reduce overhead.

* Further improvements.

* Buffer _add_to_buffer improvement.

* Do not use _data field to store Batch data to avoid overhead. Add back _meta field in Buffer.

* Restore metadata attribute to store batch in Buffer.

* Move out nested methods.

* Update try/catch instead of actual check to efficiency.

* Remove unsed branches for efficiency.

* Use np.array over list when possible for efficiency.

* Final performance improvement.

* Add unit tests for Batch size method.

* Add missing stack unit tests.

* Enforce Buffer initialization to zero.

Co-authored-by: Alexis Duburcq <alexis.duburcq@wandercraft.eu>
2020-06-26 18:37:50 +08:00
Alexis DUBURCQ
5ac9f9b144
Do not check bounds since it is always valid when everything is fine. (#95) 2020-06-25 21:06:35 +08:00
Alexis DUBURCQ
3086b5c31d
Buffer refactoring to support batch over batch reliably (#93)
* Fix support of batch over batch for Buffer.

* Do not use internal __dict__ attribute to store batch data since it breaks inheritance.

* Various fixes.

* Improve robustness of Batch/Buffer by avoiding direct attribute assignment. Buffer refactoring.

* Add axis optional argument to Batch stack method.

* Add item assignment to Batch class.

* Fix list support for Buffer.

* Convert list to np.array by default for efficiency.

* Add missing unit test for Batch. Fix unit tests.

* Batch item assignment is now robust to key order.

* Do not use getattr/setattr explicity for simplicity.

* More flexible __setitem__.

* Fixes

* Remove broacasting at Batch level since it is unreliable.

* Forbid item assignement for inconsistent batches.

* Implement broadcasting at Buffer level.

* Add more unit test for Batch item assignment.

Co-authored-by: Alexis Duburcq <alexis.duburcq@wandercraft.eu>
2020-06-25 20:39:30 +08:00
rocknamx
506cc97ba5
fix #91 (#94) 2020-06-25 07:02:59 +08:00
Alexis DUBURCQ
49f43e9f1f
Fix Batch to numpy compatibility (#92)
* Fix Batch to numpy compatibility.

* Fix Batch unit tests.

* Fix linter

* Add Batch shape method.

* Remove shape and add size. Enable to reserve keys using empty batch/list.

* Fix linter and unit tests.

* Batch init using list of Batch.

* Add unit tests.

* Fix Batch __len__.

* Fix unit tests.

* Fix slicing

* Add missing slicing unit tests.

Co-authored-by: Alexis Duburcq <alexis.duburcq@wandercraft.eu>
2020-06-24 21:43:48 +08:00