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remove reraise logic (#1342)

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* remove reraise logic - replace with re-raising import errors in the only place it is used

* remove reraise

* remove reset call from MountainCar constructor

* further remove reraise

* remove reraise import in classic_control/rendering.py
This commit is contained in:
pzhokhov
2019-03-07 15:58:26 -08:00
committed by GitHub
parent 89dee9c7a3
commit d11196a896
7 changed files with 12 additions and 53 deletions
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15
gym/envs/classic_control/rendering.py
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@@ -11,18 +11,27 @@ if "Apple" in sys.version:
os.environ['DYLD_FALLBACK_LIBRARY_PATH'] += ':/usr/lib'
# (JDS 2016/04/15): avoid bug on Anaconda 2.3.0 / Yosemite
from gym.utils import reraise
from gym import error
try:
import pyglet
except ImportError as e:
reraise(suffix="HINT: you can install pyglet directly via 'pip install pyglet'. But if you really just want to install all Gym dependencies and not have to think about it, 'pip install -e .[all]' or 'pip install gym[all]' will do it.")
raise ImportError('''
Cannot import pyglet.
HINT: you can install pyglet directly via 'pip install pyglet'.
But if you really just want to install all Gym dependencies and not have to think about it,
'pip install -e .[all]' or 'pip install gym[all]' will do it.
''')
try:
from pyglet.gl import *
except ImportError as e:
reraise(prefix="Error occured while running `from pyglet.gl import *`",suffix="HINT: make sure you have OpenGL install. On Ubuntu, you can run 'apt-get install python-opengl'. If you're running on a server, you may need a virtual frame buffer; something like this should work: 'xvfb-run -s \"-screen 0 1400x900x24\" python <your_script.py>'")
raise ImportError('''
Error occured while running `from pyglet.gl import *`
HINT: make sure you have OpenGL install. On Ubuntu, you can run 'apt-get install python-opengl'.
If you're running on a server, you may need a virtual frame buffer; something like this should work:
'xvfb-run -s \"-screen 0 1400x900x24\" python <your_script.py>'
''')
import math
import numpy as np