prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  arviz-darkgrid not working in example from quickstart
  This command is not being recognized.
  I installed the program from github on Mac OS 10.13 using macports Python3.5 
  
  az.style.use('arviz-darkgrid')
  
  </issue>
  <code>
  [start of setup.py]
  1 import codecs
  2 import shutil
  3 import os
  4 import re
  5 
  6 import setuptools
  7 from setuptools import setup, find_packages
  8 from setuptools.command.install import install
  9 from setuptools.command.develop import develop
  10 
  11 
  12 PROJECT_ROOT = os.path.dirname(os.path.realpath(__file__))
  13 REQUIREMENTS_FILE = os.path.join(PROJECT_ROOT, 'requirements.txt')
  14 README_FILE = os.path.join(PROJECT_ROOT, 'README.md')
  15 VERSION_FILE = os.path.join(PROJECT_ROOT, 'arviz', '__init__.py')
  16 
  17 
  18 # Ensure matplotlib dependencies are available to copy
  19 # styles over
  20 setuptools.dist.Distribution().fetch_build_eggs(['matplotlib>=3.0'])
  21 
  22 def get_requirements():
  23     with codecs.open(REQUIREMENTS_FILE) as buff:
  24         return buff.read().splitlines()
  25 
  26 
  27 def get_long_description():
  28     with codecs.open(README_FILE, 'rt') as buff:
  29         return buff.read()
  30 
  31 
  32 def copy_styles():
  33     from matplotlib import get_configdir
  34     sd = os.path.join(get_configdir(), "stylelib")
  35     source = os.path.dirname(os.path.realpath(__file__))
  36     lsd = os.path.join(source, 'arviz', 'plots', 'styles')
  37     styles = [f for f in os.listdir(lsd)]
  38     if not os.path.isdir(sd):
  39         os.makedirs(sd)
  40     for s in styles:
  41         shutil.copy(os.path.join(lsd, s), os.path.join(sd, s))
  42 
  43 
  44 class DevelopStyles(develop):
  45     def run(self):
  46         copy_styles()
  47         develop.run(self)
  48 
  49 class InstallStyles(install):
  50     def run(self):
  51         copy_styles()
  52         install.run(self)
  53 
  54 def get_version():
  55     lines = open(VERSION_FILE, 'rt').readlines()
  56     version_regex = r"^__version__ = ['\"]([^'\"]*)['\"]"
  57     for line in lines:
  58         mo = re.search(version_regex, line, re.M)
  59         if mo:
  60             return mo.group(1)
  61     raise RuntimeError('Unable to find version in %s.' % (VERSION_FILE,))
  62 
  63 setup(
  64     name='arviz',
  65     version=get_version(),
  66     description='Exploratory analysis of Bayesian models',
  67     author='ArviZ Developers',
  68     url="http://github.com/arviz-devs/arviz",
  69     packages=find_packages(),
  70     install_requires=get_requirements(),
  71     long_description=get_long_description(),
  72     long_description_content_type='text/markdown',
  73     include_package_data=True,
  74     cmdclass={
  75         'develop': DevelopStyles,
  76         'install': InstallStyles,
  77     },
  78 )
  79
  [end of setup.py]
  [start of arviz/__init__.py]
  1 # pylint: disable=wildcard-import,invalid-name,wrong-import-position
  2 """ArviZ is a library for exploratory analysis of Bayesian models."""
  3 __version__ = "0.2.1"
  4 
  5 import logging
  6 from matplotlib.pyplot import style
  7 
  8 # Configure logging before importing arviz internals
  9 _log = logging.getLogger("arviz")
  10 
  11 if not logging.root.handlers:
  12     handler = logging.StreamHandler()
  13     _log.setLevel(logging.INFO)
  14     _log.addHandler(handler)
  15 
  16 from .data import *
  17 from .plots import *
  18 from .stats import *
  19
  [end of arviz/__init__.py]
  </code>
  
  I need you to solve this issue by generating a single patch file that I can apply directly to this repository using git apply. Please respond with a single patch file in the following format.
  <patch>
  diff --git a/file.py b/file.py
  --- a/file.py
  +++ b/file.py
  @@ -1,27 +1,35 @@
   def euclidean(a, b):
  -    while b:
  -        a, b = b, a % b
  -    return a
  +    if b == 0:
  +        return a
  +    return euclidean(b, a % b)
   
   
   def bresenham(x0, y0, x1, y1):
       points = []
       dx = abs(x1 - x0)
       dy = abs(y1 - y0)
  -    sx = 1 if x0 < x1 else -1
  -    sy = 1 if y0 < y1 else -1
  -    err = dx - dy
  +    x, y = x0, y0
  +    sx = -1 if x0 > x1 else 1
  +    sy = -1 if y0 > y1 else 1
   
  -    while True:
  -        points.append((x0, y0))
  -        if x0 == x1 and y0 == y1:
  -            break
  -        e2 = 2 * err
  -        if e2 > -dy:
  -            err -= dy
  -            x0 += sx
  -        if e2 < dx:
  -            err += dx
  -            y0 += sy
  +    if dx > dy:
  +        err = dx / 2.0
  +        while x != x1:
  +            points.append((x, y))
  +            err -= dy
  +            if err < 0:
  +                y += sy
  +                err += dx
  +            x += sx
  +    else:
  +        err = dy / 2.0
  +        while y != y1:
  +            points.append((x, y))
  +            err -= dx
  +            if err < 0:
  +                x += sx
  +                err += dy
  +            y += sy
  +
  +    points.append((x, y))
       return points
  
  </patch>
golden_diff: diff --git a/arviz/__init__.py b/arviz/__init__.py
  --- a/arviz/__init__.py
  +++ b/arviz/__init__.py
  @@ -2,9 +2,15 @@
   """ArviZ is a library for exploratory analysis of Bayesian models."""
   __version__ = "0.2.1"
   
  +import os
   import logging
   from matplotlib.pyplot import style
   
  +# add ArviZ's styles to matplotlib's styles
  +arviz_style_path = os.path.join(os.path.dirname(__file__), "plots", "styles")
  +style.core.USER_LIBRARY_PATHS.append(arviz_style_path)
  +style.core.reload_library()
  +
   # Configure logging before importing arviz internals
   _log = logging.getLogger("arviz")
   
  diff --git a/setup.py b/setup.py
  --- a/setup.py
  +++ b/setup.py
  @@ -1,5 +1,4 @@
   import codecs
  -import shutil
   import os
   import re
   
  @@ -15,10 +14,6 @@
   VERSION_FILE = os.path.join(PROJECT_ROOT, 'arviz', '__init__.py')
   
   
  -# Ensure matplotlib dependencies are available to copy
  -# styles over
  -setuptools.dist.Distribution().fetch_build_eggs(['matplotlib>=3.0'])
  -
   def get_requirements():
       with codecs.open(REQUIREMENTS_FILE) as buff:
           return buff.read().splitlines()
  @@ -28,29 +23,6 @@
       with codecs.open(README_FILE, 'rt') as buff:
           return buff.read()
   
  -
  -def copy_styles():
  -    from matplotlib import get_configdir
  -    sd = os.path.join(get_configdir(), "stylelib")
  -    source = os.path.dirname(os.path.realpath(__file__))
  -    lsd = os.path.join(source, 'arviz', 'plots', 'styles')
  -    styles = [f for f in os.listdir(lsd)]
  -    if not os.path.isdir(sd):
  -        os.makedirs(sd)
  -    for s in styles:
  -        shutil.copy(os.path.join(lsd, s), os.path.join(sd, s))
  -
  -
  -class DevelopStyles(develop):
  -    def run(self):
  -        copy_styles()
  -        develop.run(self)
  -
  -class InstallStyles(install):
  -    def run(self):
  -        copy_styles()
  -        install.run(self)
  -
   def get_version():
       lines = open(VERSION_FILE, 'rt').readlines()
       version_regex = r"^__version__ = ['\"]([^'\"]*)['\"]"
  @@ -71,8 +43,4 @@
       long_description=get_long_description(),
       long_description_content_type='text/markdown',
       include_package_data=True,
  -    cmdclass={
  -        'develop': DevelopStyles,
  -        'install': InstallStyles,
  -    },
   )
  
verification_info: {"golden_diff": "diff --git a/arviz/__init__.py b/arviz/__init__.py\n--- a/arviz/__init__.py\n+++ b/arviz/__init__.py\n@@ -2,9 +2,15 @@\n \"\"\"ArviZ is a library for exploratory analysis of Bayesian models.\"\"\"\n __version__ = \"0.2.1\"\n \n+import os\n import logging\n from matplotlib.pyplot import style\n \n+# add ArviZ's styles to matplotlib's styles\n+arviz_style_path = os.path.join(os.path.dirname(__file__), \"plots\", \"styles\")\n+style.core.USER_LIBRARY_PATHS.append(arviz_style_path)\n+style.core.reload_library()\n+\n # Configure logging before importing arviz internals\n _log = logging.getLogger(\"arviz\")\n \ndiff --git a/setup.py b/setup.py\n--- a/setup.py\n+++ b/setup.py\n@@ -1,5 +1,4 @@\n import codecs\n-import shutil\n import os\n import re\n \n@@ -15,10 +14,6 @@\n VERSION_FILE = os.path.join(PROJECT_ROOT, 'arviz', '__init__.py')\n \n \n-# Ensure matplotlib dependencies are available to copy\n-# styles over\n-setuptools.dist.Distribution().fetch_build_eggs(['matplotlib>=3.0'])\n-\n def get_requirements():\n     with codecs.open(REQUIREMENTS_FILE) as buff:\n         return buff.read().splitlines()\n@@ -28,29 +23,6 @@\n     with codecs.open(README_FILE, 'rt') as buff:\n         return buff.read()\n \n-\n-def copy_styles():\n-    from matplotlib import get_configdir\n-    sd = os.path.join(get_configdir(), \"stylelib\")\n-    source = os.path.dirname(os.path.realpath(__file__))\n-    lsd = os.path.join(source, 'arviz', 'plots', 'styles')\n-    styles = [f for f in os.listdir(lsd)]\n-    if not os.path.isdir(sd):\n-        os.makedirs(sd)\n-    for s in styles:\n-        shutil.copy(os.path.join(lsd, s), os.path.join(sd, s))\n-\n-\n-class DevelopStyles(develop):\n-    def run(self):\n-        copy_styles()\n-        develop.run(self)\n-\n-class InstallStyles(install):\n-    def run(self):\n-        copy_styles()\n-        install.run(self)\n-\n def get_version():\n     lines = open(VERSION_FILE, 'rt').readlines()\n     version_regex = r\"^__version__ = ['\\\"]([^'\\\"]*)['\\\"]\"\n@@ -71,8 +43,4 @@\n     long_description=get_long_description(),\n     long_description_content_type='text/markdown',\n     include_package_data=True,\n-    cmdclass={\n-        'develop': DevelopStyles,\n-        'install': InstallStyles,\n-    },\n )\n", "issue": "arviz-darkgrid not working in example from quickstart\nThis command is not being recognized.\r\nI installed the program from github on Mac OS 10.13 using macports Python3.5 \r\n\r\naz.style.use('arviz-darkgrid')\n", "before_files": [{"content": "import codecs\nimport shutil\nimport os\nimport re\n\nimport setuptools\nfrom setuptools import setup, find_packages\nfrom setuptools.command.install import install\nfrom setuptools.command.develop import develop\n\n\nPROJECT_ROOT = os.path.dirname(os.path.realpath(__file__))\nREQUIREMENTS_FILE = os.path.join(PROJECT_ROOT, 'requirements.txt')\nREADME_FILE = os.path.join(PROJECT_ROOT, 'README.md')\nVERSION_FILE = os.path.join(PROJECT_ROOT, 'arviz', '__init__.py')\n\n\n# Ensure matplotlib dependencies are available to copy\n# styles over\nsetuptools.dist.Distribution().fetch_build_eggs(['matplotlib>=3.0'])\n\ndef get_requirements():\n    with codecs.open(REQUIREMENTS_FILE) as buff:\n        return buff.read().splitlines()\n\n\ndef get_long_description():\n    with codecs.open(README_FILE, 'rt') as buff:\n        return buff.read()\n\n\ndef copy_styles():\n    from matplotlib import get_configdir\n    sd = os.path.join(get_configdir(), \"stylelib\")\n    source = os.path.dirname(os.path.realpath(__file__))\n    lsd = os.path.join(source, 'arviz', 'plots', 'styles')\n    styles = [f for f in os.listdir(lsd)]\n    if not os.path.isdir(sd):\n        os.makedirs(sd)\n    for s in styles:\n        shutil.copy(os.path.join(lsd, s), os.path.join(sd, s))\n\n\nclass DevelopStyles(develop):\n    def run(self):\n        copy_styles()\n        develop.run(self)\n\nclass InstallStyles(install):\n    def run(self):\n        copy_styles()\n        install.run(self)\n\ndef get_version():\n    lines = open(VERSION_FILE, 'rt').readlines()\n    version_regex = r\"^__version__ = ['\\\"]([^'\\\"]*)['\\\"]\"\n    for line in lines:\n        mo = re.search(version_regex, line, re.M)\n        if mo:\n            return mo.group(1)\n    raise RuntimeError('Unable to find version in %s.' % (VERSION_FILE,))\n\nsetup(\n    name='arviz',\n    version=get_version(),\n    description='Exploratory analysis of Bayesian models',\n    author='ArviZ Developers',\n    url=\"http://github.com/arviz-devs/arviz\",\n    packages=find_packages(),\n    install_requires=get_requirements(),\n    long_description=get_long_description(),\n    long_description_content_type='text/markdown',\n    include_package_data=True,\n    cmdclass={\n        'develop': DevelopStyles,\n        'install': InstallStyles,\n    },\n)\n", "path": "setup.py"}, {"content": "# pylint: disable=wildcard-import,invalid-name,wrong-import-position\n\"\"\"ArviZ is a library for exploratory analysis of Bayesian models.\"\"\"\n__version__ = \"0.2.1\"\n\nimport logging\nfrom matplotlib.pyplot import style\n\n# Configure logging before importing arviz internals\n_log = logging.getLogger(\"arviz\")\n\nif not logging.root.handlers:\n    handler = logging.StreamHandler()\n    _log.setLevel(logging.INFO)\n    _log.addHandler(handler)\n\nfrom .data import *\nfrom .plots import *\nfrom .stats import *\n", "path": "arviz/__init__.py"}]}