CI Update Python

.azure-pipelines/azure-pipelines-base.yml

@@ -11,25 +11,21 @@ jobs:
   strategy:
     matrix:
       Python_39:
-        python.version: 3.9
+        python.version: "3.9"
         PyPIGithub: false
         name: "Python 3.9"
-      Python_38_preview:
-        python.version: 3.8
+      Python_39_preview:
+        python.version: "3.9"
         PyPIGithub: true
-        name: "Python 3.8"
+        name: "Python 3.9"
       Python_38:
-        python.version: 3.8
+        python.version: "3.8"
         PyPIGithub: false
         name: "Python 3.8"
       Python_37:
-        python.version: 3.7
+        python.version: "3.7"
         PyPIGithub: false
         name: "Python 3.7"
-      Python_36:
-        python.version: 3.6
-        PyPIGithub: false
-        name: "Python 3.6"
 
   steps:
   - task: UsePythonVersion@0

.azure-pipelines/azure-pipelines-benchmarks.yml

@@ -5,9 +5,9 @@ jobs:
   timeoutInMinutes: 360
   strategy:
     matrix:
-      Python_38:
-        python.version: 3.8
-        name: "Python 3.8 - benchmarks"
+      Python_39:
+        python.version: "3.9"
+        name: "Python 3.9 - benchmarks"
 
   steps:
 

.azure-pipelines/azure-pipelines-docs.yml

@@ -11,9 +11,9 @@ jobs:
   timeoutInMinutes: 360
   strategy:
     matrix:
-      Python_38:
-        python.version: 3.8
-        name: "Python 3.8 - docs"
+      Python_39:
+        python.version: "3.9"
+        name: "Python 3.9 - docs"
 
   steps:
   - script: |

.azure-pipelines/azure-pipelines-external.yml

@@ -10,25 +10,20 @@ jobs:
   timeoutInMinutes: 360
   strategy:
     matrix:
-      Python_38_Latest:
-        python.version: 3.8
+      Python_39_Latest:
+        python.version: "3.9"
         pystan.version: "latest"
         cmdstanpy.version: "latest"
         pymc3.version: "latest"
-        pyro.version: "latest"
-        pytorch.version: "latest"
         emcee.version: "latest"
         name: "External latest"
 
-      Python_38_Special_versions:
-        python.version: 3.8
+      Python_39_Special_versions:
+        python.version: "3.9"
         pystan.version: 2.19.1.1
         cmdstanpy.version: 0.9.67
         pymc3.version: "github"
-        pyro.version: 1.2
-        pytorch.version: 1.4
         emcee.version: 2
-        tensorflow.version: 1
         name: "External special"
 
   steps:
@@ -51,11 +46,7 @@ jobs:
       python -m pip install --upgrade pip
       python -m pip install wheel
 
-      if [ "$(pytorch.version)" = "latest" ]; then
-          python -m pip --no-cache-dir install torch -f https://download.pytorch.org/whl/cpu/torch_stable.html
-      else
-          python -m pip --no-cache-dir install torch=="$(pytorch.version)" -f https://download.pytorch.org/whl/cpu/torch_stable.html
-      fi
+      python -m pip --no-cache-dir install torch -f https://download.pytorch.org/whl/cpu/torch_stable.html
 
       if [ "$(pystan.version)" = "latest" ]; then
           python -m pip --no-cache-dir install pystan
@@ -73,12 +64,6 @@ jobs:
           python -m pip --no-cache-dir install cmdstanpy=="$(cmdstanpy.version)"
       fi
 
-      if [ "$(pyro.version)" = "latest" ]; then
-          python -m pip --no-cache-dir install pyro-ppl
-      else
-          python -m pip --no-cache-dir install pyro-ppl=="$(pyro.version)"
-      fi
-
       if [ "$(emcee.version)" = "latest" ]; then
           python -m pip --no-cache-dir install emcee h5py
       else
@@ -92,7 +77,8 @@ jobs:
           python -m pip --no-cache-dir install pymc3
       fi
 
-      grep -Ev '^pystan|^cmdstanpy|^pyro|^emcee|^pymc3' requirements-external.txt | xargs python -m pip install
+      grep -Ev '^pystan|^cmdstanpy|^emcee|^pymc3' requirements-external.txt | xargs python -m pip install
+
     displayName: 'Install packages'
 
   - script: |

.azure-pipelines/azure-pipelines-wheel.yml

@@ -12,9 +12,9 @@ jobs:
   timeoutInMinutes: 360
   strategy:
     matrix:
-      Python_38:
-        python.version: 3.8
-        name: "Python 3.8 - wheel"
+      Python_39:
+        python.version: "3.9"
+        name: "Python 3.9 - wheel"
 
   steps:
 

CHANGELOG.md

@@ -4,6 +4,7 @@
 ### New features
 
 ### Maintenance and fixes
+* Drop Python 3.6 support ([1430](https://github.com/arviz-devs/arviz/pull/1430))
 * Bokeh 3 compatibility. ([1919](https://github.com/arviz-devs/arviz/pull/1919))
 
 ### Deprecation

README.md

@@ -156,7 +156,7 @@ python setup.py install
 
 ## Dependencies
 
-ArviZ is tested on Python 3.6, 3.7 and 3.8, and depends on NumPy, SciPy, xarray, and Matplotlib.
+ArviZ is tested on Python 3.7, 3.8 and 3.9, and depends on NumPy, SciPy, xarray, and Matplotlib.
 
 
 ## Citation

arviz/data/inference_data.py

@@ -243,9 +243,9 @@ def groups(self) -> List[str]:
     class InferenceDataValuesView(ValuesView[xr.Dataset]):
         """ValuesView implementation for InferenceData, to allow it to implement Mapping."""
 
-        def __init__(
+        def __init__(  # pylint: disable=super-init-not-called
             self, parent: "InferenceData"
-        ) -> None:  # pylint: disable=super-init-not-called
+        ) -> None:
             """Create a new InferenceDataValuesView from an InferenceData object."""
             self.parent = parent
 
@@ -277,9 +277,9 @@ def values(self) -> "InferenceData.InferenceDataValuesView":
     class InferenceDataItemsView(ItemsView[str, xr.Dataset]):
         """ItemsView implementation for InferenceData, to allow it to implement Mapping."""
 
-        def __init__(
+        def __init__(  # pylint: disable=super-init-not-called
             self, parent: "InferenceData"
-        ) -> None:  # pylint: disable=super-init-not-called
+        ) -> None:
             """Create a new InferenceDataItemsView from an InferenceData object."""
             self.parent = parent
 

scripts/create_testenv.sh

@@ -7,8 +7,8 @@ command -v conda >/dev/null 2>&1 || {
   exit 1;
 }
 
-# if no python specified, use Travis version, or else 3.8
-PYTHON_VERSION=${PYTHON_VERSION:-${TRAVIS_PYTHON_VERSION:-3.8}}
+# if no python specified, use 3.9
+PYTHON_VERSION=${PYTHON_VERSION:-3.9}
 PYSTAN_VERSION=${PYSTAN_VERSION:-latest}
 PYTORCH_VERSION=${PYTORCH_VERSION:-latest}
 PYRO_VERSION=${PYRO_VERSION:-latest}

setup.py

@@ -66,9 +66,9 @@ def get_version():
         "License :: OSI Approved :: Apache Software License",
         "Programming Language :: Python",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
+        "Programming Language :: Python :: 3.9",
         "Topic :: Scientific/Engineering",
         "Topic :: Scientific/Engineering :: Visualization",
         "Topic :: Scientific/Engineering :: Mathematics",