Make tables a required dependency (#1287)

* make tables a required dep, remove requires_tables test decorator

* whatsnew

* add tables to 3.6-min yml

* use pip for tables on 3.6 and 3.7 for windows DLL load issue

* use pip tables on 3.6-min for numpy compat issue

* only install tables by default if not (OSX & 3.9)

* remove tables from 3.6-min

* forgot the OS X part

* put back requires_tables decorator

* fix silly bug

* reset back to 636da68

* inelegantly disable mac os/py 3.9 job

* add pytables to 3.6-min

* fix posix.yml condition

* try different string interpolation

* I don't understand azure variables so skip mac/3.9 this way instead

* pin to blosc to older version to get tables working on win 3.6 and 3.7

* pin an older numexpr compatible with our min numpy for 3.6-min

* promote tables to a normal import in clearsky.py

Author: kandersolar

azure-pipelines.yml

@@ -12,7 +12,7 @@ jobs:
     vmImage: ubuntu-16.04
 
 
-- template: ci/azure/posix.yml
+- template: ci/azure/posix_no_39.yml
   parameters:
     name: Test_bare_macOS
     vmImage: macOS-10.14

ci/azure/posix_no_39.yml

@@ -0,0 +1,39 @@
+parameters:
+  name: ''
+  vmImage: ''
+
+jobs:
+- job: ${{ parameters.name }}
+  pool:
+    vmImage: ${{ parameters.vmImage }}
+  strategy:
+    matrix:
+      Python36:
+        python.version: '3.6'
+      Python37:
+        python.version: '3.7'
+      Python38:
+        python.version: '3.8'
+
+  steps:
+  - task: UsePythonVersion@0
+    inputs:
+      versionSpec: '$(python.version)'
+
+  - script: |
+      pip install pytest pytest-cov pytest-mock requests-mock pytest-timeout pytest-azurepipelines pytest-rerunfailures pytest-remotedata
+      pip install -e .
+      pytest pvlib --junitxml=junit/test-results.xml --cov=com --cov-report=xml --cov-report=html
+    displayName: 'Test with pytest'
+
+  - task: PublishTestResults@2
+    condition: succeededOrFailed()
+    inputs:
+      testResultsFiles: '**/test-*.xml'
+      testRunTitle: 'Publish test results for Python $(python.version)'
+
+  - task: PublishCodeCoverageResults@1
+    inputs:
+      codeCoverageTool: Cobertura
+      summaryFileLocation: '$(System.DefaultWorkingDirectory)/**/coverage.xml'
+      reportDirectory: '$(System.DefaultWorkingDirectory)/**/htmlcov'

ci/requirements-py36-min.yml

@@ -5,6 +5,7 @@ dependencies:
     - coveralls
     - nose
     - pip
+    - pytables  # tables when using pip+PyPI
     - pytest
     - pytest-cov
     - pytest-mock
@@ -20,3 +21,4 @@ dependencies:
         - pytest-rerunfailures # conda version is >3.6
         - pytest-remotedata # conda package is 0.3.0, needs > 0.3.1
         - requests-mock
+        - numexpr==2.6.2 # needed for tables, but newest version is not compatible with numpy 1.12

ci/requirements-py36.yml

@@ -3,6 +3,7 @@ channels:
     - defaults
     - conda-forge
 dependencies:
+    - blosc=1.14.3  # newest version breaks tables (pytables) on windows
     - coveralls
     - cython
     - ephem

ci/requirements-py37.yml

@@ -3,6 +3,7 @@ channels:
     - defaults
     - conda-forge
 dependencies:
+    - blosc=1.14.3  # newest version breaks tables (pytables) on windows
     - coveralls
     - cython
     - ephem

docs/sphinx/source/whatsnew/v0.9.0.rst

@@ -230,7 +230,8 @@ Documentation
 
 Requirements
 ~~~~~~~~~~~~
-* ``dataclasses`` is required for python 3.6
+* ``dataclasses`` is required for python 3.6 (:pull:`1076`)
+* ``tables`` is now required instead of optional (:issue:`1286`, :pull:`1287`)
 
 Contributors
 ~~~~~~~~~~~~

pvlib/clearsky.py

@@ -11,6 +11,7 @@
 import pandas as pd
 from scipy.optimize import minimize_scalar
 from scipy.linalg import hankel
+import tables
 
 from pvlib import atmosphere, tools
 
@@ -186,13 +187,6 @@ def lookup_linke_turbidity(time, latitude, longitude, filepath=None,
     # 1st row: 89.9583 S, 2nd row: 89.875 S
     # 1st column: 179.9583 W, 2nd column: 179.875 W
 
-    try:
-        import tables
-    except ImportError:
-        raise ImportError('The Linke turbidity lookup table requires tables. '
-                          'You can still use clearsky.ineichen if you '
-                          'supply your own turbidities.')
-
     if filepath is None:
         pvlib_path = os.path.dirname(os.path.abspath(__file__))
         filepath = os.path.join(pvlib_path, 'data', 'LinkeTurbidities.h5')

pvlib/tests/conftest.py

@@ -105,15 +105,6 @@ def assert_frame_equal(left, right, **kwargs):
     not has_statsmodels, reason='requires statsmodels')
 
 
-try:
-    import tables
-    has_tables = True
-except ImportError:
-    has_tables = False
-
-requires_tables = pytest.mark.skipif(not has_tables, reason='requires tables')
-
-
 try:
     import ephem
     has_ephem = True

pvlib/tests/test_clearsky.py

@@ -16,7 +16,7 @@
 from pvlib import atmosphere
 from pvlib import irradiance
 
-from .conftest import requires_tables, DATA_DIR
+from .conftest import DATA_DIR
 
 
 def test_ineichen_series():
@@ -189,7 +189,6 @@ def test_ineichen_altitude():
     assert_frame_equal(expected, out)
 
 
-@requires_tables
 def test_lookup_linke_turbidity():
     times = pd.date_range(start='2014-06-24', end='2014-06-25',
                           freq='12h', tz='America/Phoenix')
@@ -202,7 +201,6 @@ def test_lookup_linke_turbidity():
     assert_series_equal(expected, out)
 
 
-@requires_tables
 def test_lookup_linke_turbidity_leapyear():
     times = pd.date_range(start='2016-06-24', end='2016-06-25',
                           freq='12h', tz='America/Phoenix')
@@ -215,7 +213,6 @@ def test_lookup_linke_turbidity_leapyear():
     assert_series_equal(expected, out)
 
 
-@requires_tables
 def test_lookup_linke_turbidity_nointerp():
     times = pd.date_range(start='2014-06-24', end='2014-06-25',
                           freq='12h', tz='America/Phoenix')
@@ -226,7 +223,6 @@ def test_lookup_linke_turbidity_nointerp():
     assert_series_equal(expected, out)
 
 
-@requires_tables
 def test_lookup_linke_turbidity_months():
     times = pd.date_range(start='2014-04-01', end='2014-07-01',
                           freq='1M', tz='America/Phoenix')
@@ -237,7 +233,6 @@ def test_lookup_linke_turbidity_months():
     assert_series_equal(expected, out)
 
 
-@requires_tables
 def test_lookup_linke_turbidity_months_leapyear():
     times = pd.date_range(start='2016-04-01', end='2016-07-01',
                           freq='1M', tz='America/Phoenix')
@@ -248,7 +243,6 @@ def test_lookup_linke_turbidity_months_leapyear():
     assert_series_equal(expected, out)
 
 
-@requires_tables
 def test_lookup_linke_turbidity_nointerp_months():
     times = pd.date_range(start='2014-04-10', end='2014-07-10',
                           freq='1M', tz='America/Phoenix')
@@ -480,7 +474,6 @@ def test_simplified_solis_nans_series():
     assert_frame_equal(expected, out)
 
 
-@requires_tables
 def test_linke_turbidity_corners():
     """Test Linke turbidity corners out of bounds."""
     months = pd.DatetimeIndex('%d/1/2016' % (m + 1) for m in range(12))

pvlib/tests/test_location.py

@@ -15,7 +15,7 @@
 from pvlib.location import Location
 from pvlib.solarposition import declination_spencer71
 from pvlib.solarposition import equation_of_time_spencer71
-from .conftest import requires_ephem, requires_tables
+from .conftest import requires_ephem
 
 
 def test_location_required():
@@ -77,7 +77,6 @@ def times():
                          freq='3H')
 
 
-@requires_tables
 def test_get_clearsky(mocker, times):
     tus = Location(32.2, -111, 'US/Arizona', 700, 'Tucson')
     m = mocker.spy(pvlib.clearsky, 'ineichen')