Update astropy-helpers to v3.2.1

.travis.yml

@@ -54,7 +54,7 @@ matrix:
         # Try without using statsmodels
         - env: PYTHON_VERSION=3.5 PIP_DEPENDENCIES='emcee'
 
-        - env: PYTHON_VERSION=3.6 PIP_DEPENDENCIES='nbsphinx' SETUP_CMD='build_docs -w'
+        - env: PYTHON_VERSION=3.6 PIP_DEPENDENCIES='nbsphinx sphinx-astropy' SETUP_CMD='build_docs -w'
 
         # Try Astropy development version
         - env: PYTHON_VERSION=3.7 ASTROPY_VERSION=development

ah_bootstrap.py

@@ -48,10 +48,7 @@
 from distutils import log
 from distutils.debug import DEBUG
 
-try:
-    from ConfigParser import ConfigParser, RawConfigParser
-except ImportError:
-    from configparser import ConfigParser, RawConfigParser
+from configparser import ConfigParser, RawConfigParser
 
 import pkg_resources
 
@@ -119,24 +116,27 @@
 
     # We want the Python version as a string, which we can get from the platform module
     import platform
-    python_version = platform.python_version()
-
-    if not req.specifier.contains(python_version):
+    # strip off trailing '+' incase this is a dev install of python
+    python_version = platform.python_version().strip('+')
+    # allow pre-releases to count as 'new enough'
+    if not req.specifier.contains(python_version, True):
         if parent_package is None:
-            print("ERROR: Python {} is required by this package".format(req.specifier))
+            message = "ERROR: Python {} is required by this package\n".format(req.specifier)
         else:
-            print("ERROR: Python {} is required by {}".format(req.specifier, parent_package))
+            message = "ERROR: Python {} is required by {}\n".format(req.specifier, parent_package)
+        sys.stderr.write(message)
         sys.exit(1)
 
 if sys.version_info < __minimum_python_version__:
 
     if parent_package is None:
-        print("ERROR: Python {} or later is required by astropy-helpers".format(
-            __minimum_python_version__))
+        message = "ERROR: Python {} or later is required by astropy-helpers\n".format(
+            __minimum_python_version__)
     else:
-        print("ERROR: Python {} or later is required by astropy-helpers for {}".format(
-            __minimum_python_version__, parent_package))
+        message = "ERROR: Python {} or later is required by astropy-helpers for {}\n".format(
+            __minimum_python_version__, parent_package)
 
+    sys.stderr.write(message)
     sys.exit(1)
 
 _str_types = (str, bytes)
@@ -146,14 +146,14 @@
 # issues with either missing or misbehaving pacakges (including making sure
 # setuptools itself is installed):
 
-# Check that setuptools 1.0 or later is present
+# Check that setuptools 30.3 or later is present
 from distutils.version import LooseVersion
 
 try:
     import setuptools
-    assert LooseVersion(setuptools.__version__) >= LooseVersion('1.0')
+    assert LooseVersion(setuptools.__version__) >= LooseVersion('30.3')
 except (ImportError, AssertionError):
-    print("ERROR: setuptools 1.0 or later is required by astropy-helpers")
+    sys.stderr.write("ERROR: setuptools 30.3 or later is required by astropy-helpers\n")
     sys.exit(1)
 
 # typing as a dependency for 1.6.1+ Sphinx causes issues when imported after

stingray/conftest.py

@@ -2,7 +2,18 @@
 # by importing them here in conftest.py they are discoverable by py.test
 # no matter how it is invoked within the source tree.
 
-from astropy.tests.pytest_plugins import *
+from astropy.version import version as astropy_version
+if astropy_version < '3.0':
+    # With older versions of Astropy, we actually need to import the pytest
+    # plugins themselves in order to make them discoverable by pytest.
+    from astropy.tests.pytest_plugins import *
+else:
+    # As of Astropy 3.0, the pytest plugins provided by Astropy are
+    # automatically made available when Astropy is installed. This means it's
+    # not necessary to import them here, but we still need to import global
+    # variables that are used for configuration.
+    from astropy.tests.plugins.display import PYTEST_HEADER_MODULES, TESTED_VERSIONS
+from astropy.tests.helper import enable_deprecations_as_exceptions
 
 ## Uncomment the following line to treat all DeprecationWarnings as
 ## exceptions