Update helpers v3.2.1

.travis.yml

@@ -52,6 +52,7 @@ matrix:
         - env: PYTHON_VERSION=3.6
                SETUP_CMD='build_docs -w'
                CONDA_CHANNELS='conda-forge astropy'
+               PIP_DEPENDENCIES='sphinx-astropy'
 
         # Do a test without the optional dependencies
         - env: SETUP_CMD='test'

ah_bootstrap.py

@@ -48,37 +48,20 @@
 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
 
 from setuptools import Distribution
 from setuptools.package_index import PackageIndex
 
 # This is the minimum Python version required for astropy-helpers
-__minimum_python_version__ = (2, 7)
-
-if sys.version_info[0] < 3:
-    _str_types = (str, unicode)
-    _text_type = unicode
-    PY3 = False
-else:
-    _str_types = (str, bytes)
-    _text_type = str
-    PY3 = True
+__minimum_python_version__ = (3, 5)
 
 # TODO: Maybe enable checking for a specific version of astropy_helpers?
 DIST_NAME = 'astropy-helpers'
 PACKAGE_NAME = 'astropy_helpers'
-
-if PY3:
-    UPPER_VERSION_EXCLUSIVE = None
-else:
-    UPPER_VERSION_EXCLUSIVE = '3'
+UPPER_VERSION_EXCLUSIVE = None
 
 # Defaults for other options
 DOWNLOAD_IF_NEEDED = True
@@ -138,35 +121,39 @@
     # 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)
+
 
 # What follows are several import statements meant to deal with install-time
 # 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
@@ -225,7 +212,7 @@ def __init__(self, path=None, index_url=None, use_git=None, offline=None,
         if not (isinstance(path, _str_types) or path is False):
             raise TypeError('path must be a string or False')
 
-        if PY3 and not isinstance(path, _text_type):
+        if not isinstance(path, str):
             fs_encoding = sys.getfilesystemencoding()
             path = path.decode(fs_encoding)  # path to unicode
 
@@ -852,9 +839,9 @@ def run_cmd(cmd):
         stdio_encoding = 'latin1'
 
     # Unlikely to fail at this point but even then let's be flexible
-    if not isinstance(stdout, _text_type):
+    if not isinstance(stdout, str):
         stdout = stdout.decode(stdio_encoding, 'replace')
-    if not isinstance(stderr, _text_type):
+    if not isinstance(stderr, str):
         stderr = stderr.decode(stdio_encoding, 'replace')
 
     return (p.returncode, stdout, stderr)

appveyor.yml

@@ -19,14 +19,6 @@ environment:
       MPLBACKEND: "Agg"
 
   matrix:
-
-      # We test Python 2.7 and 3.7 because 2.7 is the supported Python 2
-      # release of Astropy and Python 3.7 is the latest Python 3 release.
-
-      - PYTHON_VERSION: "2.7"
-        ASTROPY_VERSION: "stable"
-        NUMPY_VERSION: "1.15"
-
       - PYTHON_VERSION: "3.7"
         ASTROPY_VERSION: "stable"
         NUMPY_VERSION: "stable"