MAINT: Require yapf >= 0.27 for check specs

Author: effigies

nipype/info.py

@@ -186,7 +186,7 @@ def get_nipype_gitversion():
     'nipy': ['nitime', 'nilearn<0.5.0', 'dipy', 'nipy', 'matplotlib'],
     'profiler': ['psutil>=5.0'],
     'pybids': ['pybids>=0.7.0'],
-    'specs': ['yapf'],
+    'specs': ['yapf>=0.27'],
     'ssh': ['paramiko'],
     'tests': TESTS_REQUIRES,
     'xvfbwrapper': ['xvfbwrapper'],

tools/checkspecs.py

@@ -10,8 +10,14 @@
 import re
 import sys
 import warnings
+from distutils.version import LooseVersion
 
 from nipype.interfaces.base import BaseInterface
+
+import yapf
+if LooseVersion(yapf.__version__) < '0.27':
+    raise ImportError("Please upgrade yapf to version 0.27 or newer for stable formatting")
+
 from yapf.yapflib.yapf_api import FormatCode