lazy import of tempita to avoid cython dependency when building from c files

jeremiedbb · jeremiedbb · commit 916c6ce45c69 · 2019-10-21T14:11:42.000+02:00
diff --git a/sklearn/utils/setup.py b/sklearn/utils/setup.py
@@ -5,7 +5,6 @@
 def configuration(parent_package='', top_path=None):
     import numpy
     from numpy.distutils.misc_util import Configuration
-    from Cython import Tempita
 
     config = Configuration('utils', parent_package, top_path)
 
@@ -58,6 +57,7 @@ def configuration(parent_package='', top_path=None):
 
         with open(pyxfiles, "r") as f:
             tmpl = f.read()
+        from Cython import Tempita  # noqa
         pyxcontent = Tempita.sub(tmpl)
 
         with open(outfile, "w") as f:
