DOC: Deprecation warnings to stacklevel 2

Author: effigies

nibabel/imageclasses.py

@@ -33,7 +33,8 @@
 # DEPRECATED: mapping of names to classes and class functionality
 class ClassMapDict(dict):
     def __getitem__(self, *args, **kwargs):
-        warnings.warn("class_map is deprecated.", DeprecationWarning)
+        warnings.warn("class_map is deprecated.", DeprecationWarning,
+                      stacklevel=2)
         return super(ClassMapDict, self).__getitem__(*args, **kwargs)
 
 class_map = ClassMapDict(
@@ -86,7 +87,8 @@ def __getitem__(self, *args, **kwargs):
 
 class ExtMapRecoder(Recoder):
     def __getitem__(self, *args, **kwargs):
-        warnings.warn("ext_map is deprecated.", DeprecationWarning)
+        warnings.warn("ext_map is deprecated.", DeprecationWarning,
+                      stacklevel=2)
         return super(ExtMapRecoder, self).__getitem__(*args, **kwargs)
 
 # mapping of extensions to default image class names

nibabel/loadsave.py

@@ -58,7 +58,8 @@ def guessed_image_type(filename):
     image_class : class
         Class corresponding to guessed image type
     """
-    warnings.warn('guessed_image_type is deprecated', DeprecationWarning)
+    warnings.warn('guessed_image_type is deprecated', DeprecationWarning,
+                  stacklevel=2)
     sniff = None
     for image_klass in all_image_classes:
         is_valid, sniff = image_klass.path_maybe_image(filename, sniff)
@@ -233,7 +234,8 @@ def which_analyze_type(binaryblock):
     * if ``sizeof_hdr`` is 348 or byteswapped 348 assume Analyze
     * Return None
     """
-    warnings.warn('which_analyze_type is deprecated', DeprecationWarning)
+    warnings.warn('which_analyze_type is deprecated', DeprecationWarning,
+                  stacklevel=2)
     from .nifti1 import header_dtype
     hdr_struct = np.ndarray(shape=(), dtype=header_dtype, buffer=binaryblock)
     bs_hdr_struct = hdr_struct.byteswap()