fix import of md5

Author: oesteban

nipype/pipeline/engine/nodes.py

@@ -35,14 +35,14 @@
 from ... import config, logging
 from ...utils.misc import (flatten, unflatten, str2bool)
 from ...utils.filemanip import (
-    save_json, FileNotFoundError, filename_to_list, list_to_filename,
+    md5, save_json, FileNotFoundError, filename_to_list, list_to_filename,
     copyfiles, fnames_presuffix, loadpkl, split_filename, load_json, makedirs,
     emptydirs, savepkl, write_rst_header, write_rst_dict, write_rst_list, to_str
 )
 
 from ...interfaces.base import (
     traits, InputMultiPath, CommandLine, Undefined, DynamicTraitedSpec,
-    Bunch, InterfaceResult, md5, Interface, isdefined
+    Bunch, InterfaceResult, Interface, isdefined
 )
 from .utils import (
     modify_paths, clean_working_directory, get_print_name,