Fix imports in refactored test scripts

tests/KKRhost/tools/common_functions.py

@@ -273,6 +273,11 @@ def cmp_modes(cmplist, path00, s_rms_bound=10**-12, max_s_charges_bound=10**-12)
     check convergence and charges across parallel runs
     returns dict with rms and charges entries for all paths given in 'cmplist' in parent directory 'path00'
     """
+    import os
+    import pprint
+    from numpy import std
+    from kkrparser_functions import parse_kkr_outputfile
+
     cmp_values = {'rms':[], 'charges':[]}
     for addpath in cmplist:
         path0 = path00+'/'+addpath

tests/KKRhost/tools/test_verify_BdG.py

@@ -4,9 +4,7 @@
 from __future__ import print_function
 
 #import pytest
-import os, pprint
-from kkrparser_functions import parse_kkr_outputfile
-from numpy import std, array
+from numpy import array
 from common_functions import search_string, cmp_modes