Fix dictionary iteration methods

Run `2to3-3.8 -f dict -w .`

See: <https://docs.python.org/2/library/2to3.html#2to3fixer-dict> and
<https://stackoverflow.com/questions/17695456/why-does-python-3-need-dict-items-to-be-wrapped-with-list>

1 files changed, 3 insertions, 3 deletions

diff --git a/wqflask/maintenance/gen_select_dataset.py b/wqflask/maintenance/gen_select_dataset.py
index 647e58a2..78217587 100644
--- a/wqflask/maintenance/gen_select_dataset.py
+++ b/wqflask/maintenance/gen_select_dataset.py
@@ -108,7 +108,7 @@ def get_types(groups):
     """Build types list"""
     types = {}
     #print("Groups: ", pf(groups))
-    for species, group_dict in groups.iteritems():
+    for species, group_dict in list(groups.items()):
         types[species] = {}
         for group_name, _group_full_name in group_dict:
             # make group an alias to shorten the code
@@ -195,9 +195,9 @@ def build_types(species, group):
 def get_datasets(types):
     """Build datasets list"""
     datasets = {}
-    for species, group_dict in types.iteritems():
+    for species, group_dict in list(types.items()):
         datasets[species] = {}
-        for group, type_list in group_dict.iteritems():
+        for group, type_list in list(group_dict.items()):
             datasets[species][group] = {}
             for type_name in type_list:
                 these_datasets = build_datasets(species, group, type_name[0])