Update app.py

app.py

@@ -45,7 +45,7 @@ def proc_nouns(sen_list):
     print("done nouns")
     return noun_list
 
-def sort_doc(in_list: list, steps_in: int, control: int, prev_list: string):
+def sort_doc(in_list: list, steps_in: int, control: int, prev_list: str):
     control_json={'control':'0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ','char':'','leng':62}
     key_cnt=len(in_list)
     print(key_cnt)