optimize imports

chatter/chatterbot/comparisons.py

@@ -1,5 +1,4 @@
 # -*- coding: utf-8 -*-
-import sys
 
 
 """

chatter/chatterbot/conversation.py

@@ -25,7 +25,6 @@ class Statement(StatementMixin):
     """
 
     def __init__(self, text, **kwargs):
-        import sys
 
         # Try not to allow non-string types to be passed to statements
         try:

chatter/chatterbot/ext/sqlalchemy_app/models.py

@@ -1,11 +1,12 @@
-from chatter.chatterbot.constants import TAG_NAME_MAX_LENGTH, STATEMENT_TEXT_MAX_LENGTH
-from chatter.chatterbot.conversation import StatementMixin
-from chatter.chatterbot.ext.sqlalchemy_app.types import UnicodeString
 from sqlalchemy import Table, Column, Integer, DateTime, ForeignKey, PickleType
 from sqlalchemy.ext.declarative import declared_attr, declarative_base
 from sqlalchemy.orm import relationship
 from sqlalchemy.sql import func
 
+from chatter.chatterbot.constants import TAG_NAME_MAX_LENGTH, STATEMENT_TEXT_MAX_LENGTH
+from chatter.chatterbot.conversation import StatementMixin
+from chatter.chatterbot.ext.sqlalchemy_app.types import UnicodeString
+
 
 class ModelBase(object):
     """

chatter/chatterbot/input/variable_input_type_adapter.py

@@ -12,8 +12,6 @@ class VariableInputTypeAdapter(InputAdapter):
     VALID_FORMATS = (JSON, TEXT, OBJECT, )
 
     def detect_type(self, statement):
-        import sys
-
 
         string_types = str
 

chatter/chatterbot/logic/low_confidence.py

@@ -1,7 +1,6 @@
 from __future__ import unicode_literals
 
 from chatter.chatterbot.conversation import Statement
-
 from .best_match import BestMatch
 
 

chatter/chatterbot/logic/multi_adapter.py

@@ -3,7 +3,6 @@ from __future__ import unicode_literals
 from collections import Counter
 
 from chatter.chatterbot import utils
-
 from .logic_adapter import LogicAdapter
 
 

chatter/chatterbot/preprocessors.py

@@ -27,7 +27,6 @@ def unescape_html(chatbot, statement):
     Convert escaped html characters into unescaped html characters.
     For example: "&lt;b&gt;" becomes "<b>".
     """
-    import sys
 
     # Replace HTML escape characters
     import html
@@ -43,8 +42,6 @@ def convert_to_ascii(chatbot, statement):
     For example: "på fédéral" becomes "pa federal".
     """
     import unicodedata
-    import sys
-
 
     text = unicodedata.normalize('NFKD', statement.text)
     text = text.encode('ascii', 'ignore').decode('utf-8')

chatter/chatterbot/utils.py

@@ -75,8 +75,6 @@ def input_function():
     Normalizes reading input between python 2 and 3.
     The function 'raw_input' becomes 'input' in Python 3.
     """
-    import sys
-
 
     user_input = input() # NOQA