Applied flake8 in config.

papers/configs.py

@@ -1,5 +1,4 @@
 import os
-import copy
 from .p3 import configparser
 
 # constant stuff (DFT = DEFAULT)
@@ -32,12 +31,15 @@ BOOLEANS = {'import_copy', 'import_move', 'color', 'version_warning'}
 # package-shared config that can be accessed using :
 # from configs import config
 _config = None
+
+
 def config(section=MAIN_SECTION):
     if _config is None:
         raise ValueError('not config instanciated yet')
     _config._section = section
     return _config
 
+
 class Config(object):
 
     def __init__(self, **kwargs):
@@ -89,5 +91,6 @@ class Config(object):
                 value = str2bool(value)
             yield name, value
 
+
 def str2bool(s):
     return str(s).lower() in ('yes', 'true', 't', 'y', '1')