Format existing code with black

IPython/utils/tz.py

@@ -1,48 +1,52
 # encoding: utf-8
 """
 Timezone utilities
 
 Just UTC-awareness right now
 """
 
 #-----------------------------------------------------------------------------
 #  Copyright (C) 2013 The IPython Development Team
 #
 #  Distributed under the terms of the BSD License.  The full license is in
 #  the file COPYING, distributed as part of this software.
 #-----------------------------------------------------------------------------
 
 #-----------------------------------------------------------------------------
 # Imports
 #-----------------------------------------------------------------------------
 
 from datetime import tzinfo, timedelta, datetime
 
 #-----------------------------------------------------------------------------
 # Code
 #-----------------------------------------------------------------------------
 # constant for zero offset
 ZERO = timedelta(0)
 
+
 class tzUTC(tzinfo):
     """tzinfo object for UTC (zero offset)"""
 
     def utcoffset(self, d):
         return ZERO
 
     def dst(self, d):
         return ZERO
 
 
 UTC = tzUTC()  # type: ignore[abstract]
 
 
 def utc_aware(unaware):
     """decorator for adding UTC tzinfo to datetime's utcfoo methods"""
+
     def utc_method(*args, **kwargs):
         dt = unaware(*args, **kwargs)
         return dt.replace(tzinfo=UTC)
+
     return utc_method
 
+
 utcfromtimestamp = utc_aware(datetime.utcfromtimestamp)
 utcnow = utc_aware(datetime.utcnow)