Apply PEP8

"Surround top-level function and class definitions with two blank
lines."

https://www.python.org/dev/peps/pep-0008/#blank-lines

nxt/locator.py

@@ -19,9 +19,11 @@
 class BrickNotFoundError(Exception):
     pass
 
+
 class NoBackendError(Exception):
     pass
 
+
 class Method():
     """Used to indicate which comm backends should be tried by find_bricks/
 find_one_brick. Any or all can be selected."""
@@ -31,6 +33,7 @@ def __init__(self, usb=True, bluetooth=True, device=False):
         self.bluetooth = bluetooth
         self.device = device
 
+
 def find_bricks(host=None, name=None, silent=False, method=Method()):
     """Used by find_one_brick to look for bricks ***ADVANCED USERS ONLY***"""
     methods_available = 0
@@ -73,6 +76,7 @@ def find_bricks(host=None, name=None, silent=False, method=Method()):
     if methods_available == 0:
         raise NoBackendError("No selected backends are available! Did you install the comm modules?")
 
+
 def find_one_brick(host=None, name=None, silent=False, strict=None, debug=False, method=None, confpath=None):
     """Use to find one brick. The host and name args limit the search to
 a given MAC or brick name. Set silent to True to stop nxt-python from
@@ -152,16 +156,19 @@ def find_one_brick(host=None, name=None, silent=False, strict=None, debug=False,
     try the 'nxt_test' script located in /bin or ~/.local/bin""")
     raise BrickNotFoundError
 
+
 def server_brick(host, port = 2727):
     from . import ipsock
     sock = ipsock.IpSock(host, port)
     return sock.connect()
 
+
 def device_brick(filename):
     from . import devsock
     sock = devsock.find_bricks(filename=filename)
     return sock.connect()
 
+
 def read_config(confpath=None, debug=False):
     conf = configparser.RawConfigParser({'host': None, 'name': None, 'strict': True, 'method': ''})
     if not confpath: confpath = os.path.expanduser('~/.nxt-python')
@@ -171,6 +178,7 @@ def read_config(confpath=None, debug=False):
         conf.add_section('Brick')
     return conf
 
+
 def make_config(confpath=None):
     conf = configparser.RawConfigParser()
     if not confpath: confpath = os.path.expanduser('~/.nxt-python')