Merge pull request gongjianhui#51 from cclauss/patch-1

Compound compares

export-configure.py

@@ -22,10 +22,10 @@
 
 def check_requirements():
  def check_python_version():
- if sys.hexversion >= 0x2000000 and sys.hexversion <= 0x2070000:
+ if 0x2000000 <= sys.hexversion <= 0x2070000:
  print('your "python" lower than 2.7.0 upgrade.')
  return False
- if sys.hexversion >= 0x3000000 and sys.hexversion <= 0x3040000:
+ elif 0x3000000 <= sys.hexversion <= 0x3040000: # Is Python 3.5.1 not acceptable??
  print('your "python" lower than 3.4.0 upgrade.')
  return False
  return True
@@ -42,7 +42,7 @@ def handle_delta(items):
  def handle(item):
  ip, delta = item
  delta = list(item for item in delta if item != None)
- if len(delta):
+ if delta:
  return Item(tag, ip, sum(delta) / float(len(delta)))
  return Item(tag, ip, float('NaN'))
 
@@ -53,9 +53,7 @@ def handle_sorted():
  return sorted(data, key=attrgetter('avg_rtt'))
 
  iptable = handle_sorted()
-
- if len(iptable):
- return iptable[0]
+ return iptable[0] if iptable else None
 
 
 def export(payload, target):