def getproxies_environment():
 proxies = {}
 for (name, value) in os.environ.items():
  name = name.lower()
  if (value and (name[(-6):] == '_proxy')):
   proxies[name[:(-6)]] = value
 return proxies

def getproxies_environment ( ) : proxies = { } for ( name , value ) in os . environ . items ( ) : name = name . lower ( ) if ( value and ( name [ ( - 6 ) : ] == '_proxy' ) ) : proxies [ name [ : ( - 6 ) ] ] = value return proxies
return a dictionary of scheme -> proxy server url mappings .