+ if "" == argument:
+ tokens = []
+ else:
+ tokens = argument.split(" ")
+ if (len(tokens) > 1 or (len(tokens) == 1 and not tokens[0].isdigit())):
+ help()
+ return
+
+ from random import choice, shuffle
+ select_length = 2
+ if len(tokens) == 1:
+ n = int(tokens[0])
+ if n > 0:
+ select_length = n
+ else:
+ notice("bad value, using default: " + str(select_length))
+ selections = []
+