PythonでBrackets

#coding utf-8
import string

def checkio(expression):
 	s = expression
 	s = s.encode("utf-8")
 	s = s.translate(string.maketrans("",""),"+-*/0123456789")
 	if s == "": return True

 	t = 0
 	while t < len(expression):
	 	s = s.replace("()","").replace("{}","").replace("[]","")
 	 	t+=1
 	 	if s == "": return True
 	return False

if __name__ == '__main__':
#	checkio(u"((5+3)*2+1)")# == True, "Simple"
#	checkio(u"{[(3+1)+2]+}")# == True, "Different types"
#	checkio(u"(3+{1-1)}")# == False, ") is alone inside {}"
#	checkio(u"[1+1]+(2*2)-{3/3}")# == True, "Different operators"
#	checkio(u"(({[(((1)-2)+3)-3]/3}-3)") #== False, "One is redundant"
#	checkio(u"2+3") #== True, "No brackets, no problem"
#	checkio("({[3]})-[4/(3*{1001-1000}*3)/4]")
#	checkio("((5+3)*2+1)")
#	checkio("({[3]})-[4/(3*{1001-1000}*3)/4]")
	checkio("2+3")

参考にしたサイト

PythonにおけるUnicodeとUTF-8の相互変換 - CtrlShift.net
Pythonでの文字列置換をマスターする - orangain flavor
文字列の操作 - ひきメモ

一言

綺麗に書けたし、綺麗に解けたと思える納得の出来。