import chardet
import os

def strJudgeCode(str):
	return chardet.detect(str)

def readFile(path):
	try:
		f = open(path, 'r')
		filecontent = f.read()
	finally:
		if f:
			f.close()

	return filecontent

def WriteFile(str, path):
	try:
		f = open(path, 'w')
		f.write(str)
	finally:
		if f:
			f.close()

def converCode(path):
	file_con = readFile(path)
	result = strJudgeCode(file_con)
	#print(file_con)
	if result['encoding'] == 'utf-8':
		#os.remove(path)
		a_unicode = file_con.decode('utf-8')
		gb2312 = a_unicode.encode('gbk')	
		WriteFile(gb2312, path)

def listDirFile(dir):
	list = os.listdir(dir)
	for line in list:
		filepath = os.path.join(dir, line)
		if os.path.isdir(filepath):
			listDirFile(filepath)
		else:
			print(line)
			converCode(filepath)			

if __name__ == '__main__':
	listDirFile(u'G:\Classess')