modified path simplify

class Solution:
    # @param A : string
    # @return a strings
    #path = "/home/", => "/home"
    #path = "/a/./b/../../c/", => "/c"
    def simplifyPath(self, A):
        stack = []
        result = ''
        for char in A:
            stack.append(char)
        if A[len(A)-1] == '/':
            last_char_slash = True
        else:
            last_char_slash = False
        while True:
            if len(stack) == 0:
                return result[::-1]
            tmp = stack.pop()
            if tmp == '/' and last_char_slash == True:
                continue
            if tmp == '/':
                result += tmp
                return result[::-1]
            if tmp != '/':
                result += tmp


s = Solution()
print(s.simplifyPath("/a/./b/../../c/"))