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:
            tmp = stack.pop()
            if tmp == '/' and last_char_slash == True:
                continue
            if tmp != '/':
                result += tmp
            elif tmp == '/':
                result += tmp
                return result[::-1]

s = Solution()
print(s.simplifyPath("/home/"))




/Library/Frameworks/Python.framework/Versions/3.4/bin/python3.4 /Users/mona/PycharmProjects/PythonCodes/simplify_path.py
Traceback (most recent call last):
  File "/Users/mona/PycharmProjects/PythonCodes/simplify_path.py", line 26, in <module>
    print(s.simplifyPath("/home/"))
  File "/Users/mona/PycharmProjects/PythonCodes/simplify_path.py", line 16, in simplifyPath
    tmp = stack.pop()
IndexError: pop from empty list

Process finished with exit code 1