Python's method for solving whether all subsequences are palindromes for a given string

#!usr/bin/env python
# -*- coding:utf-8 -*-
'''''
__AUthor__:Yishui Cold City
Function: Finds all palindromic subsequences for a given string
'''
def is_huiwen(one_str_list):
  '''''
  Input a list of strings to determine if they are palindromic sequences
  '''
  if len(one_str_list)==1:
    return True
  else:
    half=len(one_str_list)/2
    if len(one_str_list)%2==0:
      first_list=one_str_list[:half]
      second_list=one_str_list[half:]
    else:
      first_list=one_str_list[:half]
      second_list=one_str_list[half+1:]
    if first_list==second_list[::-1]:
      return True
    else:
      return False
def get_list_all_sub_list(num_list):
  '''
  Input a list, return all the sub-lists of the list, the empty list defined here does not belong to the sub-list, so: the minimum length of the sub-list is 1
  '''
  if len(num_list)==1:
    return [num_list]
  sub_list=get_list_all_sub_list(num_list[:-1])
  extra=num_list[-1:]
  temp_list=[]
  for one in sub_list:
    temp_list.append(one+extra)
  return sub_list+temp_list
def slice_func(one_str):
  '''''
  '''
  result_list=[]
  for i in range(1,len(one_str)):
    result_list.append(one_str[:i])
    result_list.append(one_str[i:])
  result_list+=list(one_str)
  result_list.append(one_str)
  return list(set(result_list))
def main_func2():
  '''''
  Main Calling Functions
  '''
  str_list=['abdc','abba']
  for one_str in str_list:
    result_list=slice_func(one_str)
    print '-----------------------------------------------'
    for one in result_list:
      if is_huiwen(list(one)):
        print one+'It's a palindrome sequence'
def main_func1():
  '''''
  Main Calling Functions
  '''
  str_list=['abdc','abba']
  for one_str in str_list:
    one_str_list=list(one_str)
    one_all_sub_list=get_list_all_sub_list(one_str_list)
    print '------------------------------------------------'
    print one_all_sub_list
    for one in one_all_sub_list:
      if is_huiwen(one):
        print ''.join(one)+'It's a palindrome sequence'
if __name__ == '__main__':
  print "I test results:"
  main_func2()