这个问题是由于cretate_strlit这个函数在idc及ida_bytes中都有定义，如下代码如示，idc中的定义实际上就是调用的ida_bytes中的定义函数。

#in idc.py file
def create_strlit(ea, endea):
    """
    Create a string.

    This function creates a string (the string type is determined by the
    value of get_inf_attr(INF_STRTYPE))

    @param ea: linear address
    @param endea: ending address of the string (excluded)
        if endea == BADADDR, then length of string will be calculated
        by the kernel

    @return: 1-ok, 0-failure

    @note: The type of an existing string is returned by get_str_type()
    """
    return ida_bytes.create_strlit(ea, 0 if endea == BADADDR else endea - ea, get_inf_attr(INF_STRTYPE))


#in ida_bytes file
def create_strlit(*args):
  """
  create_strlit(start, len, strtype) -> bool
  """
  return _ida_bytes.create_strlit(*args)

而在idc_bc695.py文件中，Makestr的定义如下：

def MakeStr(ea, endea): return create_strlit(ea, 0 if (endea) == ida_idaapi.BADADDR else endea-ea)

此函数中实际调用的是idc中的create_strlit，参数并不对应。所以可以将idc_bc695.py中的Makestr函数定义修改为：

def MakeStr(ea, endea): return create_strlit(ea, endea)
#or this
def MakeStr(ea, endea): return ida_bytes.create_strlit(ea, 0 if (endea) == ida_idaapi.BADADDR else endea-ea,get_inf_attr(INF_STRTYPE))