file.py 文件源码

def append(self, text):
        try:
            from Naked.toolshed.system import file_exists
            if not file_exists(self.filepath): #confirm that file exists, if not raise IOError (assuming that developer expected existing file if using append)
                raise IOError("The file specified for the text append does not exist (Naked.toolshed.file.py:append).")
            with open(self.filepath, 'a') as appender:
                appender.write(text)
        except UnicodeEncodeError as ue:
            self.append_utf8(text) #try writing as utf-8
        except Exception as e:
            if DEBUG_FLAG:
                sys.stderr.write("Naked Framework Error: Unable to append text to the file with the append() method (Naked.toolshed.file.py).")
            raise e

    #------------------------------------------------------------------------------
    # [ append_utf8 method ]
    #   Text writer that appends text to existing file with utf-8 encoding
    #   Tests: test_IO.py :: test_file_utf8_readwrite_append
    #------------------------------------------------------------------------------