old_contents: class SelectParameters(object):  # Select API中参数名常量，参数名是大小写敏感的。具体含义参加api.py中的介绍
      CsvHeaderInfo = 'CsvHeaderInfo'
      CommentCharacter = 'CommentCharacter'
      RecordDelimiter = 'RecordDelimiter'
      OutputRecordDelimiter = 'OutputRecordDelimiter'
      FieldDelimiter = 'FieldDelimiter'
      OutputFieldDelimiter = 'OutputFieldDelimiter'
      QuoteCharacter = 'QuoteCharacter'
      SplitRange = 'SplitRange' 
      LineRange = 'LineRange'
      CompressionType = 'CompressionType'
      KeepAllColumns = 'KeepAllColumns'
      OutputRawData = 'OutputRawData'
      EnablePayloadCrc = 'EnablePayloadCrc'
      OutputHeader = 'OutputHeader'
      SkipPartialDataRecord = 'SkipPartialDataRecord'
      MaxSkippedRecordsAllowed = 'MaxSkippedRecordsAllowed'
      AllowQuotedRecordDelimiter = 'AllowQuotedRecordDelimiter'
      Json_Type = 'Json_Type'
      ParseJsonNumberAsString = 'ParseJsonNumberAsString'
      OverwriteIfExists = 'OverwriteIfExists'
      AllowQuotedRecordDelimiter = 'AllowQuotedRecordDelimiter'
  
  class SelectJsonTypes(object):  # Select JSOn API中 Json_Type的合法值，大小写敏感。
      DOCUMENT = 'DOCUMENT'
      LINES = 'LINES'
new_contents: # -*- coding: utf-8 -*-
  class SelectParameters(object):  # Select API中参数名常量，参数名是大小写敏感的。具体含义参加api.py中的介绍
      CsvHeaderInfo = 'CsvHeaderInfo'
      CommentCharacter = 'CommentCharacter'
      RecordDelimiter = 'RecordDelimiter'
      OutputRecordDelimiter = 'OutputRecordDelimiter'
      FieldDelimiter = 'FieldDelimiter'
      OutputFieldDelimiter = 'OutputFieldDelimiter'
      QuoteCharacter = 'QuoteCharacter'
      SplitRange = 'SplitRange' 
      LineRange = 'LineRange'
      CompressionType = 'CompressionType'
      KeepAllColumns = 'KeepAllColumns'
      OutputRawData = 'OutputRawData'
      EnablePayloadCrc = 'EnablePayloadCrc'
      OutputHeader = 'OutputHeader'
      SkipPartialDataRecord = 'SkipPartialDataRecord'
      MaxSkippedRecordsAllowed = 'MaxSkippedRecordsAllowed'
      AllowQuotedRecordDelimiter = 'AllowQuotedRecordDelimiter'
      Json_Type = 'Json_Type'
      ParseJsonNumberAsString = 'ParseJsonNumberAsString'
      OverwriteIfExists = 'OverwriteIfExists'
      AllowQuotedRecordDelimiter = 'AllowQuotedRecordDelimiter'
  
  class SelectJsonTypes(object):  # Select JSOn API中 Json_Type的合法值，大小写敏感。
      DOCUMENT = 'DOCUMENT'
      LINES = 'LINES'
  
subject: add encoding