code: # coding:utf-8
  #
  # The MIT License (MIT)
  #
  # Copyright (c) 2016-2019 yutiansut/QUANTAXIS
  #
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in all
  # copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  # SOFTWARE.
  
  import csv
  import json
  
  import numpy as np
  import pandas as pd
  
  
  def QA_util_to_json_from_pandas(data):
      """
      explanation:
          将pandas数据转换成json格式		
  
      params:
          * data ->:
              meaning: pandas数据
              type: null
              optional: [null]
  
      return:
          dict
  
      demonstrate:
          Not described
  
      output:
          Not described
      """
  
      """需要对于datetime 和date 进行转换, 以免直接被变成了时间戳"""
      if 'datetime' in data.columns:
          data.datetime = data.datetime.apply(str)
      if 'date' in data.columns:
          data.date = data.date.apply(str)
      return json.loads(data.to_json(orient='records'))
  
  
  def QA_util_to_json_from_numpy(data):
      pass
  
  
  def QA_util_to_json_from_list(data):
      pass
  
  
  def QA_util_to_list_from_pandas(data):
      """
      explanation:
           将pandas数据转换成列表		
  
      params:
          * data ->:
              meaning: pandas数据
              type: null
              optional: [null]
  
      return:
          list
  
      demonstrate:
          Not described
  
      output:
          Not described
      """
  
      return np.asarray(data).tolist()
  
  
  def QA_util_to_list_from_numpy(data):
      """
      explanation:
          将numpy数据转换为列表		
  
      params:
          * data ->:
              meaning: numpy数据
              type: null
              optional: [null]
  
      return:
          None
  
      demonstrate:
          Not described
  
      output:
          Not described
      """
  
      return data.tolist()
  
  
  def QA_util_to_pandas_from_json(data):
      """
      explanation:
          将json数据载入为pandas数据		
  
      params:
          * data ->:
              meaning: json数据
              type: null
              optional: [null]
  
      return:
          DataFrame
  
      demonstrate:
          Not described
  
      output:
          Not described
      """
      if isinstance(data, dict):
          return pd.DataFrame(data=[data, ])
      else:
          return pd.DataFrame(data=[{'value': data}])
  
  
  def QA_util_to_pandas_from_list(data):
      """
      explanation:
          将列表数据转换为pandas	
  
      params:
          * data ->:
              meaning: 列表数据
              type: list
              optional: [null]
  
      return:
          DataFrame
  
      demonstrate:
          Not described
  
      output:
          Not described
      """
  
      if isinstance(data, list):
          return pd.DataFrame(data=data)
  
apis: pandas.DataFrame numpy.asarray