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Python把csv数据写入list和字典类型的变量脚本方法

2021-03-05 00:37坏蛋是我 Python

今天小编就为大家分享一篇Python把csv数据写入list和字典类型的变量脚本方法,具有很好的参考价值,希望对大家有所帮助。一起跟随小编过来看看吧

如下所示:

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#coding=utf8
import csv
import logging
logging.basicConfig(level=logging.DEBUG,
        format='%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s',
        datefmt='%a, %d %b %Y %H:%M:%S',
        filename='readDate.log',
        filemode='w')
'''
该模块的主要功能,是根据已有的csv文件,
通过readDataToDicl函数,把csv中对应的部分,
写入字典中,每个字典当当作一条json数据
'''
class GenExceptData(object):
  def __init__(self):
    try:
      #存放csv中读取的数据
      self.mdbuffer=[]
      #打开csv文件,设置读的权限
      csvHand=open("20170510174450.csv","r")
      #创建读取csv文件句柄
      readcsv=csv.reader(csvHand)
      #把csv的数据读取到mdbuffer中
      for row in readcsv:
          self.mdbuffer.append(row)
      #把数据穿件为为字典类型的
      #self.readDataToList()
      #保存文件
    except Exception,e:
      logging.error("Read Excel error:"+e)
    finally:
      #关闭csv文件
      csvHand.close()
 
  def readDataToList(self):
    try:
      #获取mdbuffer中的元素个数
      rowNumber=len(self.mdbuffer)
      #设置当前行号
      currentrow=1
      #设置json数据的属性值
      propertyJson={}
      #propertyJsonList=[]
      #count=0
      #读取列表中的元素 
      dataList=[]
      try:
        for row in range(1,rowNumber):
          #创建一个临时变量用来存取一次循环的属性键值
          temp={}
          
          #获取列表中一个元素
          item=self.mdbuffer[row]
          #获取当前元素,当前元素代表的是每个
          #事件起始的位置
          currentItem=self.mdbuffer[currentrow]
          #获取serviceId并进行解码
          serviceId= currentItem[2].decode("gbk")
          #获取属性并进行解码,把解码的值存入propertyName
          propertyName=item[3].decode("gbk")
          #获取属性值并进行解码,把解码的值存入propertyValue
          propertyValue=item[4].decode("gbk")
          try:
            #判断埋点事件与serviceId是否相等
            if item[0]==currentItem[0] and item[2]==currentItem[2]:
              #把serviceId方式字典propertyJson中
              propertyJson["serviceId"]=serviceId
              #把属性/值对放入temp字典中                        
              temp[propertyName]=propertyValue
              #调用字典的update函数,把temp中的键值对
              #添加到 propertyJson字典中
              propertyJson.update(temp)
              #使用continue,如果为if条件为true则循环执行if语句模块
              continue
            else:
              #把行号设置为当前行
              currentrow=row
              #把当前的属性解码放入propertyName         
              propertyName=currentItem[3].decode("gbk")
              #把当前的属性值解码放入propertyName
              propertyValue=currentItem[4].decode("gbk")
              #把serviceId方式字典propertyJson中
              propertyJson["serviceId"]=serviceId 
              #把属性/值对放入propertyJson字典中
              propertyJson[propertyName]=propertyValue
              #propertyJsonList.append(propertyJson)
              dataList.append(propertyJson)
              '''
              在这说下:
              propertyJson.clear()与propertyJson={}的区别:
              propertyJson.clear()是删除字典的值,不创建引用,会改变字典本身的值;
              propertyJson={}是创建新的引用,字典的中的值不发现变化;
              如果想让 self.dataDic.append(propertyJson)该语句执行成功,而且添加每次循环的值,
              需要使用propertyJson={}方法;
              如果使用propertyJson.clear(),只会把最后一次propertyJson存储的值,添加到self.dataDic中
              '''
              propertyJson={}
          except Exception,e:
            logging.error("Get Property Json Error:"+e)
            print "Get Property Json Error:",e
      except Exception,e:
        logging.error("Get Date Error:"+e)
        print "Get Date Error:",e
      return dataList  
    except Exception,e:
      logging.error("Reading Data TO Dic Error:"+e)
      print "Reading Data TO Dic Error:",e
    
  def getAllServiceId(self):
    try:
      dataList=self.readDataToList()
      serList=[item["serviceId"] for item in dataList if item["serviceId"] ]
      serList=list(set(serList))
      return serList
    except Exception,e:
      logging.error("Create ServiceId List Error:"+e)
      print "Create ServiceId List Error:"+e
                    
  def oupPutData(self):
    try:
      dataList=self.readDataToList()
      for item in dataList:    
          print "{"
          for key,val in item.items():
            print key,":",val
          print "}"
          print "#"*50
    except Exception,e:
      logging.error("OutPut Data Error:"+e)
      print "OutPut Data Error:"+e
  
   
  def createDataDic(self):
    try:
      dataDic={}
      
      dataList=self.readDataToList()
      count=0
      for item in dataList:
        if item["serviceId"]==u"pageview":
          count+=1
      print count
          
      serviceIdList=self.getAllServiceId()
      if len(serviceIdList)>0 and len(dataList)>0:
        for serviceId in serviceIdList:
          sameServiceidJosnList=[]
          for item in dataList:         
            itemServiceId=item["serviceId"]
            if itemServiceId:
              if serviceId==itemServiceId:
                sameServiceidJosnList.append(item)                              
            else:
              print "ServiceId is null"
          dataDic[serviceId]=sameServiceidJosnList
          
      else:
        print "seriviceIdList or dataList is null"
      return dataDic
      '''
      for key,val in dataDic.items():
        print key,len(val)
        print "*"*50
        for item in val:
          print "{"
          for ke,va in item.items():
            print ke,":",va
          print "}"
        print "-"*50
      '''
    except Exception,e:
      print "Create Data Dictionary Error:",e
    
def test():
  gen =GenExceptData()
  gen.oupPutData()
  
if __name__=="__main__":
  test()

以上这篇Python把csv数据写入list和字典类型的变量脚本方法就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持服务器之家。

原文链接:https://blog.csdn.net/henni_719/article/details/74990209

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