KeywordsGID large data processing technology realization
Python handles large data, and friends who need it can refer to it.
The recent big data competition is very hot, I did not learn how long python, want to try to write, just realize the data processing, mainly used dict,list,file knowledge.
Also have to say, I also use MATLAB to achieve, but run to almost two minutes, but the python seconds processing, there is wood, it shows Python processing text function powerful.
Data format in file:
ClientID shopingid num Date
1111000 3873 2 April 5
Clientinfo = []shopinginfo = {}month={}day={}shopidflag = 0clientstartflag = 0total={}tmpclientid= ' output= open (' f:/ A.txt ', ' a ') with the open (' F:/s.txt ', ' R ') as Data_file:for lineinfo in data_file:lineinfo = Lineinfo.split () ClientID = Lineinfo[0] Shopingid = lineinfo[1] num=[] Num.append (lineinfo[2)) data = lineinfo[3] data = data[:-1] data = data.split (' Month ' ) monthvar=[] Monthvar.append (data[0]) dayvar=[] Dayvar.append (data[1)) if ClientID in Clientinfo and Shopingid in Shopinginfo and Int (data[0]) >=6:shopinginfo[shopingid].append (lineinfo[2)) Month[shopingid].append (Data[0]) Day [Shopingid].append (data[1]) elif ClientID in Clientinfo and Shopingid not in Shopinginfo and int (data[0]) >=6: Shopinginfo[shopingid]=num month[shopingid]= monthvar Day[shopingid] = Dayvar elif ClientID not in Clientinfo: #if Clientstartflag = = 1:clientflag = 0 shopinglink= ' for (K, V) in Shopinginfo.items (): total={} vote=0 to I in V:if I in total:to Tal[i]+=1 Else:total[i]=1 for Var in total:if var = = ' 0 ': vote + = Total[var] elif var = ' 1 ': vote = 0 break elif var = ' 2 ': vote + = total[var]*2 Else:vote + = total[var]*3 if vote >= 3:if Clientflag = = 0:output.write (tmpclientid+ ' t ') clientflag =1 ' shopinglink+=k+ ', ' if Clientflag = 1: Output.write (Shopinglink.strip (', ') + ' \ r \ n ') shopinginfo={} month ={} Day ={} clientinfo=[] Tmpclientid=clientid Clientinfo.append (ClientID) shopinginfo[shopingid]=num Month[shopingid] = Monthvar Day[shopingid] = Dayvar Shopinglink = ' for (k, V) in Shopinginfo.items (): For I-v:if i in Total:total[i]+=1 else:total[i]=1 total={} vote=0 to I in v:if I in t Otal:total[i]+=1 Else:total[i]=1 for var in total:if var = = ' 0 ': Vote + + Total[var] elif var = 1 ': Vote = 0 break elif var = = ' 2 ': Vote + total[var]*2 Else:vote = total[var]*3 if vote >= 3:if clientflag = 0:clientflag =1 ', ' if Clientflag = = 1:output.write (tmpclientid+ ' t ') output.write (Shopinglink.strip (', ')) Data_file.close () Output.close ( )
guess you like:
1. Large http://www.aliyun.com/zixun/aggregation/14345.html "> Interpretation of data Processing and analysis methods
2. "Dry" with R for large data processing set
3. Youku introduced spark to deepen large data processing
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.