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MRJob and python - .csv file output for Reducer?

由 大憨熊 提交于 2019-12-13 05:05:14
问题 I'm using the MRJob module for python 2.7. I have created a class that inherits from MRJob, and have correctly mapped everything using the inherited mapper function. Problem is, I would like to have the reducer function output a .csv file...here is the code for the reducer: def reducer(self, geo_key, info_list): info_list.insert(0, ['Name,Age,Gender,Height']) for set in info_list: yield set Then i run in the command line---> python -m map_csv <inputfile.txt> outputfile.csv I keep getting this

Printing contents of dictionary in random order

由 匆匆过客 提交于 2019-12-13 04:58:51
问题 I am fairly new to Python. Infact, today is my first day in Python. I was following a tutorial and read about dictionary. But I don't know what is the order in which contents of a dictionary are displayed. Below is my code: dir = {'Z':1,'Y':3,'X':5,'V':7,'U':9,'T':2,'S':4,'R':6,'Q':8,'P':10}; print dir; and following is the Output: {'Q': 8, 'P': 10, 'S': 4, 'R': 6, 'U': 9, 'T': 2, 'V': 7, 'Y': 3, 'X': 5, 'Z': 1} Can anybody explain how I get this output and not the list in its original

Suppress system() output

由 左心房为你撑大大i 提交于 2019-12-13 04:53:09
问题 First off, I do mostly C#, .Net development so go easy on me if this is a stupid question. I am implementing an Ericcson open source project to convert an image to another format. The problem is that on conversion an output to a console happens as follows... 1 file(s) copied. I need to suppress this dialog that pops up. I just want to execute the system command with no output. I think I have isolated the area of the code causing this. void writeOutputFile(char *dstfile, uint8* img, uint8*

how do I echo an asterisks to an output

由 放肆的年华 提交于 2019-12-13 04:49:51
问题 The line in my shell script is OUTPUTMESSAGE="****Warning error $MYERRORNUM ****" echo $OUTPUTMESSAGE The asterisks are expanded to file names so it looks like file1 file2 file 3 file4 Warning error 404 file1 file2 file 3 file4 How do I prevent the * expansion in echo ? 回答1: Quote the variable name not only in assignment, but also in your echo command: OUTPUTMESSAGE="****Warning error $MYERRORNUM ****" echo "$OUTPUTMESSAGE" More information can be found in the answers to this question. 来源：

how to format output of expanded variable

由 …衆ロ難τιáo~ 提交于 2019-12-13 04:38:52
问题 I am trying to make a variable equal the output of query but so i can pipe to another command but its not working as i hoped. here is what i have. $office=get-aduser "samaccountname" -properties * | select office I already tried using sub-expressions $folder= get-aduser "samaccountname" -properties * | select '$(office)' and @{n='office';e={$_.office -replace '^office='$1'}} neither of which remove the @{office=} My goal is to get $office=office but instead i get $office=@{office=} How do you

data transferred in calling a user defined function

由 此生再无相见时 提交于 2019-12-13 04:34:08
问题 I need to analyze a big source code.Code contains several function calls. Depending upon the computation and communication between function calls, i will need to figure out the best configuration scheme for the overall execution of the source code. According to me , Data communicated in calling a function(if it is on different machine,server etc)=Input Data Size+Output Data Size for getting the input data size and output data size ,i think i should rewrite all functions to have variable

php sorter script only outputting the same data even though i am asking it to do diffrent

由 爱⌒轻易说出口 提交于 2019-12-13 04:23:26
问题 okay so i have made the following script to sort some data i have in this format 0|1|2 heres my script (this now works) <html> <body> <form method="post"> <div align="center"><textarea name="mp" cols="60" rows="10">0|1|2</textarea><br /> Delim: <input type="text" name="delim" value="|" size="1" /> data1: <input type="text" name="mail" value="0" size="1" /> data2: <input type="text" name="pwd" value="1" size="1" />  <input type="submit" value=" send " name="btn-submit" /> </div> </form> </body

Loop->Array Output

由 依然范特西╮ 提交于 2019-12-13 02:05:02
问题 I'm writing a loop to fill an array. I think I have the coding down, but when I run the compiled code through Java, it doesn't come out right in the command prompt. Here's the code: import java.util.Scanner; import java.io.*; public class Pr42 { public static void main(String[]args) throws IOException { int k,m,g; String n; //double g; Scanner input1=new Scanner(System.in); String[]Name=new String [5]; double[]Grade=new double[Name.length]; k=0; while (k<Name.length) { m=k+1; System.out.print

How to create a custom output format in Hadoop

由 亡梦爱人 提交于 2019-12-13 01:08:06
问题 I am trying to create a variation of the word count hadoop program in which it reads multiple files in a directory and outputs the frequency of each word. The thing is, I want it to output a word followed by the file name is came from and the frequency from that file. for example: word1 ( file1, 10) ( file2, 3) ( file3, 20) So for word1 (say the word "and"). It finds it 10 times is file1, 3 times in file2, ect. Right now it is outputing only a key value pair StringTokenizer itr = new

Hadoop producing no output

由 依然范特西╮ 提交于 2019-12-13 00:23:12
问题 I had a hadoop job running using the old API, I moved my implementation to the new API and am having problems running it. When the job runs no exceptions are thrown but I never get any output files produced. Under the old API it would produce output files with my sorted list of results. This is the job being run: Configuration config = new Configuration(); Job job = Job.getInstance(config, "sorting"); job.setOutputKeyClass(IntWritable.class); job.setOutputValueClass(IntWritable.class); job
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