Compared to 2_RemoteCodePkg.py, some of the parameters in the custom part are modified as follows:
Configuration Item
Description
Application
Modify `Command` to `sumnum.py`.
InputMapping
Input mapping.
`SourcePath` remote storage address: modify this address to the path of the **input** folder in "Preparations". For more information, please see Getting COS Endpoints.
`DestinationPath` local directory: retain the original setting for the time being.
OutputMapping
Output mapping.
`SourcePath` local directory: retain the original setting for the moment.
`DestinationPath` remote storage address: modify this address to the path of the **output** folder in "Preparations". For more information, please see Getting COS Endpoints.
sumnum.py is composed as below:
Open input/number.txt, add up all numbers in each row, and write the result into output/result.txt.
import os
inputfile ="/data/input/number.txt"
outputfile ="/data/output/result.txt"
def readFile(filename):
total =0
fopen = open(filename, 'r')
foreachLinein fopen:
total += int(eachLine)
fopen.close()
print "total = ",total
fwrite = open(outputfile, 'w')
fwrite.write(str(total))
fwrite.close()
print("Local input file is ",inputfile)
readFile(inputfile)
Submitting job
Run the following command to run the Python script.
The demo encapsulates the job submission process by using Python scripts and the BatchCompute command line tool.
python 3_StoreMapping.py
The returned result is as follows, indicating that the job is successfully submitted:
1. Log in to the COS Console and click Bucket List on the left sidebar.
2. Select the ID of the created bucket, click Files, and select output as shown below:
BatchCompute copies the output data from the local directory to the remote directory. The execution results of 3_StoreMapping.py are stored in result.txt, which is automatically synced to COS.
