python implements txt file format conversion to arff format

  • 2020-10-23 20:09:47
  • OfStack

This article shares the specific code of python to convert txt file format to arff format for your reference. The specific content is as follows

The default is to read the file out of the character, so there is a bit of a problem with the conversion, but it can still be used.

The file requires the first line to be the name of your property, followed by the number.


import sys 
import re 
 
relationname = "" 
filename = "" 
 
if (len(sys.argv)<2): 
  print("Usage:\npython arff.py MyRelationName filename.txt") 
else: 
  relationname = sys.argv[1] 
  filename = sys.argv[2] 
 
 
class Arff: 
  def __init__(self, r, f): 
    self.relationname = r if r is not "" else "MachineLearning" 
    f = f if f is not "" else "MMG_data.txt" 
    self.file1 = open(f, 'r') 
    self.data = [] 
    self.names = [] 
    self.parseData() 
    self.writeToFile() 
 
  def parseData(self): 
    firstLine = True 
    for line in self.file1.readlines(): 
      if not firstLine: 
        try: 
          line = line.replace("\n", "") 
          words = line.split(" ") 
        except ValueError: 
          print("cant parse file!!") 
        self.data.append(words) 
      else: 
        firstLine = False 
        line = line.replace("\n", "") 
        words = line.split(" ") 
        self.names = words 
 
  def getType(self, value): 
    v = "" 
    if(type(value) == type(1)): 
      v = "numeric" 
    elif(type(value) == type(1.0)): 
      v = "numeric" 
    elif(re.match("[0-9]{4}\-[0-9]{2}\-[0-9]{2}\s[0-9]{2}\:[0-9]{2}\:[0-9]{2}", value)): 
      v = "date " + "yyyy-MM-dd HH:mm:ss" 
    elif(type(value) == type("string")): 
      v = "string" 
    elif(v == ""): 
      print("Data type "+value+" not supported yet.") 
    return v 
 
  def writeToFile(self): 
    values = self.data[0] 
    file2 = open("Dexhunter_test_result.arff", 'w+' ) 
 
    self.relationname+="\n" 
 
    relationString = '@RELATION ' + self.relationname 
    file2.write(''+relationString+'') 
 
    for i in range(len(self.names)): 
      str2 = "@ATTRIBUTE " + self.names[i] + " " + self.getType( values[i] ) + "\n" 
      file2.write(''+str2+'') 
    file2.write('''''@DATA\n''') 
 
    for line in self.data: 
      try: 
        file2.write(",".join(line)+"\n") 
      except UnicodeEncodeError: 
          print("cant write Data to file!!") 
 
Arff(relationname, filename) 

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