Recursively dump parsed eml file information into a single text file for analysis

dump_eml.py

#! /usr/bin/python
# Requirement: run python -m pip install eml_parser
# Syntax: python.exe .\dump_eml.py . .\dumpfile.txt

import os,sys,datetime
import eml_parser,json

separator = "\\"
def json_serial(obj):
  if isinstance(obj, datetime.datetime):
      serial = obj.isoformat()
      return serial


ep = eml_parser.EmlParser(include_raw_body=True,include_attachment_data=True)
with open(sys.argv[2],"wb+") as output:
  def dump(d,f):
    with open(d+separator+f,"rb") as eml:
      try:
        output.write(json.dumps(ep.decode_email_bytes(eml.read()),default=json_serial,indent=4,sort_keys=True).encode("utf-8"))
      except Exception as e:
      	print(e)
      	print("Error with:"+d+separator+f)
      output.write(("\n+"+("-"*80)+"+\n").encode("utf-8"))
  for directory, dirnames, filenames in os.walk(sys.argv[1]):
    for file in filenames:
      if file.lower().endswith(".eml"):
      	dump(directory,file)
      	print("Finished: "+directory+separator+file)