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Computer Science Annotate code: os.chdir('Use your path here') os.getcwd() emails = [] readfile= open(r'fraud_emails.txt', 'r'). read() sep_emails = resplit(r'From r', readfile) sep_emails.pop(0) for item in sep_emails: email_dict = {}    sender = re.search(r'From:.*', item)    if sender != None: s_email = research(r'\w\S*@.*\w', sender.group()) else: s_email = None s_name = None    if s_email != None: sender_email = s_email.group() else: sender_email = None emails_dict['sender_email'] = sender_email    if s_name != None: sender_name = re.sub('\s*<', '',re.sub(':\s*','', s_name.group())) else: sender_name = None email_dict['sender_name'] = sender_name    recipient = re.search(r'To:.*', item)

Computer Science Annotate code: os.chdir('Use your path here') os.getcwd() emails = [] readfile= open(r'fraud_emails.txt', 'r'). read() sep_emails = resplit(r'From r', readfile) sep_emails.pop(0) for item in sep_emails: email_dict = {}    sender = re.search(r'From:.*', item)    if sender != None: s_email = research(r'\w\S*@.*\w', sender.group()) else: s_email = None s_name = None    if s_email != None: sender_email = s_email.group() else: sender_email = None emails_dict['sender_email'] = sender_email    if s_name != None: sender_name = re.sub('\s*<', '',re.sub(':\s*','', s_name.group())) else: sender_name = None email_dict['sender_name'] = sender_name    recipient = re.search(r'To:.*', item)

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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01 :54 :19

Computer Science

Annotate code:

os.chdir('Use your path here')
os.getcwd()

emails = []

readfile= open(r'fraud_emails.txt', 'r'). read()

sep_emails = resplit(r'From r', readfile)
sep_emails.pop(0)

for item in sep_emails:
email_dict = {}
  
sender = re.search(r'From:.*', item)
  
if sender != None:
s_email = research(r'\w\S*@.*\w', sender.group())
else:
s_email = None
s_name = None
  
if s_email != None:
sender_email = s_email.group()
else:
sender_email = None
emails_dict['sender_email'] = sender_email
  
if s_name != None:
sender_name = re.sub('\s*<', '',re.sub(':\s*','', s_name.group()))
else:
sender_name = None
email_dict['sender_name'] = sender_name
  
recipient = re.search(r'To:.*', item)

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