cpython/Doc/includes/email-headers.py

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# Import the email modules we'll need
from email.parser import Parser
# If the e-mail headers are in a file, uncomment this line:
#headers = Parser().parse(open(messagefile, 'r'))
# Or for parsing headers in a string, use:
headers = Parser().parsestr('From: <user@example.com>\n'
'To: <someone_else@example.com>\n'
'Subject: Test message\n'
'\n'
'Body would go here\n')
# Now the header items can be accessed as a dictionary:
print('To: %s' % headers['to'])
print('From: %s' % headers['from'])
print('Subject: %s' % headers['subject'])