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From: ram@zedat.fu-berlin.de (Stefan Ram)
Newsgroups: comp.lang.python
Subject: Re: Extract lines from file, add to new files
Date: 11 Jan 2024 18:41:52 GMT
Organization: Stefan Ram
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Expires: 1 Dec 2024 11:59:58 GMT
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Rich Shepard <rshepard@appl-ecosys.com> writes:
>separate names and email addresses

  (Warning: execution of the following script will overwrite
  [DELETE!] files opened with 'w'!)

# create source
data = '''Calvin\ncalvin@example.com\nHobbs\nhobbs@some.com
Nancy\nnancy@herown.com\nSluggo\nsluggo@another.com'''
fn = "data20240111192219+0100"
with open( fn, "w" )as sink: print( data, file=sink )

# split source into two files
with open( fn )as source: file = source.read()
lines = file.split( '\n' )[ :-1 ]
with open( 'salutation.txt', 'w' )as f: print( lines[ 0::2 ], file=f )
with open( 'emails.txt', 'w' )as f: print( lines[ 1::2 ], file=f )

# show the two result files
with open( 'salutation.txt' )as file: print( file.read() )
with open( 'emails.txt' )as file: print( file.read() )