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POTranslating Perl to Python
 

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  1. POTranslating Perl to Python
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    <p>I found this Perl script while <a href="https://stackoverflow.com/questions/18671/quick-easy-way-to-migrate-sqlite3-to-mysql/25860">migrating my SQLite database to mysql</a></p> <p>I was wondering (since I don't know Perl) how could one rewrite this in Python?</p> <p>Bonus points for the shortest (code) answer :)</p> <p><strong>edit</strong>: sorry I meant shortest code, not strictly shortest answer</p> <pre><code>#! /usr/bin/perl while ($line = &lt;&gt;){ if (($line !~ /BEGIN TRANSACTION/) &amp;&amp; ($line !~ /COMMIT/) &amp;&amp; ($line !~ /sqlite_sequence/) &amp;&amp; ($line !~ /CREATE UNIQUE INDEX/)){ if ($line =~ /CREATE TABLE \"([a-z_]*)\"(.*)/){ $name = $1; $sub = $2; $sub =~ s/\"//g; #" $line = "DROP TABLE IF EXISTS $name;\nCREATE TABLE IF NOT EXISTS $name$sub\n"; } elsif ($line =~ /INSERT INTO \"([a-z_]*)\"(.*)/){ $line = "INSERT INTO $1$2\n"; $line =~ s/\"/\\\"/g; #" $line =~ s/\"/\'/g; #" }else{ $line =~ s/\'\'/\\\'/g; #' } $line =~ s/([^\\'])\'t\'(.)/$1THIS_IS_TRUE$2/g; #' $line =~ s/THIS_IS_TRUE/1/g; $line =~ s/([^\\'])\'f\'(.)/$1THIS_IS_FALSE$2/g; #' $line =~ s/THIS_IS_FALSE/0/g; $line =~ s/AUTOINCREMENT/AUTO_INCREMENT/g; print $line; } } </code></pre> <p>Some additional code was necessary to successfully migrate the sqlite database (handles one line Create table statements, foreign keys, fixes a bug in the original program that converted empty fields <code>''</code> to <code>\'</code>. </p> <p>I <a href="https://stackoverflow.com/questions/18671/quick-easy-way-to-migrate-sqlite3-to-mysql/1067365#1067365">posted the code on the migrating my SQLite database to mysql Question</a></p>
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    1. COIs this that hard to read? This is probably the most readable perl program ever written.
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    2. COsays a lot about perl ;)
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    3. CO@John Kugelman I think it would have been even more readable without the `$line` variable.
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      1. USSinan Ünür
 

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