assuming you have your file in an array  @test(for example purposes) you could do someting pretty simple: 

my $end = @test;
my $cnt = 0;
until ($cnt == $end)
    
    if (($test[$cnt] =~ /^>>>\s/) && ($test[$cnt+1] !~ /^>>\s/)){
        $tst[$cnt] =~ s/^>>>/PYTHON_PROMPT/;
    }
    $cnt++;
}

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In reply to Re: Using a regex to catch interpreters by magnus
in thread Using a regex to catch interpreters by eastcoastcoder

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