That doesn't catch cases when the regular expression doesn't match and hence $1 might have a value assigned to it from a previous successful capturing regular expression match.

I humbly suggest either: 

print {$pro_list} $1, "\n" if $artist_link->url() =~ /(\d{9})/;

[download]
or 
if ($artist_link->url() =~ /(\d{9})/) {
    print {$pro_list} $1, "\n";
}

[download]

The curly braces around {$pro_list} disambiguates its use as the filehandle that is printed to.

In reply to Re^4: Page Scraping by shigetsu
in thread Page Scraping by 80degreez

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