Add an export as CSV feature of the validation errors

mass_validate_email.py

@@ -317,7 +317,11 @@ def mass_validate_email(mail, simple=False):
 
 if __name__ == '__main__':
 
-    from optparse import OptionParser
+    from optparse import OptionParser, OptionGroup
+
+    # Default options
+    default_output_delimiter = ";"
+    default_output_quotechar = '"'
 
     parser = OptionParser()
     # options
@@ -391,6 +395,33 @@ if __name__ == '__main__':
         help="Read emails addresses to validate from from"
     )
 
+    output_opts = OptionGroup(parser, u"Output options")
+    output_opts.add_option(
+        '-o',
+        '--output-file',
+        action="store",
+        type='string',
+        dest="output_file",
+        help="Write emails addresses validation result as a CSV file"
+    )
+    output_opts.add_option(
+        '--delimiter',
+        action='store',
+        type='string',
+        dest='output_delimiter',
+        help="CSV ouput file delimiter (Default: %s)" % default_output_delimiter,
+        default=default_output_delimiter
+    )
+    output_opts.add_option(
+        '--quotechar',
+        action='store',
+        type='string',
+        dest='output_quotechar',
+        help="CSV ouput file quote character (Default: %s)" % default_output_quotechar,
+        default=default_output_quotechar
+    )
+    parser.add_option_group(output_opts)
+
     (opts, emails) = parser.parse_args()
 
     # Enable and configure logging
@@ -417,6 +448,10 @@ if __name__ == '__main__':
     if not emails:
         parser.error('You must specify emails address as arguments')
 
+    # If output is enabled, import csv library
+    if opts.output_file:
+        import csv
+
     # Configure other options from command line arguments
     options.raiseonerror = True
     options.debugsmtp = opts.debugsmtp
@@ -469,5 +504,12 @@ if __name__ == '__main__':
     else:
         logging.info('All %s emails addresses provided are valid.', len(emails))
 
+    if opts.output_file:
+        logging.info('Write emails validation result to file %s', opts.output_file)
+        with open(opts.output_file, 'w') as fd:
+            csv_output = csv.writer(fd, delimiter=opts.output_delimiter, quotechar=opts.output_quotechar)
+            for email in not_validated:
+                csv_output.writerow([email, not_validated[email].error_msg])
+
     # Adapt exit code on validation result
     sys.exit(1 if not_validated else 0)