Question

我有一个由'|'分隔的CSV。我正在尝试读取CSV，按第8列排序，并将排序后的数据作为标准CSV输出到stdout。问题是输入CSV中的某些行没有8列。可以完全跳过那些没有列8的行。现在当它遇到没有第8列的行时，它会抛出错误“列表索引超出范围”。如果我能让它继续并忽略那一行它将是完美的。

任何帮助将不胜感激。当然愿意完全改变代码块。

with open(sys.argv[1]) as openFile:
    reader = csv.reader((x.replace('\0','') for x in openFile), delimiter='|')
    col = 8
    sortedReader = sorted(reader, key=lambda k: (k[col] is None, k[col] == "", k[col]), reverse=True) # This was my attempted solution found on Google/StackOverflow.  Does not work. 
    csvout = csv.writer(sys.stdout, delimiter=',')
    for row in sortedReader:
        try:
            csvout.writerow(row)
        except:
            sys.stderr.write('[!] Error in row')
            sys.stderr.write(row)
            continue

Answer 1

只需在排序前过滤行

$args = array(
    'post_type' => 'knowledgebase',
    'tax_query' => array(
        array(
            'taxonomy' => 'knowledgebase-categories',
            'field'    => 'slug',
            'terms'    => 'knowledgebase-terms',
        ),
    ),
);
$query = new WP_Query( $args );

Python sorted（）使用空coloumn跳过行

1 个答案: