在python正则表达式中消除逗号和数千位数字之间的空格

Question

我正在尝试修复一些数据。 它几乎有600万个单词，但是我发现其中一些单词已经用逗号分隔，然后用数字隔开。 例如：

1, 000, 000 cases were produced of this, however, that is not important.

我正在使用：

changed = re.sub(r', \d{3}', r'\d{3}',original.strip())

但这将其更改为：

1,\d{3},\d{3} cases were produced of this, however, that is not important.

因此它可以识别需要更改的内容，而不是需要更改的内容

Answer 1

您需要捕获组中的数字，然后在替换中引用该组。

>>> re.sub(r', (\d{3})', r'\1',original.strip())
'1000000 cases were produced of this, however, that is not important.'