使用正則表達式從CSV刪除行內的換行符

Question

您好，我有這段文字：

1,0.00,,2.00,10,"Block. CertNot Valid.
Query with me",2013-06-20,0,0.00

這是CSV文件中的兩行，但實際上是一行數據，我想刪除斷行，然后使用正則表達式將該行放在一行中。

我試過了： (\\")(.*)(\\n)(.*)(\\") ，但是它不起作用。

Answer 1

別。 無需刪除換行符。

使用csv模塊讀取CSV文件，它將正確處理換行符：

import csv

with open(csvfilename, 'rb') as infile:
    reader = csv.reader(infile)
    for row in reader:
        print repr(row[5])

將打印：

'Block. CertNot Valid.\nQuery with me'

對於那一行。

這行得通，因為該列已正確引用。

Answer 2

您可以在此處查看結果： https : //www.debuggex.com/r/2_X5N-wTLZ2laJKh

控制台輸出：

>>> regex = re.compile("\"(.+?)\"",re.MULTILINE|re.DOTALL|re.VERBOSE)
>>> regex.findall(string)
[u'Block. CertNot Valid.\nQuery with me', u'test\naaa', u'bbb\nvvvv']

“字符串”值是：

1,0.00,,2.00,10,"Block. CertNot Valid.
Query with me",2013-06-20,0,0.00

1,0.00,,2.00,10,"test
aaa",2013-06-20,0,0.00

1,0.00,,2.00,10,"bbb
vvvv",2013-06-20,0,0.00