使用 python 从 txt 文件中读取电子邮件

Question

我有一个带有电子邮件的 TXT 文件，例如：

From r Wed Oct 30 21:41:56 2002
Return ...
...
From r Thu Oct 31 08:11:39 2002
Return ...
...

我想将每个 email 提取到一个数组中，例如：

["From r Wed Oct 30 21:41:56 2002 Return ...", "From r Thu Oct 31 08:11:39 2002 Return ...", ..., "From r ..."]

我正在使用 python

 with open(self.file, encoding="utf8", errors='ignore') as data_file:
     lines = ''

     first_line = True

     for line in data_file:
         if line.startswith("From r") and not first_line:
             emails.append(lines)
             lines = ''
          else:
              first_line = False
          lines = lines + line

Answer 1

Assuming the first line of every email begins with From r , we can loop over each line of the email, adding a new entry to the list of emails every time we see From r , and concatenating every line after that to the "current" email由索引i跟踪。

emails = []
with open('emails.txt') as f:
    i = -1
    for line in f:
        if line.startswith('From r'):
            emails.append(line)
            i += 1
        else:
            emails[i] += line

print(emails)

输出：

['From r Wed Oct 30 21:41:56 2002\nReturn ...\n...\n', 'From r Thu Oct 31 08:11:39 2002\nReturn ...\n...\n']

Answer 2

尝试这个：

emails_list = []
email = ""
with open("full/path/to/file", "r") as f:
    email += f.readline()
    for l in f.readlines():
        l = l.strip()
        if not l.startswith("From r"):
            email += " " + l
        else:
            emails_list.append(email)
            email = l
    else:
        emails_list.append(email)

print(emails_list)