用於使用imap下載新電子郵件附件的Python腳本

Question

導入電子郵件導入imaplib import os

class FetchEmail():

    connection = None
    error = None
    mail_server="outlook.office365.com"
    username="me@domain.com"
    password="'Password'"
self.save_attachment(self,msg,download_folder)
def __init__(self, mail_server, username, password):
    self.connection = imaplib.IMAP4_SSL(mail_server)
    self.connection.login(username, password)
    self.connection.select(readonly=False) # so we can mark mails as read

def close_connection(self):
    """
    Close the connection to the IMAP server
    """
    self.connection.close()

def save_attachment(self, msg, download_folder="/tmp"):
    """
    Given a message, save its attachments to the specified
    download folder (default is /tmp)

    return: file path to attachment
    """
    att_path = "No attachment found."
    for part in msg.walk():
        if part.get_content_maintype() == 'multipart':
            continue
        if part.get('Content-Disposition') is None:
            continue

        filename = part.get_filename()
        att_path = os.path.join(download_folder, filename)

        if not os.path.isfile(att_path):
            fp = open(att_path, 'wb')
            fp.write(part.get_payload(decode=True))
            fp.close()
    return att_path

def fetch_unread_messages(self):
    """
    Retrieve unread messages
    """
    emails = []
    (result, messages) = self.connection.search(None, 'UnSeen')
    if result == "OK":
        for message in messages[0].split(' '):
            try: 
                ret, data = self.connection.fetch(message,'(RFC822)')
            except:
                print ("No new emails to read.")
                self.close_connection()
                exit()

            msg = email.message_from_string(data[0][1])
            if isinstance(msg, str) == False:
                emails.append(msg)
            response, data = self.connection.store(message, '+FLAGS','\\Seen')

        return emails

    self.error = "Failed to retreive emails."
    return emails

我目前有上面的代碼，在第12行它說自我沒有定義。 這可能是造成這種錯誤的原因。 我認為self定義在init函數中的那一行下面。

Answer 1

好吧，只要查看代碼，我就可以從一開始就看到不一致的縮進 - 這可能是你的主要問題。 嘗試在FetchEmail類中定義您的函數。

其次，將init函數更改為：

def __init__(self, mail_server=mail_server, username=username, password=password):

這實際上只是將默認值應用於init函數。 最后，對於類中的save_attachment函數/ save_attachment(self, msg, download_folder) ，您將需要在init函數內或scipt的頂級函數內調用它（在類定義之外）

• 在類定義中（在init中）： self.save_attatchment(msg,download_folder)
• 在頂層：在使用fe = FetchEmail()創建FetchEmail對象之后，您可以像這樣調用save_attachment函數： attatchment_path = fe.save_attachment()

這是我實現init的方式 ：

class FetchEmail():
    def __init__(self,
        mail_server="outlook.office365.com", 
        username="rnandipati@jmawireless.com",
        password="'RNjma17!'"):

        self.error = None
        self.connection = None
        self.mail_server = mail_server
        self.username = username
        self.password = password
        self.connection = imaplib.IMAP4_SSL(mail_server)
        self.connection.login(username, password)
        self.connection.select(readonly=False) # so we can mark mails as readread

    def close_connection(self): ...

請注意，如果你這樣做，只需記住將所有函數的引用更改為self.password ， self.error等。

我不知道這是否有效。 也許看看這個 。 我認為這是你最好的選擇。

祝一切順利！