Email Python2.7/Windows：发送SMTP电子邮件的非常奇怪的行为

这完全把我难住了。下面是两个发送电子邮件的简单例程。第一个成功，第二个成功，但有一些小的异常捕获锁定，Python Cntl-C不会终止会话。此外，我已确定用于主题行的报价类型很重要。所以如果我使用

msg['Subject'] = "Random text"

电子邮件将失败，但是

msg['Subject'] = 'Random text'

这成功了

有人能给黑暗照点光吗

例1

import smtplib
from email.mime.text import MIMEText
addr = "10.0.0.178"
From = "me@somewhere.net"
recip = ["me@somewherelese.net","foo@bar.net"]
msg = "Message Body"
send_email(recip,"Subject Line",msg)

def send_email(To,Subj,Mess):
    msg = MIMEText(Mess)
    msg["Subject"] = Subj
    msg['From'] = From
    s = smtplib.SMTP(addr)
    for entry in To:
        msg['To'] = entry
        s.sendmail(From, [entry], msg.as_string())
    s.quit()

例2：

import smtplib
from email.mime.text import MIMEText
addr = "10.0.0.178"
From = "me@somewhere.net"
recip = ["me@somewherelese.net","foo@bar.net"]
msg = "Message Body"
send_email(recip,"Subject Line",msg)

def send_email(To,Subj,Mess):
    msg = MIMEText(Mess)
    msg["Subject"] = Subj
    msg['From'] = From
    s = smtplib.SMTP(addr)
    for entry in To:
        msg['To'] = entry
        try:
            s.sendmail(From, [entry], msg.as_string())
        except:
            print "Error sending email"
    s.quit()

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你有没有想过？