嘗試上的縮進錯誤，除了Python中的其他塊以外

Question

除了我問here的問題之外，我堅持要排除錯誤異常。 我已經整理出從另一個文件中讀取文件的列表，但如果其中一個引用的文件不存在，我正在努力。 我希望能夠識別錯誤，發送電子郵件，然後創建文件供以後使用。 但是，我收到的「嘗試，除了其他」塊的縮進錯誤，我投入。 它看起來應該工作，但我不能讓它運行！ Gah！幫幫我！！！

日誌文本文件包含以下內容：

//server-1/data/instances/devapp/log/audit.log

//服務器/數據/實例/ devapp /日誌/bizman.db.log

//server-1/data/instances/devapp/log/foo.txt ＃此文件不服務器

我的代碼如下所示的存在。我認爲最好把它整個發佈而不是一個片段，以防它在程序的早期階段被篡改！

import os, datetime, smtplib 
today = datetime.datetime.now().strftime('%Y-%m-%d') 
time_a = datetime.datetime.now().strftime('%Y%m%d %H-%M-%S') 
checkdir = '/cygdrive/c/bob/python_'+ datetime.datetime.now().strftime('%Y-%m-%d')+'_test' 
logdir = '/cygdrive/c/bob/logs.txt' 
errors = '/cygdrive/c/bob/errors.txt' 

#email stuff 
sender = 'errors@company.com' 
receivers = 'bob@company.com' 
message_1 = """From: errors <errors@company.com> 
To: Bob <bob@company.com> 
Subject: Log file not found on server 

A log file has not been found for the automated check. 
The file has now been created. 
""" 
#end of email stuff 


try: 
       os.chdir (checkdir) # Try opening the recording log directory  
except (OSError, IOError), e: # If it fails then : 
       os.mkdir (checkdir) # Make the new directory 
       os.chdir (checkdir) # Change to the new directory 
       log = open ('test_log.txt', 'a+w') #Create and open log file 
else : 
       log = open ('test_log.txt', 'a+w') #Open log file 

log.write ("***starting file check at %s ***\r\n\r\n"%tme_a) 

def log_opener (logdir) : 
    with open(logdir) as log_lines: #open the file with the log paths in 
     for line in log_lines: # for each log path do : 
      timestamp = time_a + (' Checking ') + line + ('\r\n') 
      try: 
       with open(line.strip()) as logs: 
      except (OSError,IOError), e: 
       try: 
       smtpObj = smtplib.SMTP('localhost') 
       smtpObj.sendmail(sender, receivers, message)   
       log.write (timestamp) 
       log.write ("Log file not found. Email sent. New file created.") 
      except SMTPException: 
       log.write (timestamp) 
       log.write ("Log file not found. Unable to send email. New file created.") 

     else : # The following is just to see if there is any output... More stuff to be added here! 

      print line + ('\r\n') 
      log.write (timestamp) 
      print "".join(logs.readlines()) 

print log_opener(logdir) 

我得到的錯誤如下：

$ python log_5.py 
    File "log_5.py", line 38 
    except (OSError,IOError), e: 
    ^
IndentationError: expected an indented block 

據我所知道的，它應該工作，但...

作爲一個額外的說明，我已經沒有長時間的學習，所以我的很多代碼都是從各種教程修改而來，或者從這裏或網絡上的其他地方借用。 我可能在這裏犯了一個非常基本的錯誤，所以請耐心等待我！

非常感謝您的幫助！

Answer 1

你這行下沒有代碼塊：

with open(line.strip()) as logs: 

每一行像try:，def ...:，with ...:，for ...:需要有代碼的縮進塊在它之下。

在回答您的意見時，您可能想要將代碼分解爲更小的函數，以使事情更清晰。所以，你有這樣的：

def sendEmail(...): 
    try: 
     smtpObj = smtplib.SMTP('localhost') 
     ... 
    except SMTPException: 
     ... 

def log_opener(...): 
    try: 
     with open(line.strip()) as logs: 
      sendEmail(...) 
    except (OSError,IOError), e: 
     .... 

這樣的話，你永遠不會有大量的try和except之間的線，而你避免嵌套try/except塊。