Python得到傳遞的參數

Question

我正在開發一個項目，允許用戶通過添加必要的參數來設置上傳文件的路徑，但無論出於何種原因，upload_destination變量始終為空！ 這是我的代碼

def main():
  global listen
  global port
  global execute
  global command
  global upload_destination
  global target

  if not len(sys.argv[1:]):
     usage()
  try:
     opts, args = getopt.getopt(sys.argv[1:], "hle:t:p:cu", ["help", "listen", "execute", "target", "port", "command", "upload"])
  except getopt.GetoptError as err:
     print str(err)
     usage()

  for o,a in opts:
     if o in ("-h", "--help"):
         usage()
     elif o in ("-l", "--listen"):
         listen = True
     elif o in ("-e", "--execute"):
         execute = True
     elif o in ("-c", "--commandshell"):
         command = True
     elif o in ("-u", "--upload"):
         #Here's the problem, a is empty even though I include a path
         upload_destination = a
     elif o in ("-t", "--target"):
         target = a
     elif o in ("-p", "--port"):
         port = int(a)
     else:
         assert False, "Unhandled Option"

  if not listen and len(target) and port > 0:
     buffer = sys.stdin.read()
     client_sender(buffer)

  if listen:
     server_loop()

我通過輸入調用該程序

C:\Users\Asus\Desktop\PythonTest>python test.py -l -c -p 3500 -u C:\Users\Asus\Desktop\Test

Answer 1

這是一個簡單的缺失冒號: 。

https://docs.python.org/2/library/getopt.html

options是腳本想要識別的選項字母串，其中的選項需要一個參數后跟冒號（'：';即，與Unix getopt（）使用的格式相同）。

將"hle:t:p:cu"更改為"hle:t:p:cu:"它應該可以工作（至少它對Win7 / Python3.5起作用）。

當您使用代碼執行print(opts, args)時，您會得到：

([('-l', ''), ('-c', ''), ('-p', '3500'), ('-u', '')], ['C:UsersAsusDesktopTest'])

隨着添加的冒號，它變成：

([('-l', ''), ('-c', ''), ('-p', '3500'), ('-u', 'C:UsersAsusDesktopTest')], [])

沒有冒號C:\\Users\\...成為新參數。