使用python模块py3270的AttributeError

Question

作为一些自动化的一部分，我正在尝试使用python连接到大型机，在那里我可以访问大型机文件并创建报告。就像使用大型机文件作为DB for python程序一样。

要登录到大型机-我们需要提供主机详细信息(xyz.host.com)，然后是区域详细信息(H123p)，然后是我们的凭据。

我发现我们可以使用python包py3270来做到这一点，并尝试这样做，但得到了错误。

from py3270 import Emulator

# or not (uses s3270)
em = Emulator()

em.connect('xyx.example.com')
em.fill_field(3, 1, 'xxxx',5)
em.send_enter()
em.fill_field(2, 1, 'xxxxxxx', 7)
em.send_enter()
em.fill_field(8, 20, 'xxxxxxxx', 8)
em.send_enter()

# if your host unlocks the keyboard before truly being ready you can use:
em.wait_for_field()

# maybe look for a status message
if not em.string_found(1, 2, 'login succesful'):
abort()

# do something useful

# disconnect from host and kill subprocess
em.terminate()

错误：

File "C:/Users/vganr/PycharmProjects/test/mainframe.py", line 6, in    
<module>
em = Emulator()
File "C:\Program Files (x86)\Python37-32\lib\site-packages\py3270  
\__init__.py", line 273, in __init__
self.app = app or self.create_app(visible, args)
File "C:\Program Files (x86)\Python37-32\lib\site-packages\py3270
\__init__.py", line 291, in create_app
return Ws3270App(args)
File "C:\Program Files (x86)\Python37-32\lib\site-packages\py3270   
\__init__.py", line 140, in __init__
self.spawn_app()
File "C:\Program Files (x86)\Python37-32\lib\site-packages\py3270  
\__init__.py", line 145, in spawn_app
args, stdin=subprocess.PIPE, stdout=subprocess.PIPE,   
stderr=subprocess.PIPE
File "C:\Program Files (x86)\Python37-32\lib\subprocess.py", line 775,   
in __init__
restore_signals, start_new_session)
File "C:\Program Files (x86)\Python37-32\lib\subprocess.py", line 1178,  
in _execute_child
startupinfo)

FileNotFoundError: [WinError 2] The system cannot find the file specified
Exception ignored in: <function Emulator.__del__ at 0x038CB810>
Traceback (most recent call last):
File "C:\Program Files (x86)\Python37-32\lib\site-packages\py3270     
\__init__.py", line 285, in __del__
self.terminate()
File "C:\Program Files (x86)\Python37-32\lib\site-packages\py3270   
\__init__.py", line 320, in terminate
if not self.is_terminated:

AttributeError: 'Emulator' object has no attribute 'is_terminated'

Answer 1

根据您看到的错误消息，我怀疑您在缺少/未找到x3270/s3270库方面存在问题。

return Ws3270App(args)
File "C:\Program Files (x86)\Python37-32\lib\site-packages\py3270   
\__init__.py", line 140, in __init__
self.spawn_app()
File "C:\Program Files (x86)\Python37-32\lib\site-packages\py3270  
\__init__.py", line 145, in spawn_app
args, stdin=subprocess.PIPE, stdout=subprocess.PIPE,   
stderr=subprocess.PIPE
File "C:\Program Files (x86)\Python37-32\lib\subprocess.py", line 775,   
in __init__
restore_signals, start_new_session)
File "C:\Program Files (x86)\Python37-32\lib\subprocess.py", line 1178,  
in _execute_child
startupinfo)

以上情况表明，该库正在尝试启动x3270的windows版本Ws3270，但无法启动。

确保所需的库在您的path中，并且可以从python中看到。