Python：响应命令行提示

我正在尝试使用Python通过命令行与另一个程序交互。我遇到的主要问题是有多个后续提示的特定呼叫。最初，命令行调用要求输入项目名称，然后继续询问是否要查看项目的任何子文件夹。我需要按顺序回答每个问题的是/否，不幸的是，每个问题的答案并不都是是或否。此外，如果不阅读个别提示，我无法知道问题的答案，因此我无法同时发送一组“y”或“n”

这是命令行调用：

si viewproject

输入命令后，命令行将提示：

输入项目名称：

一个例子是：

输入项目名称：c:/test.pj

进入项目后，会提示以下内容：

是否要递归到子项目test_subprj.pj？[ynYN]（n）

在这一点上，根据我是否需要该子项目，我需要用y或n来响应。同样，对这个问题的回答取决于子项目。我需要能够在这个提示中读取子项目，以便用“y”或“n”来响应它

目前，我需要手动输入项目，分别输入y和n。我的目标是使用Python自动化这个过程

有没有办法自动响应这些命令行提示

当前进展 子流程策略 此方法在with Popen语句之后挂起。它从不出错，但从不进入或退出for语句，也从不完成。目前，我将所有答案默认为“n”，但稍后将用逻辑替换

Winpexpect策略 返回以下错误消息：

 Traceback (most recent call last):
   File "C:\Python33\lib\site-packages\winpexpect-1.5-py3.3.egg\winpexpect.py", line 541, in read_nonblocking
     handle, status, data = self.child_output.get(timeout=timeout)
   File "C:\Python33\lib\queue.py", line 175, in get
     raise Empty
 queue.Empty

 During handling of the above exception, another exception occurred:

 Traceback (most recent call last):
   File "C:\Python33\lib\site-packages\winpexpect-1.5-py3.3.egg\pexpect.py", line 1378, in expect_loop
     c = self.read_nonblocking (self.maxread, timeout)
   File "C:\Python33\lib\site-packages\winpexpect-1.5-py3.3.egg\winpexpect.py", line 543, in read_nonblocking
     raise TIMEOUT('Timeout exceeded in read_nonblocking().')
 pexpect.TIMEOUT: Timeout exceeded in read_nonblocking().

 During handling of the above exception, another exception occurred:

 Traceback (most recent call last):
   File "K:\eclipse_3.6.0\plugins\org.python.pydev_2.6.0.2012062818\pysrc\pydev_runfiles.py", line 432, in __get_module_from_str
     mod = __import__(modname)
   File "C:\workspace\Test_prj\Test_prj.py", line 19, in <module>
     for found in iter(partial(p.expect, patterns), 1): # until EOF
   File "C:\Python33\lib\site-packages\winpexpect-1.5-py3.3.egg\pexpect.py", line 1311, in expect
     return self.expect_list(compiled_pattern_list, timeout, searchwindowsize)
   File "C:\Python33\lib\site-packages\winpexpect-1.5-py3.3.egg\pexpect.py", line 1325, in expect_list
     return self.expect_loop(searcher_re(pattern_list), timeout, searchwindowsize)
   File "C:\Python33\lib\site-packages\winpexpect-1.5-py3.3.egg\pexpect.py", line 1409, in expect_loop
     raise TIMEOUT (str(e) + '\n' + str(self))
 pexpect.TIMEOUT: Timeout exceeded in read_nonblocking().
 <winpexpect.winspawn object at 0x0144AE50>
 version: 2.3 ($Revision: 399 $)
 command: si
 args: ['si', 'viewproject', '--project=c:/test.pj']
 searcher: searcher_re:
     0: re.compile("ynYN")
     1: EOF
 buffer (last 100 chars): 
 before (last 100 chars): 
 after: <class 'pexpect.TIMEOUT'>
 match: None
 match_index: None
 exitstatus: None
 flag_eof: False
 pid: 6448
 child_fd: 4
 closed: False
 timeout: 30
 delimiter: <class 'pexpect.EOF'>
 logfile: <_io.TextIOWrapper name='<stdout>' mode='w' encoding='Cp1252'>
 logfile_read: None
 logfile_send: None
 maxread: 2000
 ignorecase: False
 searchwindowsize: None
 delaybeforesend: 0.05
 delayafterclose: 0.1
 delayafterterminate: 0.1
 ERROR: Module: Test_prj could not be imported (file: C:\workspace\Test_prj\Test_prj.py).

回溯（最近一次呼叫最后一次）：
文件“C:\Python33\lib\site packages\winpexpect-1.5-py3.3.egg\winpexpect.py”，第541行，以只读非阻塞方式
句柄、状态、数据=self.child\u output.get（超时=超时）
get中第175行的文件“C:\Python33\lib\queue.py”
空举
排队，空的
在处理上述异常期间，发生了另一个异常：
回溯（最近一次呼叫最后一次）：
expect\u循环中的第1378行文件“C:\Python33\lib\site packages\winpexpect-1.5-py3.3.egg\pexpect.py”
c=self.read\u非阻塞（self.maxread，超时）
文件“C:\Python33\lib\site packages\winpexpect-1.5-py3.3.egg\winpexpect.py”，第543行，以只读方式
raise TIMEOUT（'在read_nonblocking（）中超过超时。'）
pexpect.TIMEOUT:在read_nonblocking（）中超过超时。
在处理上述异常期间，发生了另一个异常：
回溯（最近一次呼叫最后一次）：
文件“K:\eclipse\u 3.6.0\plugins\org.python.pydev\u 2.6.0.2012062818\pysrc\pydev\u runfiles.py”，第432行，位于\u-get\u模块\u from\u str中
mod=uuu导入（modname）
文件“C:\workspace\Test\u prj\Test\u prj.py”，第19行，在
对于在iter中发现的（部分（p.expect，patterns），1）：#直到EOF
expect中第1311行的文件“C:\Python33\lib\site packages\winpexpect-1.5-py3.3.egg\pexpect.py”
返回self.expect\u列表（编译的\u模式\u列表、超时、搜索窗口大小）
expect\u列表中第1325行的文件“C:\Python33\lib\site packages\winpexpect-1.5-py3.3.egg\pexpect.py”
返回self.expect\u循环（搜索器\u re（模式列表），超时，搜索窗口大小）
expect\u循环中的文件“C:\Python33\lib\site packages\winpexpect-1.5-py3.3.egg\pexpect.py”，第1409行
提升超时（str（e）+'\n'+str（self））
pexpect.TIMEOUT:在read_nonblocking（）中超过超时。
版本：2.3（$修订：399$）
命令：si
参数：['si'，'viewproject'，'--project=c:/test.pj']
搜索者：搜索者\u re:
0：重新编译（“ynYN”）
1:EOF
缓冲区（最后100个字符）：
之前（最后100个字符）：
之后：
匹配：无
匹配索引：无
退出状态：无
flag_eof：False
pid:6448
儿童：4
关闭：错误
超时时间：30
分隔符：
日志文件：
日志文件读取：无
日志文件发送：无
maxread:2000
忽略情况：错误
searchwindowsize:无
发送前延迟：0.05
延迟后关闭：0.1
延迟后终止：0.1
错误：无法导入模块：Test\u prj（文件：C:\workspace\Test\u prj\Test\u prj.py）。

安装Winpexpect 懒人之道

第一世界问题

Python对我来说是一种新语言，我以前从未为Python安装过包。此外，Python3.x与Python的其他版本稍有不同，这使得安装模块更像是一次冒险

因此，为了帮助其他人获得一些甜蜜的模块操作（并帮助那些更有知识的人看看我是否做错了什么），这里有一个即将成功的故事（希望如此），记录了我是如何获得和安装第一个模块的

设置

Python允许第三方小组开发和分发扩展编程语言能力的模块。当然，有一种标准方法可以帮助第三方开发人员使模块尽可能容易地提供给最终用户

对于Python3.x，分发模块的标准称为Distutils

以下是开发人员如何使用Distutils：

以下是最终用户使用Distutils的方式：

通常，在命令行中导航到已下载模块的文件夹并运行“setup.py install”就足够了

但是

有时候生活并不那么简单，你的安装可能仍然有问题。事实上，你可能还需要别的东西。例如，可能会出现以下错误：

Downloading http://pypi.python.org/packages/source/d/distribute/distribute-0.6.36.tar.gz
Traceback (most recent call last):
  File "C:\Python33\lib\urllib\request.py", line 1252, in do_open
    h.request(req.get_method(), req.selector, req.data, headers)       File "C:\Python33\lib\http\client.py", line 1049, in request
    self._send_request(method, url, body, headers)
  File "C:\Python33\lib\http\client.py", line 1087, in _send_request
    self.endheaders(body)
  File "C:\Python33\lib\http\client.py", line 1045, in endheaders
    self._send_output(message_body)
  File "C:\Python33\lib\http\client.py", line 890, in _send_output
    self.send(msg)
  File "C:\Python33\lib\http\client.py", line 828, in send
    self.connect()
  File "C:\Python33\lib\http\client.py", line 806, in connect
    self.timeout, self.source_address)
  File "C:\Python33\lib\socket.py", line 406, in create_connection
    for res in getaddrinfo(host, port, 0, SOCK_STREAM):
socket.gaierror: [Errno 11001] getaddrinfo failed

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\workspace\PythonTest\distribute_setup.py", line 553, in <module>
    sys.exit(main())
  File "C:\workspace\PythonTest\distribute_setup.py", line 549, in main
    tarball = download_setuptools(download_base=options.download_base)
  File "C:\workspace\PythonTest\distribute_setup.py", line 204, in download_setuptools
    src = urlopen(url)
  File "C:\Python33\lib\urllib\request.py", line 160, in urlopen
    return opener.open(url, data, timeout)
  File "C:\Python33\lib\urllib\request.py", line 473, in open
    response = self._open(req, data)
  File "C:\Python33\lib\urllib\request.py", line 491, in _open
    '_open', req)
  File "C:\Python33\lib\urllib\request.py", line 451, in _call_chain
    result = func(*args)
  File "C:\Python33\lib\urllib\request.py", line 1272, in http_open
    return self.do_open(http.client.HTTPConnection, req)
  File "C:\Python33\lib\urllib\request.py", line 1255, in do_open
    raise URLError(err)
urllib.error.URLError: <urlopen error [Errno 11001] getaddrinfo failed>

“ImportError”没有名为Setuptools的模块“”

幸运的是，有一个解决方案：

事实证明，并不是所有东西都使用distutils。有些软件包使用setuptools。不幸的是，Python3.x没有setuptools。相反，Python3.x

 Traceback (most recent call last):
   File "C:\Python33\lib\site-packages\winpexpect-1.5-py3.3.egg\winpexpect.py", line 541, in read_nonblocking
     handle, status, data = self.child_output.get(timeout=timeout)
   File "C:\Python33\lib\queue.py", line 175, in get
     raise Empty
 queue.Empty

 During handling of the above exception, another exception occurred:

 Traceback (most recent call last):
   File "C:\Python33\lib\site-packages\winpexpect-1.5-py3.3.egg\pexpect.py", line 1378, in expect_loop
     c = self.read_nonblocking (self.maxread, timeout)
   File "C:\Python33\lib\site-packages\winpexpect-1.5-py3.3.egg\winpexpect.py", line 543, in read_nonblocking
     raise TIMEOUT('Timeout exceeded in read_nonblocking().')
 pexpect.TIMEOUT: Timeout exceeded in read_nonblocking().

 During handling of the above exception, another exception occurred:

 Traceback (most recent call last):
   File "K:\eclipse_3.6.0\plugins\org.python.pydev_2.6.0.2012062818\pysrc\pydev_runfiles.py", line 432, in __get_module_from_str
     mod = __import__(modname)
   File "C:\workspace\Test_prj\Test_prj.py", line 19, in <module>
     for found in iter(partial(p.expect, patterns), 1): # until EOF
   File "C:\Python33\lib\site-packages\winpexpect-1.5-py3.3.egg\pexpect.py", line 1311, in expect
     return self.expect_list(compiled_pattern_list, timeout, searchwindowsize)
   File "C:\Python33\lib\site-packages\winpexpect-1.5-py3.3.egg\pexpect.py", line 1325, in expect_list
     return self.expect_loop(searcher_re(pattern_list), timeout, searchwindowsize)
   File "C:\Python33\lib\site-packages\winpexpect-1.5-py3.3.egg\pexpect.py", line 1409, in expect_loop
     raise TIMEOUT (str(e) + '\n' + str(self))
 pexpect.TIMEOUT: Timeout exceeded in read_nonblocking().
 <winpexpect.winspawn object at 0x0144AE50>
 version: 2.3 ($Revision: 399 $)
 command: si
 args: ['si', 'viewproject', '--project=c:/test.pj']
 searcher: searcher_re:
     0: re.compile("ynYN")
     1: EOF
 buffer (last 100 chars): 
 before (last 100 chars): 
 after: <class 'pexpect.TIMEOUT'>
 match: None
 match_index: None
 exitstatus: None
 flag_eof: False
 pid: 6448
 child_fd: 4
 closed: False
 timeout: 30
 delimiter: <class 'pexpect.EOF'>
 logfile: <_io.TextIOWrapper name='<stdout>' mode='w' encoding='Cp1252'>
 logfile_read: None
 logfile_send: None
 maxread: 2000
 ignorecase: False
 searchwindowsize: None
 delaybeforesend: 0.05
 delayafterclose: 0.1
 delayafterterminate: 0.1
 ERROR: Module: Test_prj could not be imported (file: C:\workspace\Test_prj\Test_prj.py).

Downloading http://pypi.python.org/packages/source/d/distribute/distribute-0.6.36.tar.gz
Traceback (most recent call last):
  File "C:\Python33\lib\urllib\request.py", line 1252, in do_open
    h.request(req.get_method(), req.selector, req.data, headers)       File "C:\Python33\lib\http\client.py", line 1049, in request
    self._send_request(method, url, body, headers)
  File "C:\Python33\lib\http\client.py", line 1087, in _send_request
    self.endheaders(body)
  File "C:\Python33\lib\http\client.py", line 1045, in endheaders
    self._send_output(message_body)
  File "C:\Python33\lib\http\client.py", line 890, in _send_output
    self.send(msg)
  File "C:\Python33\lib\http\client.py", line 828, in send
    self.connect()
  File "C:\Python33\lib\http\client.py", line 806, in connect
    self.timeout, self.source_address)
  File "C:\Python33\lib\socket.py", line 406, in create_connection
    for res in getaddrinfo(host, port, 0, SOCK_STREAM):
socket.gaierror: [Errno 11001] getaddrinfo failed

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\workspace\PythonTest\distribute_setup.py", line 553, in <module>
    sys.exit(main())
  File "C:\workspace\PythonTest\distribute_setup.py", line 549, in main
    tarball = download_setuptools(download_base=options.download_base)
  File "C:\workspace\PythonTest\distribute_setup.py", line 204, in download_setuptools
    src = urlopen(url)
  File "C:\Python33\lib\urllib\request.py", line 160, in urlopen
    return opener.open(url, data, timeout)
  File "C:\Python33\lib\urllib\request.py", line 473, in open
    response = self._open(req, data)
  File "C:\Python33\lib\urllib\request.py", line 491, in _open
    '_open', req)
  File "C:\Python33\lib\urllib\request.py", line 451, in _call_chain
    result = func(*args)
  File "C:\Python33\lib\urllib\request.py", line 1272, in http_open
    return self.do_open(http.client.HTTPConnection, req)
  File "C:\Python33\lib\urllib\request.py", line 1255, in do_open
    raise URLError(err)
urllib.error.URLError: <urlopen error [Errno 11001] getaddrinfo failed>

running test
running build_py
running egg_info
creating c:\documents and settings\slz1fh\desktop\winpexpect\geertj-winpexpect-76df3cfcb143\build\lib\winpexpect.egg-info
writing c:\documents and settings\slz1fh\desktop\winpexpect\geertj-winpexpect-76df3cfcb143\build\lib\winpexpect.egg-info\PKG-INFO
writing dependency_links to c:\documents and settings\slz1fh\desktop\winpexpect\geertj-winpexpect-76df3cfcb143\build\lib\winpexpect.egg-info\dependency_links.txt
writing top-level names to c:\documents and settings\slz1fh\desktop\winpexpect\geertj-winpexpect-76df3cfcb143\build\lib\winpexpect.egg-info\top_level.txt
writing requirements to c:\documents and settings\slz1fh\desktop\winpexpect\geertj-winpexpect-76df3cfcb143\build\lib\winpexpect.egg-info\requires.txt
writing manifest file 'c:\documents and settings\slz1fh\desktop\winpexpect\geertj-winpexpect-76df3cfcb143\build\lib\winpexpect.egg-info\SOURCES.txt'
reading manifest file 'c:\documents and settings\slz1fh\desktop\winpexpect\geertj-winpexpect-76df3cfcb143\build\lib\winpexpect.egg-info\SOURCES.txt'
writing manifest file 'c:\documents and settings\slz1fh\desktop\winpexpect\geertj-winpexpect-76df3cfcb143\build\lib\winpexpect.egg-info\SOURCES.txt'
running build_ext
Traceback (most recent call last):
  File "C:\Documents and Settings\SLZ1FH\Desktop\winpexpect\geertj-winpexpect-76df3cfcb143\setup.py", line 35, in <module>
    use_2to3 = True
  File "C:\Python33\lib\distutils\core.py", line 148, in setup
    dist.run_commands()
  File "C:\Python33\lib\distutils\dist.py", line 917, in run_commands
    self.run_command(cmd)
  File "C:\Python33\lib\distutils\dist.py", line 936, in run_command
    cmd_obj.run()
  File "C:\Python33\lib\site-packages\distribute-0.6.36-py3.3.egg\setuptools\command\test.py", line 138, in run
    self.with_project_on_sys_path(self.run_tests)
  File "C:\Python33\lib\site-packages\distribute-0.6.36-py3.3.egg\setuptools\command\test.py", line 118, in with_project_on_sys_path
    func()
  File "C:\Python33\lib\site-packages\distribute-0.6.36-py3.3.egg\setuptools\command\test.py", line 164, in run_tests
    testLoader = cks
  File "C:\Python33\lib\unittest\main.py", line 124, in __init__
    self.parseArgs(argv)
  File "C:\Python33\lib\unittest\main.py", line 168, in parseArgs
    self.createTests()
  File "C:\Python33\lib\unittest\main.py", line 175, in createTests
    self.module)
  File "C:\Python33\lib\unittest\loader.py", line 137, in loadTestsFromNames
    suites = [self.loadTestsFromName(name, module) for name in names]
  File "C:\Python33\lib\unittest\loader.py", line 137, in <listcomp>
    suites = [self.loadTestsFromName(name, module) for name in names]
  File "C:\Python33\lib\unittest\loader.py", line 96, in loadTestsFromName
    module = __import__('.'.join(parts_copy))
  File "C:\Python33\lib\site-packages\nose-1.3.0-py3.3.egg\nose\__init__.py", line 1, in <module>
    from nose.core import collector, main, run, run_exit, runmodule
  File "C:\Python33\lib\site-packages\nose-1.3.0-py3.3.egg\nose\core.py", line 143
    print "%s version %s" % (os.path.basename(sys.argv[0]), __version__)
                    ^
SyntaxError: invalid syntax

import re
import sys
from functools import partial
from winpexpect import EOF, winspawn as spawn

p = spawn('xx viewproject')
p.logfile = sys.stdout
patterns = ['the project:', re.escape('? [ynYN](n)'), EOF]
for found in iter(partial(p.expect, patterns), 2): # until EOF
    if found == 0:
        p.sendline(project_name)
    elif found == 1:
        filename = get_filename_from_prompt(p.before) # a regex could be used
        answer = yes_or_no_from_subproject.get(filename, 'no') # a dict
        p.sendline(answer)

from subprocess import Popen, PIPE

with Popen(["xx", "viewproject"], stdin=PIPE, stdout=PIPE, 
           universal_newlines=True) as p:
    for line in p.stdout: 
        if line.startswith("Please enter the name of the project"):
            answer = project_name
        elif line.startswith("Would you like to recurse into the subproject"):
            filename = get_filename_from_prompt(line) # a regex could be used
            answer = yes_or_no_from_subproject.get(filename, 'n') # a dict
        else:
            continue # skip it
        print(answer, file=p.stdin) # provide answer
        p.stdin.flush()

from subprocess import Popen, PIPE, STDOUT

with Popen(["xx", "viewproject"], bufsize=0,
           stdin=PIPE, stdout=PIPE, stderr=STDOUT) as p:
    print(repr(p.stdout.read(1)))