Pexpect 将 '/r/n' 插入 sendline()

Pexpect inserts '/r/n' into sendline()

我正在使用 pexpect 在 Ubuntu 20.04 上的 zsh 终端中自动化 运行ning 一个 C 程序。 有问题的程序是一个频谱转换器:http://www.np.ph.bham.ac.uk/research_resources/programs/spec_conv/spec_conv.c

我已经安装了它并且在我的路径中。我无法在我的终端中 运行 'spec_conv' 并且程序 运行 正确。

程序启动时有一组初始选项 (0-9)。我需要选择5。第二个选项我点击'Y'。该程序然后要求一个文件名。我有一个名为 'file_list' 的文件,我将其输入终端并按预期处理频谱。

我正在尝试使用 python 自动执行此操作。到目前为止我的代码是:

import pexpect
child = pexpect.spawn('spec_conv')
child.sendline('5')
child.sendline('y')
child.sendline('file_list')
print(child.read())

代码似乎无法读取文件。 print(child.read()) 的输出是:

b'\r\n \t \t    *****Welcome to SPEC_CONV*****\r\n\tThis program converts spectra between RadWare, Ascii,\r\n\tXtrack (GASPWARE) and Ortec (binary Chn & ASCII Spe) formats,\r\n\tincluding multiple-spectra (<999) Xtrack files, e.g. from AGATA.\r\n\tand can gainmatch spectra.\r\n\t(Ascii means (y) or (x y) data starting from channel zero)\r\n\tComment lines starting with # are ignored at the front of\r\n\tascii spectra. The 1 or 2 col. format is auto-detected.\r\n\r\n 1) to convert RadWare (.spe) ==> Ascii (.txt)\r\n 2) to convert Ascii (.txt) ==> RadWare (.spe)\r\n 3) to convert Ascii (.txt) ==> Xtrack (.spec)\r\n 4) to convert Maestro_Chn (.Chn) ==> Ascii (.txt)\r\n 5) to convert Maestro_Chn (.Chn) ==> RadWare (.spe)\r\n 6) to convert Xtrack (.spec) ==> Ascii (.txt)\r\n 7) to convert Xtrack (.spec) ==> RadWare (.spe)\r\n 8) to convert GENIE (.IEC) ==> RadWare (.spe)\r\n 9) to convert Maestro_Spe (.Spe) ==> RadWare (.spe)\r\n a) to convert Maestro_Spe (.Spe) ==> Ascii (.txt)\r\n g) to gainmatch a RadWare spectrum\r\n 0) Quit\r\n5^J\r\nRead spectrum names from list file (y/n) \r\ny^J\r\nType filename containing list of spectrum file names:\r\nCannot open file:  \r\nfile_list\r\n'

正如您在该提取物的最后所看到的那样,它正在读取名为“\r\nfile_list\r\n”的文件,因此无法找到该文件。我尝试了其他类似问题中提出的几个解决方案,但这些都没有用:

https://github.com/pexpect/pexpect/issues/238 Preventing linewrap when using pexpect / bash

添加 setwinsize:

import pexpect
child = pexpect.spawn('spec_conv')
child.setwinsize(1000,1000)
child.sendline('5')
child.sendline('y')
child.sendline('file_list')
print(child.read())

输出是一样的。

我还尝试按照建议添加“--noediting”来更改我的 .spawn() 输入:

import pexpect
child = pexpect.spawn('spec_conv --noediting')
child.setwinsize(1000,1000)
child.sendline('5')
child.sendline('y')
child.sendline('file_list')
print(child.read())

这给出了较早的失败输出我不完全理解原因:

b'\r\n \t \t     *****Welcome to SPEC_CONV*****\r\n\tThis program converts spectra between RadWare, Ascii,\r\n\tXtrack (GASPWARE) and Ortec (binary Chn & ASCII Spe) formats,\r\n\tincluding multiple-spectra (<999) Xtrack files, e.g. from AGATA.\r\n\tand can gainmatch spectra.\r\n\t(Ascii means (y) or (x y) data starting from channel zero)\r\n\tComment lines starting with # are ignored at the front of\r\n\tascii spectra. The 1 or 2 col. format is auto-detected.\r\n\r\n\r\nUnrecognised arguments...usage: spec_conv\r\n or: spec_conv SpectrumFileName\r\n ***File --noediting does not exist\r\n5\r\ny\r\nfile_list\r\n'

如果您要手动 运行 生成的程序,您应该能够看到当您回复 y/n 问题时您只需要键入 y 和答案无需马车即可立即拍摄 return.

所以你需要发送一个字符,而不是使用 sendline() 它会在发送的字符串中添加一个换行符。替换

child.sendline('y')

来自

child.send('y')