这里是Xilinx的XSCT控制台的示例包装。 （这只是在控制台上回显XSCT的答案，并将命令提供给XSCT）

#xsct_wrapper.py

import sys
import os
import re
import pexpect

# Path of Xilinx'XSCT executable:
xsct = '/opt/Xilinx/Vivado/2017.4/bin/xsdb'
prompt = '% '

# Start XSCT
p = pexpect.spawn(xsct)

# Wait for prompt
p.expect(prompt,timeout = 5)

# print the texts
print(p.before.decode(),end='')
print(p.match.group(0).decode(),end='')


while True:

    # Wait and run a command.
    command = input()
    p.sendline(command)

    try:
        # Wait for prompt
        p.expect(prompt)

        # print the texts
        print(p.before.decode(),end='')
        print(p.match.group(0).decode(),end='')

    except pexpect.EOF:
        # The program has exited
        print('The program has exied... BY!')
        break

我的问题是XSCT的答案未对齐，或者从未到达。这是一个片段：

PC:~$ python3 xsct_wrapper.py
rlwrap: warning: your $TERM is 'xterm-256color' but rlwrap couldn't find it in the terminfo database. Expect some problems.

****** Xilinx System Debugger (XSDB) v2017.4
  **** Build date : Dec 15 2017-21:02:16
    ** Copyright 1986-2017 Xilinx,Inc. All Rights Reserved.


xsdb% puts hello
xsdb%                                    ((I hit enters here...))
xsdb%
xsdb% ello
xsdb%

虽然我本机启动了xsct却可以按预期工作：

PC:~$ /opt/Xilinx/Vivado/2017.4/bin/xsdb
rlwrap: warning: your $TERM is 'xterm-256color' but rlwrap couldn't find it in the terminfo database. Expect some problems.

****** Xilinx System Debugger (XSDB) v2017.4
  **** Build date : Dec 15 2017-21:02:16
    ** Copyright 1986-2017 Xilinx,Inc. All Rights Reserved.


xsdb% puts hello
hello
xsdb%

我该怎么办？

（我尝试将包装器中的可执行文件从xsct更改为bash，然后按预期方式工作。该错误是否位于XSCT程序中？）

我使用：

• 5.0.0-32-通用＃34〜18.04.2-Ubuntu SMP 10月10日10:36:02 UTC 2019 x86_64 x86_64 x86_64 GNU / Linux
• Python 3.6.8
• pexpect == 4.2.1
• Vivado 2017.4