spawn problems on Windows 10

[jsweber502]

On Windows 10, after calling spawn, nothing is received from spawned process except EOF.
Problem occurs from either a script or from shell commands.

To Reproduce enter in shell

import wexpect
child = wexpect.spawn('cmd.exe')
print(child)
_<wexpect.host.SpawnPipe object at 0x00ED83E8>
command: C:\WINDOWS\system32\cmd.exe
args: ['C:\\WINDOWS\\system32\\cmd.exe']
searcher: None
buffer (last 100 chars): 
before (last 100 chars): None
after: None
match: None
match_index: None
exitstatus: None
flag_eof: False
host_pid: 17168
child_fd: None
closed: False
timeout: 30
delimiter: <class 'wexpect.wexpect_util.EOF'>
maxread: 60000
ignorecase: False
searchwindowsize: None
delaybeforesend: 0.1
delayafterterminate: 2_
str = child.readline()
print(str)
child.expect('>')
_Traceback (most recent call last):
  File "<pyshell#8>", line 1, in <module>
    child.expect('>')
  File "C:\Users\jweber\AppData\Local\Programs\Python\Python38-32\lib\site-packages\wexpect\host.py", line 732, in expect
    return self.expect_list(compiled_pattern_list, timeout, searchwindowsize)
  File "C:\Users\jweber\AppData\Local\Programs\Python\Python38-32\lib\site-packages\wexpect\host.py", line 745, in expect_list
    return self.expect_loop(searcher_re(pattern_list), timeout, searchwindowsize)
  File "C:\Users\jweber\AppData\Local\Programs\Python\Python38-32\lib\site-packages\wexpect\host.py", line 806, in expect_loop
    raise EOF('EOF flag has been raised.')
wexpect.wexpect_util.EOF: EOF flag has been raised._

Environment:

• Windows10 64-bit ( build17134.1425)
• [Python 3.8.2]
• [wexpect version]

[raczben]

I develop/test it on Win10, with Python 3.7. I will try to test with 3.8, but I don't believe that this can cause this error.

The buffer (last 100 chars): is empty. This leads me, that the start of the program has a problem. Maybe wexpect cannot find the cmd executable. Please turn on the logging, and send me the logfiles.

[jsweber502]

Thanks for the reply. I have attached logfile from following shell commands: Import wexpect child = wexpect.spawn(‘cmd.exe’) child.expect(‘>’) These immediate produce EOF exception. [wexpect.log.log](https://github.com/raczben/wexpect/files/4714857/wexpect.log.log) I saw this in the log: pywintypes.error: (6, 'CreateFile', 'The handle is invalid.')

[jsweber502]

More info. Problem was seen on 2 Win10 machines, BUT only when executing in IDLE. Problem did not occur when running python from cmd prompt.

[raczben]

The most of the IDEs are not supported by wexpect. (Wexpect and IDEs create virtual terminals, which can disturb each other.)

Similar to #1

Some IDE becomes supported with v4.0.0, but I use wexpect in natively.