import subprocess
subprocess.call(['C:\Windows\System32\notepad.exe'])
Leads to error:
Traceback (most recent call last): File "C:\Program Files (x86)\Wing
IDE 101 5.0\src\debug\tserver_sandbox.py", line 3, in
pass File "c:\Python27\Lib\subprocess.py", line 172, in call
return Popen(*popenargs, **kwargs).wait() File "c:\Python27\Lib\subprocess.py", line 408, in init
errread, errwrite) File "c:\Python27\Lib\subprocess.py", line 663, in _execute_child
startupinfo) WindowsError: [Error 2] The system cannot find the file specified
But I can run Notepad using that exact path from the filename bar of a folder window. What am I missing?
The problem is the unescaped backlashes in your path. Python interprets '\n' as a single newline character.
Either escape the backslashes:
'C:\\Windows\\System32\\notepad.exe'
Or (preferred) use a raw string with an r prefix:
r'C:\Windows\System32\notepad.exe'
Here's the code that might work for you
subprocess.Popen(['C:\\Windows\\System32\\notepad.exe'])
Related
I am trying to get the output of Cell.all() function from the wifi module but it shows:
Traceback (most recent call last):
File "yea.py", line 3, in <module>
cell = Cell.all('wlp0s20u2')
File "/usr/lib/python2.7/site-packages/wifi/scan.py", line 39, in all
stderr=subprocess.STDOUT)
File "/usr/lib/python2.7/subprocess.py", line 212, in check_output
process = Popen(stdout=PIPE, *popenargs, **kwargs)
File "/usr/lib/python2.7/subprocess.py", line 390, in __init__
errread, errwrite)
File "/usr/lib/python2.7/subprocess.py", line 1024, in _execute_child
raise child_exception
OSError: [Errno 2] No such file or directory
I have been searching for a fix for a couple of hours now, and everything I found is related to the subprocess module. Is there a way to fix this (pass a shell=True argument) or does anybody know a module similar to wifi that i could use for a simple wifi mapping script?
P.S. If it is relevant I'm using Solus 3 linux distro.
I am new to python scripting. I am trying to run subprocess methods on Python Idle and getting these errors:
import subprocess
subprocess.check_output("ls")
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Users\ramakrishna\AppData\Local\Programs\Python\Python36\lib\subprocess.py", line 336, in check_output
**kwargs).stdout
File "C:\Users\ramakrishna\AppData\Local\Programs\Python\Python36\lib\subprocess.py", line 403, in run
with Popen(*popenargs, **kwargs) as process:
File "C:\Users\ramakrishna\AppData\Local\Programs\Python\Python36\lib\subprocess.py", line 707, in __init__
restore_signals, start_new_session)
File "C:\Users\ramakrishna\AppData\Local\Programs\Python\Python36\lib\subprocess.py", line 990, in _execute_child
startupinfo)
FileNotFoundError: [WinError 2] The system cannot find the file specified
Please help me out to resolve this error.
Thank you
seems like you are running windows. Windows has no "ls" command, so you get a FileNotFoundError exception. I am not familiar with windows and python, but try "dir" instead of "ls", that should work.
I want to execute shell command "objdump" using python for my research work
I have used subprocess.call("command") to execute linux command but its not working.
Sample code which i have tried is
import subprocess
subprocess.call("date")
after the execution
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Python27\lib\subprocess.py", line 168, in call
return Popen(*popenargs, **kwargs).wait()
File "C:\Python27\lib\subprocess.py", line 390, in __init__
errread, errwrite)
File "C:\Python27\lib\subprocess.py", line 640, in _execute_child
startupinfo)
WindowsError: [Error 2] The system cannot find the file specified
You must do this:
subprocess.call('date', shell=True)
Actually, Shell does allow you to access to global variable and programs that are in $PATH and your shell.
Have you tried ?
import subprocess
subprocess.call("date", shell = True)
I am tring to run a python file and it start but after that give me this error. What I have to do to fixed this error, I am beginner with python.
Traceback (most recent call last):
File "./mininet_multicast_pox.py", line 318, in <module>
mcastTest(topo, False, hosts)
File "./mininet_multicast_pox.py", line 53, in mcastTest
pox_process = Popen(pox_arguments, stdout=fnull, stderr=fnull, shell=False, close_fds=True)
File "/usr/lib/python2.7/subprocess.py", line 710, in __init__
errread, errwrite)
File "/usr/lib/python2.7/subprocess.py", line 1327, in _execute_child
raise child_exception
OSError: [Errno 2] No such file or directory
You have to provide an absolute path to you file.
Without that, the subprocess module can't find it.
The os module provides routine for that.
When i execute .\install.bat on C:\Install\IBM_Docs\DocsConversion\DocsConversion\installer where the "install" file is.
Traceback(most recent call last):
File "conversion/install.py", line 219, in <module>
if not pi.do();
File "C:\Install\IBM_Docs\DocsConversion\DocsConversion\installer\conversion\prepare_install.py", line 100 in do
if not self.verify_was();
File "C:\Install\IBM_Docs\DocsConversion\DocsConversion\installer\conversion\prepare_install.py", line 78, in verify_was
succ, ws_out = call_wsadmin(args)
File "C:\Install\IBM_Docs\DocsConversion\DocsConversion\installer\util\common.py", line 24, in call_wsadmin
stdout=ws_log, stderr=ws_log
File "C:\Python27\lib\subprocess.py", line 711, in ___init___
errread, errwrite)
File "C:\Python27\lib\subprocess.py", line 948. in _execute_child
startupinfo)
WindowsError: [Error 2] The System cannot find the file specified
I've already double check if the "install.bat" is on the directory and it is their.
What seems to be the problem?
Thanks!
You can try adding the path to python.exe to your windows system variables.