On 2018-11-12 19:37, srinivasan wrote:
Dear Python Experts,
[snip]
*SECOND METHOD:*
When I use the subprocess I see the below issue:
def get_gateway_ip(self):
"""
Get the IP address to the WIFI module from the AP
"""
#cmd = 'ip route show 0.0.0.0/0 dev wlp1s0 | cut -d\ -f3'
# f = os.popen(cmd)
# return str(f.read().strip())
p = subprocess.Popen('ip route show 0.0.0.0/0 dev wlp1s0 | cut -d\
-f3', stdout=subprocess.PIPE)
result = p.communicate()[0]
print(result)
[snip]
Error:
root:~/qa/test_library# python3 wifi.py
Enabling wifi
Verify wifi connectivity
True
Get gateway wifi ip
Traceback (most recent call last):
File "wifi.py", line 134, in <module>
print(m.get_gateway_ip())
File "wifi.py", line 76, in get_gateway_ip
p = subprocess.Popen('ip route show 0.0.0.0/0 dev wlp1s0 | cut -d\
-f3', stdout=subprocess.PIPE)
File "/usr/lib/python3.5/subprocess.py", line 676, in __init__
restore_signals, start_new_session)
File "/usr/lib/python3.5/subprocess.py", line 1289, in _execute_child
raise child_exception_type(errno_num, err_msg)
FileNotFoundError: [Errno 2] No such file or directory: 'ip route show
0.0.0.0/0 dev wlp1s0 | cut -d\\ -f3'
root:~/qa/test_library#
As I am stuck with this issue from past 2 days, wondering for any clues
'Popen' thinks that the string you gave it is the path to a command.
It's not; it's a command line with arguments.
You can tell it that the string is a command line by also passing the
keyword argument 'shell=True':
p = subprocess.Popen(r'ip route show 0.0.0.0/0 dev wlp1s0 | cut -d\
-f3', stdout=subprocess.PIPE, shell=True)
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