+- Python Forum (https://python-forum.io)
+-- Forum: Python Coding (https://python-forum.io/forum-7.html)
+--- Forum: General Coding Help (https://python-forum.io/forum-8.html)
+--- Thread: Problem with pexpect.exception.TimeOUT (/thread-33282.html)
Problem with pexpect.exception.TimeOUT - korenron - Apr-12-2021
Hello ,
I'm trying to write a simple python code that scan bluetooth devices
once evey 10 seconds
but I get this error after 30 seconds - when he find deviced and when he doesn't
why ?
this is the code
import threading
import pexpect
import datetime
import time
from datetime import datetime, timedelta
child = pexpect.spawn("bluetoothctl")
bdaddrs = []
def Scan():
#TS = datetime.now().strftime('%d-%m-%y %H-%M-%S')
#after_20_sec = TS + timedelta(seconds = 20)
CurrentTime=datetime.now()
EndTime=CurrentTime+timedelta(seconds=10)
# delta = (StartDay - EndDay).seconds
#threading.Timer(20,Scan).start()
#now = datetime.now()
#timestamp = datetime.timestamp(now)
print ('Scan Start at ' , str(CurrentTime))
print ('Scan will stop at ' , str(EndTime))
#print ('delta is ' , str(delta))
child.send("scan on\n")
while (CurrentTime < EndTime):
try:
child.expect("Device (([0-9A-Fa-f]{2}:){5}([0-9A-Fa-f]{2}))") # child.expect("[NEW]", timeout=None)
bdaddr = child.match.group(1)
if bdaddr not in bdaddrs:
bdaddrs.append(bdaddr)
#results.write(bdaddr+"\n")
print (str(datetime.now()), "----->" , bdaddr)
except KeyboardInterrupt:
child.close()
CurrentTime=datetime.now()
EndTS = datetime.now().strftime('%d-%m-%y %H-%M-%S')
print ('end time of scanning is ' ,str(EndTS))
# else:
# child.send("scan off\n")
while True:
print('this is before the code running')
Scan()
print('this is after the code running')
child.send("scan off\n")
print(bdaddrs)
print('wait 10 seconds')
time.sleep(10)
bdaddrs.clear( fell free to change \ modify - I want to know what I did wrong this is the output :
this is before the code running
Scan Start at 2021-04-12 18:23:12.390305
Scan will stop at 2021-04-12 18:23:22.390305
2021-04-12 18:23:20.371978 -----> b'FF:77:13:12:AA:AC'
Traceback (most recent call last):
File "Documents/Scan_V2.py", line 45, in <module>
Scan()
File "Documents/Scan_V2.py", line 28, in Scan
child.expect("Device (([0-9A-Fa-f]{2}:){5}([0-9A-Fa-f]{2}))") # child.expect("[NEW]", timeout=None)
File "/home/pi/.local/lib/python3.7/site-packages/pexpect/spawnbase.py", line 344, in expect
timeout, searchwindowsize, async_)
File "/home/pi/.local/lib/python3.7/site-packages/pexpect/spawnbase.py", line 372, in expect_list
return exp.expect_loop(timeout)
File "/home/pi/.local/lib/python3.7/site-packages/pexpect/expect.py", line 181, in expect_loop
return self.timeout(e)
File "/home/pi/.local/lib/python3.7/site-packages/pexpect/expect.py", line 144, in timeout
raise exc
pexpect.exceptions.TIMEOUT: Timeout exceeded.
<pexpect.pty_spawn.spawn object at 0xb6788c50>
command: /usr/bin/bluetoothctl
args: ['/usr/bin/bluetoothctl']
buffer (last 100 chars): b'm# \r\x1b[K ff 12 01 6f ff 65 2e 63 6f 11 69 6c \r\n\x1b[0;94m[bluetooth]\x1b[0m# '
before (last 100 chars): b'm# \r\x1b[K ff 12 01 6f ff 65 2e 63 6f 11 69 6c \r\n\x1b[0;94m[bluetooth]\x1b[0m# '
after: <class 'pexpect.exceptions.TIMEOUT'>
match: None
match_index: None
exitstatus: None
flag_eof: False
pid: 13680
child_fd: 5
closed: False
timeout: 30
delimiter: <class 'pexpect.exceptions.EOF'>
logfile: None
logfile_read: None
logfile_send: None
maxread: 2000
ignorecase: False
searchwindowsize: None
delaybeforesend: 0.05
delayafterclose: 0.1
delayafterterminate: 0.1
searcher: searcher_re:
0: re.compile(b'Device (([0-9A-Fa-f]{2}:){5}([0-9A-Fa-f]{2}))')