Develop Reference

Python code working on terminal but not on web server

I'm executing these lines of code on python terminal and it is working but when i execute it on webserver which is xampp i get output 255 in transcribe_text.txt file but when i run through terminal i get audio to text proper conversion. I'm working on windows environment.
import subprocess
out=subprocess.getstatusoutput(['deepspeech', '--model', 'C:/deepspeech/deepspeech-0.6.0-models/output_graph.pb', '--lm', 'C:/deepspeech/deepspeech-0.6.0-models/lm.binary', '--trie', 'C:/deepspeech/deepspeech-0.6.0-models/trie', '--audio', 'C:/deepspeech/audio/8455-210777-0068.wav'])
#open and read the file after the appending:
print(str(out))
f = open("transcribe_text.txt", "a")
f.write(str(out))
f.close()
#open and read the file after the appending:
f = open("transcribe_text.txt", "r")
print(f.read())
Any solution Please, Thanks

python readlines not working during incron

I'm trying to call a python script through incron:
/data/alucard-ops/drop IN_CLOSE_WRITE /data/alucard-ops/util/test.py $#/$#
but I cant seem to read from the file passed. Here is the script:
#!/usr/bin/env /usr/bin/python3
import os,sys
logfile = '/data/alucard-ops/log/'
log = open(logfile + 'test.log', 'a')
log.write(sys.argv[1] + "\n")
log.write(str(os.path.exists(sys.argv[1])) + "\n")
datafile = open(sys.argv[1], 'r')
log.write('Open\n')
data = datafile.readlines()
log.write("read\n")
datafile.close()
The output generated by the script:
/data/alucard-ops/drop/nsco-20180219.csv
True
Open
It seems to stop at the readlines() call. I dont see any errors in the syslog.
Update: It seems that i can use a subprocess to cat the file and it retrieves the contents. But, when i decode it, data.decode('utf-8') I'm back to nothing in the variable.

I ended up using watchdog instead.

How to decompress a GZIP file pulled from SFTP in Python3 the same way Mac OS's gunzip does it?

Okay, I've been stuck on this one for hours which should have only taken a few minutes of work.
I have the following code which pulls a gzipped CSV file from a datastore:
from ftplib import FTP_TLS
import gzip
import csv
ftps = FTP_TLS('waws-prod.net')
ftps.login(user='foo', passwd='bar')
resp = ftps.retrbinary('RETR data/WFSIV0606201701.700.csv.gz', gzip.open('WFSIV0606201701.700.csv.gz', 'wb').write)
The file appears in the pwd, and I can even open my Mac Decompression tool, and the original CSV is decompressed perfectly.
However, if I try to decompress this file in using the gzip Library, i can't get a UTF8 encoded string to parse:
f=gzip.GzipFile('WFSIV0606201701.700.csv.gz', 'rb')
s = f.read()
I get what appears to be UTF8 bytestrings, however utf8 decoder can't parse the string.
UnicodeDecodeError: 'utf-8' codec can't decode byte 0x8b in position 1: invalid start byte
BUT! If i download directly from the SFTP server using FileZilla, and i do run the gzip.GzipFile code above, it reads it perfectly. Something must be wrong with my downloader/reader but i haven't a clue as to what could be wrong.

resp = ftps.retrbinary('RETR data/WFSIV0606201701.700.csv.gz', gzip.open('WFSIV0606201701.700.csv.gz', 'wb').write)
This line downloads a compressed file, and then compresses it again when writing it to disk.
Replace gzip.open(...).write with open(...).write to write the compressed file directly.

Serial exception Arduino to Python error

I want to read data from Arduino and store in a text file in pc through serial port using pyserial whenever I try to execute the Python code it gives this message I tried many things but didn't work out.
Code:
import io
import serial
from datetime import datetime
from serial import SerialException
connected=False
outfile='C:\Users\Yassine\hello.txt'
ser = serial.Serial(port="COM12", baudrate=9600,timeout=None,bytesize=serial.EIGHTBITS,parity=serial.PARITY_NONE,stopbits=serial.STOPBITS_ONE)
sio = io.TextIOWrapper(io.BufferedRWPair(ser, ser, 1), encoding='ascii', newline ='\r')
with open(outfile,'a') as f:
while ser.isOpen():
try:
datastring=ser.readline()
except serial.SerialException:
pass
print datastring
print datetime.now()
f.write(datetime.now().isoformat() +'\t'+ datastring +'\n' )
f.flush()
while not ser.isOpen():
pass
ser.close()

Check that COM12 is actually the Arduino by looking in device manager.
Or you can execute this in command line to get a list of available serial ports:
python -m serial.tools.list_ports
You may also have something else trying to access the Arduino serial port. Make sure the Serial Monitor in Arduino IDE is closed.

I want to open txt file read the last value of it & write it in other txt file,it's working but the reading value(arg) written to the next file jump the line which is not good for me i want it at the same line with other variables
with open(outfile,'a') as f:
with open (inputfile,'r') as f1:
arg =f1.readline() // that variable i read from the txt
print (arg )
f.write(datetime.now().strftime("%Y-%m-%d ; %H:%M:%S")+'\n'+valueRead+ '\n' +arg+ '\n') // the file i write to
f.flush()
f1.close()
f.close()
TTTs (this is my arg variable that i read from txt file this is what i get)
2017-05-12 ; 15:48:23 TTS (this is how i want it )
Thanks for helping guys

Opening a file in Python: bytes array converted to string?

I have a text file with data such as
b'\x00\x09\x00\xfe'
This was piped into a text file from a TCP socket stream. Call this text file 'stream.txt'. I opened this file with the following code:
f = open("stream.txt", "rb")
bytes_read = f.read()
When I open this file within another Python script, I get a '\' for each '\' in the original file. On top of this, I cannot access the bytes array as such, since it appears to have become a string. That is, 'bytes_read' is now
'b"\\x00\\x09\\x00\\xfe"'
How can I recover this string as a bytes array?
The client code I used to capture this data is the following script:
from socket import *
clientsock = socket(AF_INET, SOCK_STREAM)
clientsock.connect(('1.2.3.4', 2000)) # Open the TCP socket
clientsock.sendall(b'myCommand') # Send a command to the server
data = clientsock.recv(16) # Wait for the response
print(data) # For piping to 'stream.txt'
clientsock.close()
As the data was printed to the terminal, I redirected it to a file:
$ python3 client.py > stream.txt
My goal is to bypass the redirect into text file and pipe directly into a plotter... But first I wanted to get this to work.

Was able to solve this by writing directly to a file. So rather than using 'print(data)', and redirecting to a file, I tried this:
file = open("rawData", "wb")
...
file.write(data)
...
file.close()
Was able to process "rawData" as expected.