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Executing python script with pdflatex using PHP on Ubuntu webserver?

I am trying to execute a python script which uses pdflatex using php. Running the python script via command line works well.
But if I try to call it with php, it throws this error:
I can't write on file mylatex.log'. (Press Enter to retry, or
Control-D to exit; default file extension is `.log') Please type
another transcript file name: ! Emergency stop ! ==> Fatal error
occurred, no output PDF file produced!
So there seems to be a permission error.
This is the way I am trying to call the php file:
$command = escapeshellcmd('python3 /home/ubuntu/test.py');
$output = shell_exec($command);
echo $output;
The mylatex.log file has 777 permission as a test.
Is there a way to execute a python script which uses a library like pdflatex?

I solved the error by adding the php file to the same directory as the python file. Then it works. There seems to be a problem to call pdflatex in a different directory. Thanks for the help.

Shell command from Python "env: node: No such file or directory"

I got a Node.js CLI program called meyda installed (Mac OS 10.14) using:
sudo npm install --global meyda
From the Terminal I can call the program and it works as expected; like:
meyda --bs=256 --o=apagodis2.csv DczN6842.wav rms
Now, I want to call it from inside a python script (using Spyder) at the same location and tried this – but getting error:
import os
os.system ('/usr/local/bin/meyda --bs=256 --o=apagodis4.csv samples_training/DczN6842.wav rms')
>>> env: node: No such file or directory
I can issue more "traditional" shell commands like this from the same Python script and it works:
os.system ('cp samples_training/DczN6842.wav copy.wav')
Also tried subprocess call with same result. I confirmed the executable is at /usr/local/bin/
To make sure I also removed all file arguments calling the program using only the help flag but same, error.
os.system ('/usr/local/bin/meyda -h')
>>> env: node: No such file or directory
Why is the command not found from inside Python but sucessfully in the macOS Terminal?

Run python program in jenkins job

I am trying to run below code in jenkins job, code is to delete files older than 30 days from a directory in ftp server.
I created freestyle project job in jenkins and in build section I have selected "Execute shell" and I have added below code.
#! /usr/bin/python
import time
import ftputil
host = ftputil.FTPHost('host', 'user', 'pass')
mypath = '/path/directory'
now = time.time()
host.chdir(mypath)
names = host.listdir(host.curdir)
for name in names:
      if host.path.isfile(name):
         host.remove(name)
host.close()
I am facing below error on build
Building remotely on docker-4 (maven linux docker) in workspace /var/lib/jenkins/workspace/Capacity/folder/Test_job
[Test_job] $ /usr/bin/python /tmp/jenkins8422988908580909797.sh
File "/tmp/jenkins8422988908580909797.sh", line 6
SyntaxError: Non-ASCII character '\xc2' in file /tmp/jenkins8422988908580909797.sh on line 6, but no encoding declared;
and I also tried with "Execute python script" build option I am facing similar error like below.
Building remotely on docker-4 (maven linux docker) in workspace /var/lib/jenkins/workspace/Capacity/folder/Test_job
[Test_job] $ python /tmp/jenkins5375363980435767190.py
File "/tmp/jenkins5375363980435767190.py", line 6
SyntaxError: Non-ASCII character '\xc2' in file /tmp/jenkins5375363980435767190.py on line 6, but no encoding declared;
I am new to jenkins job and python, can any one guide how can I resolve this issue.
2) If I select jenkins pipeline job how can I call this python code from jenkinsfile.

Try to install ftputil globally.
pip install ftputil
or
sudo pip install ftputil
The following shell script works with no error, once I installed ftputil globally with sudo.
#!/usr/bin/env python
import time
import datetime
import ftputil

There is nothing special about this python program. If you want to execute it from shell. Then create shell script file e.g. python_prog.sh then, change permissions chmod +x python_prog.sh python_prog.py
python_prog.sh
#!/bin/sh
python python_prog.py
Finally, run the script from terminal . python_prog.sh or ./python_prog.sh

How to execute a system command from a python file

I am using python and trying to execute a system command as below
code.py
import commands
import os
os.system('updatedb')
result:
sh-4.2$ python code.py
updatedb: can not open a temporary file for `/var/lib/mlocate/mlocate.db'
So how to execute all the system commands like above from a python module ?

This is almost certainly simply a permissions problem.
If you can trust your script to run as root:
$ sudo python code.py

python command line ok in python shell but not through windows cmd

I was about to test the ftpmirror builtin script (python322, winXP 32bits) from the cmd windows default shell and get this :
File "C:\Program Files\python322\Tools\Scripts\ftpmirror.py", line 161
print('Skip pattern', repr(pat), end=' ')
^
SyntaxError: invalid syntax
I tested the print() line directly in the python shell, trough cmd, and with idle (and in blender also) : this work obsiously.
I reproduce the error with a coucou.py file like this :
#! /usr/bin/env python3
pat = 'toto'
print("Skip pattern", repr(pat), end=" ")
when directly called from a cmd prompt :
C:\Program Files\python322\Tools\Scripts>coucou.py
same error than with ftpmirror
but :
C:\Program Files\python322\Tools\Scripts>python coucou.py
is ok
and my environment is ok I can execute py scripts directly from the windows ui by double-clicking a .py file, and I got working scripts working fine when called from .bat
I don't get it, it looks specific to the print() end argument, what did I not read yet about the way to execute python3 from the windows cmd shell ?
thanks,
Jerome

Try checking if you are running the same python interpreter when you double click or you run python from the command-line.
Save this in a .py file with this content and try running it with both methods:
import sys
print sys.version_info
I bet you are using different interpreters in each case.