You have two options: Open a logfile and replace sys.stdout with it, not a function: log = open(“myprog.log”, “a”) sys.stdout = log >>> print(“Hello”) >>> # nothing is printed because it goes to the log file instead. Replace print with your log function: # If you’re using python 2.x, uncomment the next line #from __future__ … Read more
$stdout is a global variable that represents the current standard output. STDOUT is a constant representing standard output and is typically the default value of $stdout. With STDOUT being a constant, you shouldn’t re-define it, however, you can re-define $stdout without errors/warnings (re-defining STDOUT will raise a warning). for example, you can do: $stdout = … Read more
The solution you suggest is a good one: create your processes manually such that you have explicit access to their stdout/stderr file handles. You can then create a socket to communicate with the sub-process and use multiprocessing.connection over that socket (multiprocessing.Pipe creates the same type of connection object, so this should give you all the … Read more
This can be done using ANSI Escape Sequences — see here for a list. In PHP, you’ll use “\033” when it’s indicated ESC on that page. In your case, you could use something like this : echo “Progress : “; // 5 characters of padding at the end for ($i=0 ; $i<=100 ; $i++) { … Read more
Simply don’t send the output to a pipe: proc = subprocess.Popen (command_args, shell=False) proc.communicate()
The Windows command prompt (cmd.exe) cannot display the Unicode characters you are using, even though Python is handling it in a correct manner internally. You need to use IDLE, Cygwin, or another program that can display Unicode correctly. See this thread for a full explanation: http://www.nabble.com/unable-to-print-Unicode-characters-in-Python-3-td21670662.html
I was looking to do the same thing and came across this post. I was able to figure it out after reading this and Apple’s documentation. I’m including my solution here. “pipe” and “pipeReadHandle” are declared in the interface. In the init method I included the following code: pipe = [NSPipe pipe] ; pipeReadHandle = … Read more
i fought and fought with this just last week actually… for some reason anything other than the Read() call (ReadToEnd() was not what i needed) seemed to block and never return. here’s what i did to finally get it to “work”: snip 1: private bool ThreadExited = true; private bool ExitThread = false; private void … Read more
Typically, System.out is a buffered output stream, so text is accumulated before it is flushed to the destination location. This can dramatically improve performance in applications that print large amounts of text, since it minimizes the number of expensive system calls that have to be made. However, it means that text is not always displayed … Read more
@Paolo’s solution is perfect if you are interested in printing output after the process has finished executing. In case you want to poll output while the process is running you have to do it this way: process = subprocess.Popen(cmd, stdout=subprocess.PIPE) while True: out = process.stdout.readline(1) if out == ” and process.poll() != None: break if … Read more