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How to check if there exists a process with a given pid in Python?

...s? I'm getting a pid from a different source other than from os.getpid() and I need to check to see if a process with that pid doesn't exist on the machine. ...
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Determining complexity for recursive functions (Big O notation)

I have a Computer Science Midterm tomorrow and I need help determining the complexity of these recursive functions. I know how to solve simple cases, but I am still trying to learn how to solve these harder cases. These were just a few of the example problems that I could not figure out. Any help wo...
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Python, add trailing slash to directory string, os independently

...os.path.join(path, '', '') or os.path.join(path_with_a_trailing_slash, '') and you will still only get one trailing slash. share | improve this answer | follow ...
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How to discover number of *logical* cores on Mac OS X?

How can you tell, from the command line, how many cores are on the machine when you're running Mac OS X? On Linux, I use: ...
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Iterating over each line of ls -l output

... answered May 18 '10 at 18:50 Randy ProctorRandy Proctor 6,39011 gold badge2121 silver badges2626 bronze badges ...
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Choose File Dialog [closed]

... Add the ability to navigate folders and go up to parent folder, and you got it – Aymon Fournier Sep 7 '10 at 7:39 49 ...
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usr/bin/ld: cannot find -l

I'm trying to compile my program and it returns this error : 14 Answers 14 ...
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What are the main uses of yield(), and how does it differ from join() and interrupt()?

...ementation, the way that Thread.yield() works has changed between Java 5 and Java 6. In Java 5, Thread.yield() calls the Windows API call Sleep(0). This has the special effect of clearing the current thread's quantum and putting it to the end of the queue for its priority level. In other ...
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Difference between subprocess.Popen and os.system

What is the difference between subprocess.Popen() and os.system() ? 5 Answers 5 ...
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Bash: Strip trailing linebreak from output

When I execute commands in Bash (or to be specific, wc -l < log.txt ), the output contains a linebreak after it. How do I get rid of it? ...