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Can't install PIL after Mac OS X 10.9
I've just updated my Mac OS to 10.9 and I discovered that some (all?) of my Python modules are not here anymore, especially the Image one.
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Finding Number of Cores in Java
...ly available to the JVM (at startup I guess). Using CPU affinity the user/OS can restrict the number of "cores" a JVM sees. You can even do it on a running JVM but I'm not too sure how this influence availableProcessors().
– SyntaxT3rr0r
Jan 21 '11 at 16:17
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How do I install pip on macOS or OS X?
I spent most of the day yesterday searching for a clear answer for installing pip (package manager for Python). I can't find a good solution.
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How to set Meld as git mergetool
...git config --global mergetool.meld.path C:/meld-1.6.0/Bin/meld.sh
With a script meld.sh:
#!/bin/env bash
C:/Python27/pythonw.exe C:/meld-1.6.0/bin/meld $@
abergmeier mentions in the comments:
I had to do:
git config --global merge.tool meld
git config --global mergetool.meld.path /c/Pr...
How accurate is python's time.sleep()?
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The accuracy of the time.sleep function depends on your underlying OS's sleep accuracy. For non-realtime OS's like a stock Windows the smallest interval you can sleep for is about 10-13ms. I have seen accurate sleeps within several milliseconds of that time when above the minimum 10-13ms.
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The source was not found, but some or all event logs could not be searched
...create a source. But that's probably an overkill.
I wrote this powershell script to create the event source at will. Save it as *.ps1 and run it with any privilege and it will elevate itself.
# CHECK OR RUN AS ADMIN
If (-NOT ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentit...
Node.js getaddrinfo ENOTFOUND
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My issue was that within my nodejs script I was making a request to the wrong url and this error was thrown.
– Michael J. Calkins
Dec 12 '13 at 6:36
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Is there a standard way to list names of Python modules in a package?
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Maybe this will do what you're looking for?
import imp
import os
MODULE_EXTENSIONS = ('.py', '.pyc', '.pyo')
def package_contents(package_name):
file, pathname, description = imp.find_module(package_name)
if file:
raise ImportError('Not a package: %r', package_name)
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How can I have grep not print out 'No such file or directory' errors?
... don't bother while doing sysadmin tasks over the console, but from within scripts I do look for text files with "find", and then grep each one:
find /etc -type f -exec grep -nHi -e "widehat" {} \;
Instead of:
grep -nRHi -e "widehat" /etc
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Redirecting stdout to “nothing” in python
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Cross-platform:
import os
import sys
f = open(os.devnull, 'w')
sys.stdout = f
On Windows:
f = open('nul', 'w')
sys.stdout = f
On Linux:
f = open('/dev/null', 'w')
sys.stdout = f
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