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How to import a module given its name as string?

...mand" modules makes his/her whole command-app fail on one exception. Personally I'd for loop over each import individually wrapped in a try: mods=__import__()\nexcept ImportError as error: report(error) to allow other commands to continue to work while the bad ones get fixed. –...
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Parse config files, environment, and command-line arguments, to get a single collection of options

...d-line argument parsing ( argparse ). I want to write a program that does all those, and also: 11 Answers ...
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How to terminate a Python script

...ed by raising the SystemExit exception, so cleanup actions specified by finally clauses of try statements are honored, and it is possible to intercept the exit attempt at an outer level. The optional argument arg can be an integer giving the exit status (defaulting to zero), or another type of obj...
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python: Change the scripts working directory to the script's own directory

... __file__ fails in "frozen" programs (created using py2exe, PyInstaller, cx_Freeze). sys.argv[0] works. @ChrisDown: If you want to follow symlinks; os.path.realpath() could be used. – jfs Apr 5 '14 at 20:12 ...
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How can I change Mac OS's default Java VM returned from /usr/libexec/java_home

...'`" But standard double-clickable application bundles don't use JDKs installed under /Library/Java at all. Old-style .app bundles using Apple's JavaApplicationStub will use Apple Java 6 from /System/Library/Frameworks, and new-style ones built with AppBundler without a bundled JRE will use the "p...
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How to get an absolute file path in Python

... Note: On most platforms, this is equivalent to calling the function normpath() as follows: normpath(join(os.getcwd(), path)). So if mydir/myfile.txt do not under os.getcwd(), the absolute path is not the real path. – coanor Nov 25 '14...
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How to detect if app is being built for device or simulator in Swift

... ... #endif After Swift 4.1 version Latest use, now directly for all in one condition for all types of simulators need to apply only one condition - #if targetEnvironment(simulator) // your simulator code #else // your real device code #endif For more clarification, you can check S...
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How to import a Python class that is in a directory above?

...on __file__ to find out the parent directory (a couple of os.path.dirname calls will do;-), then (if that directory is not already on sys.path) prepend temporarily insert said dir at the very start of sys.path, __import__, remove said dir again -- messy work indeed, but, "when you must, you must" (a...
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Maven Install on Mac OS X

I'm trying to install maven through the terminal by following these instructions . 24 Answers ...
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Running unittest with typical test directory structure

...on -m unittest test.test_antigravity.GravityTestCase.test_method Running all tests: You can also use test discovery which will discover and run all the tests for you, they must be modules or packages named test*.py (can be changed with the -p, --pattern flag): $ cd new_project $ python -m unitte...