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import module from string variable

...om a string, and get the same behavior as just import. And try/except the error case, too. :) pipmodules = ['pycurl', 'ansible', 'bad_module_no_beer'] for module in pipmodules: try: # because we want to import using a variable, do it this way module_obj = __import__(m...
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Cannot create an NSPersistentStoreCoordinator with a nil model

Been having my first crack at Core Data and I'm getting the following error when running my code on my device, but it works fine on the simulator.. ...
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How can I run a PHP script in the background after a form is submitted?

...inoisstate.edu/2049 (SCRIPT: 38.71 seconds) [2011-01-07 11:01:34] CRITICAL ERROR: Alert Notifications NOT sent for http://alerts.illinoisstate.edu/2049 (SCRIPT: 23.12 seconds) share | improve this ...
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How can I filter a date of a DateTimeField in Django?

...ised it got 4 upvotes, because when I try the contains solution, I get the error message: Unable to get repr for <class 'django.db.models.query.QuerySet'> – Houman Jan 13 '13 at 13:13 ...
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Codesign error: Provisioning profile cannot be found after deleting expired profile

...When I chose a new profile (one with an * in the identifier), I now get an error: 16 Answers ...
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What are the “standard unambiguous date” formats for string-to-date conversion in R?

...' then '"%Y/%m/%d"' on the first non-'NA' element, and give an error if neither works. as.Date("01 Jan 2000") yields an error because the format isn't one of the two listed above. as.Date("01/01/2000") yields an incorrect answer because the date isn't in one of the two formats listed...
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How to write a multidimensional array to a text file?

...est.txt', x) While the same thing would fail (with a rather uninformative error: TypeError: float argument required, not numpy.ndarray) for a 3D array: import numpy as np x = np.arange(200).reshape((4,5,10)) np.savetxt('test.txt', x) One workaround is just to break the 3D (or greater) array into 2...
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Why does @foo.setter in Python not work for me?

...t; File "/devel/class_test.py", line 6, in x return self._x AttributeError: 'testDec' object has no attribute '_x' >>> k.x = 5 called setter >>> k.x called getter 5 >>> Another detail that might cause problems is that both methods need the same name for the proper...
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Simplest code for array intersection in javascript

... There's numerous errors in intersect_safe: length is a property in Arrays, not a method. There's an undelared variable i in result.push(a[i]);. Finally, this simply doesn't work in the general case: two objects where neither is greater than t...
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Elegant way to check for missing packages and install them?

... work, at least for me. When I tried the robust version of this, I get two error messages as R doesn't know how to handle "return True" and "return eval" for some reason. So I would really like a function like this that loads a package if present in my library and otherwise installs (and afterwards ...