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Create Django model or update if exists

...t answer Django already has a get_or_create, https://docs.djangoproject.com/en/dev/ref/models/querysets/#get-or-create For you it could be : id = 'some identifier' person, created = Person.objects.get_or_create(identifier=id) if created: # means you have created a new person else: # pers...
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Unique constraint on multiple columns

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Convert a string to regular expression ruby

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gitignore does not ignore folder

... This will completely remove the folder from the (current version of the) repo. OP wants the folder to be there, but new changes should not be tracked – Gareth Jun 25 '14 at 13:39 ...
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scp with port number specified

... original file. Update and aside to address one of the (heavily upvoted) comments: With regard to Abdull's comment about scp option order, what he suggests: scp -P80 -r some_directory -P 80 ... ..., intersperses options and parameters. getopt(1) clearly defines that parameters must come after...
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Need to ZIP an entire directory using Node.js

... answered Sep 12 '13 at 22:06 commadelimitedcommadelimited 4,73955 gold badges3535 silver badges6969 bronze badges ...
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What is the difference between Fragment and FragmentActivity?

... embedded in an Activity. Fragments are not part of the API prior to HoneyComb (3.0). If you want to use Fragments in an app targeting a platform version prior to HoneyComb, you need to add the Support Package to your project and use the FragmentActivity to hold your Fragments. The FragmentActivity...
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How do I configure PyCharm to run py.test tests?

... Also remember mark your source directory as a "sources root": jetbrains.com/pycharm/webhelp/content-root.html – Inti Mar 25 '14 at 11:57 1 ...
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What is meant by Ems? (Android TextView)

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Matplotlib - global legend and title aside subplots

... all subplots", fontsize=14) Alternatively (based on @Steven C. Howell's comment below (thank you!)), use the matplotlib.pyplot.suptitle() function: import matplotlib.pyplot as plt # plot stuff # ... plt.suptitle("Title centered above all subplots", fontsize=14) ...