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Unique fields that allow nulls in Django
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** edit 11/30/2015: In python 3, the module-global __metaclass__ variable is no longer supported.
Additionaly, as of Django 1.10 the SubfieldBase class was deprecated:
from the docs:
django.db.models.fields.subclassing.SubfieldBase has be...
Emulate a do-while loop in Python?
I need to emulate a do-while loop in a Python program. Unfortunately, the following straightforward code does not work:
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SHA-1 fingerprint of keystore certificate
... android studio New -> Google Maps Activity
then open google_maps_api.xml xml file as shown in pics you will see your SHA key
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How to take the first N items from a generator or list in Python? [duplicate]
... # grab the first five elements
You can't slice a generator directly in Python. itertools.islice() will wrap an object in a new slicing generator using the syntax itertools.islice(generator, start, stop, step)
Remember, slicing a generator will exhaust it partially. If you want to keep the entire...
Non-alphanumeric list order from os.listdir()
I often use python to process directories of data. Recently, I have noticed that the default order of the lists has changed to something almost nonsensical. For example, if I am in a current directory containing the following subdirectories: run01, run02, ... run19, run20, and then I generate a list...
How to pass a user defined argument in scrapy spider
...www.example.com/{category}'] # py36
super().__init__(**kwargs) # python3
def parse(self, response)
self.log(self.domain) # system
Taken from the Scrapy doc: http://doc.scrapy.org/en/latest/topics/spiders.html#spider-arguments
Update 2013: Add second argument
Update 2015: ...
Android: AutoCompleteTextView show suggestions when no text entered
... performFiltering(getText(), 0);
}
}
}
Use it in your xml like this:
<your.namespace.InstantAutoComplete ... />
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CreateProcess error=206, The filename or extension is too long when running main() method
... @PrateekNarendra you'd add it in your ant buildfile (build.xml): ant.apache.org/manual/Tasks/javadoc.html
– Brad Mace
Apr 17 '17 at 14:12
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How can I record a Video in my Android App.?
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please also post xml file
– Nirav Ranpara
Dec 5 '12 at 7:33
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Open the file in universal-newline mode using the CSV Django module
...am trying to access a model.filefield in Django to parse a CSV file in Python using the csv module. It's working on Windows, but on Mac it gave me this:
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