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How to delete or add column in SQLITE?
...ecipe to do this does not preserve constraints & indices.
Here's some python code to do this generically, while maintaining all the key constraints and indices.
Please back-up your database before using! This function relies on doctoring the original CREATE TABLE statement and is potentially ...
Disable cache for some images
...date'
So in my case (serving dynamically generated images out of Flask in Python), I had to do the following to hopefully work in as many browsers as possible...
def make_uncached_response(inFile):
response = make_response(inFile)
response.headers['Pragma-Directive'] = 'no-cache'
respo...
How do I go straight to template, in Django's urls.py?
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matplotlib colorbar for scatter
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Regex to validate date format dd/mm/yyyy
...])|[13579][26])|([13579][26]|[02468][048])00)[-/]?02[-/]?29)$. Tested with python: repl.it/repls/DependentBestChapters
– kpr
Jan 16 '19 at 16:32
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How do I revert to a previous package in Anaconda?
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How can I strip the whitespace from Pandas DataFrame headers?
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How do you serialize a model instance in Django?
...r posters are correct: if you wanted the serialized form to be used with a python application that can query the database via Django's api, then you would wan to serialize a queryset with one object. If, on the other hand, what you need is a way to re-inflate the model instance somewhere else witho...
Is it valid to define functions in JSON results?
...the C-family of
languages, including C, C++, C#, Java, JavaScript, Perl, Python, and
many others. These properties make JSON an ideal data-interchange
language.
Look at the reason why:
When exchanging data between a browser and a server, the data can only
be text.
JSON is text, an...
How to fix “Incorrect string value” errors?
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"\xE4\xC5\xCC\xC9\xD3\xD8" isn't valid UTF-8. Tested using Python:
>>> "\xE4\xC5\xCC\xC9\xD3\xD8".decode("utf-8")
...
UnicodeDecodeError: 'utf8' codec can't decode bytes in position 0-2: invalid data
If you're looking for a way to avoid decoding errors within the database...