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Django migration strategy for renaming a model and relationship fields

...ome errors if you don't update the names where it's imported e.g. admin.py and even older migration files (!). Update: As ceasaro mentions, newer versions of Django are usually able to detect and ask if a model is renamed. So try manage.py makemigrations first and then check the migration file. ...
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How to reshape data from long to wide format

... +1 and you don't need to rely on external packages, since reshape comes with stats. Not to mention that it's faster! =) – aL3xa May 5 '11 at 0:07 ...
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Can someone explain __all__ in Python?

I have been using Python more and more, and I keep seeing the variable __all__ set in different __init__.py files. Can someone explain what this does? ...
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Finding diff between current and last version

Using Git, how can you find the difference between the current and the last version? 12 Answers ...
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What's the difference between %s and %d in Python string formatting?

I don't understand what %s and %d do and how they work. 12 Answers 12 ...
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How do you debug a regex? [closed]

... You buy RegexBuddy and use its built in debug feature. If you work with regexes more than twice a year, you will make this money back in time saved in no time. RegexBuddy will also help you to create simple and complex regular expressions, and...
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How to wait in bash for several subprocesses to finish and return exit code !=0 when any subprocess

... a bash script for several subprocesses spawned from that script to finish and return exit code !=0 when any of the subprocesses ends with code !=0 ? ...
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Rename Pandas DataFrame Index

...csv file without header, with a DateTime index. I want to rename the index and column name, but with df.rename() only the column name is renamed. Bug? I'm on version 0.12.0 ...
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Exploitable PHP functions

...lowed. Rather, I'd like to have a grep -able list of red-flag keywords handy when searching a compromised server for back-doors. ...
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Is there a difference between copy initialization and direct initialization?

...d require an object to exist). As examples in our case, in the case of a1 and a2 special rules say that in such declarations, the result object of a prvalue initializer of the same type as a1 is variable a1, and therefore A_factory_func() directly initializes the object a1. Any intermediary functio...