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Python circular importing?
... get away with it. But when one of your co-workers innocently changes the order of definitions in a third module, the code will break.
In some cases you can resolve circular dependencies by moving an import statement down below symbol definitions needed by other modules. In the examples above, def...
Can I set background image and opacity in the same property?
...y and how to set a background image . But how can I combine these two in order to set a transparent background image?
14 ...
Sequelize.js: how to use migrations and sync
...igration that you are talking about. All you have to do is to call sync in order to create the tables.
sequelize.sync()
You can also run a simple model synchronization by doing something like:
Project.sync() but I think that sequelize.sync() is a more useful general case for your project (as long...
How to construct a set out of list items in python?
...on 3,
my_list = [*my_set]
to create a list from a set.
Just note that the order of the elements in a list is generally lost when converting the list to a set since a set is inherently unordered. (One exception in CPython, though, seems to be if the list consists only of non-negative integers, but I...
How to save all the variables in the current python session?
...
If you use shelve, you do not have to remember the order in which the objects are pickled, since shelve gives you a dictionary-like object:
To shelve your work:
import shelve
T='Hiya'
val=[1,2,3]
filename='/tmp/shelve.out'
my_shelf = shelve.open(filename,'n') # 'n' for ne...
PHP's array_map including keys
...
Nice, thanks. In order to avoid messing the original array, here's what I eventually did (look my answer below)
– José Tomás Tocino
Oct 23 '12 at 21:08
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Returning a value from thread?
...ne thread sets the variable and exactly one thread reads it, and the exact order of set vs. read does not matter to the correct execution of the code (i.e. the termination condition might occur in the main thread slightly earlier or later depending on the order the threads are scheduled in, but eith...
Convert string with comma to integer
...application, when converting a currency amount that the user has input, in order to deal with only integers inside the application: for instance, converting dollars and cents to cents. This method will avoid any rounding errors that might crop up unexpectedly when dealing with floating-point numbers...
How do I expand the output display to see more columns of a pandas DataFrame?
...
In order to set no limits, None can be used (instead of 999, etc.).
– Eric O Lebigot
Sep 14 '17 at 19:27
5
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Any reason not to use '+' to concatenate two strings?
...rofile.run("UsePlus()")
5 function calls in 0.001 CPU seconds
Ordered by: standard name
ncalls tottime percall cumtime percall filename:lineno(function)
1 0.001 0.001 0.001 0.001 <pyshell#1376>:1(UsePlus)
1 0.000 0.000 0.001 0.001 &l...