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Hashing a dictionary?
...hing needs to be consistent across different machines. Implementations of python on cloud platforms like Heroku and GAE will return different values for hash() on different instances making it useless for anything that must be shared between two or more "machines" (dynos in the case of heroku)
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How to join two sets in one line without using “|”
...;> from operator import or_
>>> from functools import reduce # python3 required
>>> reduce(or_, [{1, 2, 3, 4}, {3, 4, 5, 6}])
set([1, 2, 3, 4, 5, 6])
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test a file upload using rspec - rails
..." directory
before :each do
@file = fixture_file_upload('files/test_lic.xml', 'text/xml')
end
it "can upload a license" do
post :uploadLicense, :upload => @file
response.should be_success
end
In case you were expecting the file in the form of params['upload']['datafile']
it "can upload...
python-pandas and databases like mysql
... a DataFrame from it. SQLAlchemy makes it easier to combine SQL conditions Pythonically if you intend to mix and match things over and over.
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import Table
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionma...
Why can't I use a list as a dict key in python?
I'm a bit confused about what can/can't be used as a key for a python dict.
11 Answers
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How do I keep the screen on in my App? [duplicate]
...android/view/View.html#setKeepScreenOn(boolean)
2. Adding keepScreenOn to xml layout
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android...
What's the difference between globals(), locals(), and vars()?
... variables are copied into locals() again.
Two notes:
This behavior is CPython specific -- other Pythons may allow the updates to make it back to the local namespace automatically.
In CPython 2.x it is possible to make this work by putting an exec "pass" line in the function. This switches the fu...
Python - doctest vs. unittest [closed]
I'm trying to get started with unit testing in Python and I was wondering if someone could explain the advantages and disadvantages of doctest and unittest.
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Can't subtract offset-naive and offset-aware datetimes
...er. An answer involving ADDing the timezone info instead of removing it in python 3 is below. https://stackoverflow.com/a/25662061/93380
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Bare asterisk in function arguments?
...argument when you have no following keyword arguments.
See this answer or Python 3 documentation for more details.
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