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How to check if a float value is a whole number
...gt; (1.555).is_integer()
False
The method was added to the float type in Python 2.6.
Take into account that in Python 2, 1/3 is 0 (floor division for integer operands!), and that floating point arithmetic can be imprecise (a float is an approximation using binary fractions, not a precise real num...
Filter dict to contain only certain keys?
...Uses dictionary comprehension.
If you use a version which lacks them (ie Python 2.6 and earlier), make it dict((your_key, old_dict[your_key]) for ...). It's the same, though uglier.
Note that this, unlike jnnnnn's version, has stable performance (depends only on number of your_keys) for old_dicts...
How to get POSTed JSON in Flask?
...
For reference, here's complete code for how to send json from a Python client:
import requests
res = requests.post('http://localhost:5000/api/add_message/1234', json={"mytext":"lalala"})
if res.ok:
print res.json()
The "json=" input will automatically set the content-type, as discu...
How do I get a substring of a string in Python?
Is there a way to substring a string in Python, to get a new string from the third character to the end of the string?
13 A...
“Private” (implementation) class in Python
I am coding a small Python module composed of two parts:
7 Answers
7
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Jaxb, Class has two properties of the same name
with jaxb, i try to read an xml file
only a few element in xml file are interesting, so i would like to skip many element
2...
How to override the copy/deepcopy operations for a Python object?
...y__ methods. I've already Googled around and looked through the built-in Python modules to look for instances of the __copy__ and __deepcopy__ functions (e.g. sets.py , decimal.py , and fractions.py ), but I'm still not 100% sure I've got it right.
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Django: How to manage development and production settings?
...Django documentation:
The value of DJANGO_SETTINGS_MODULE should be in Python path syntax, e.g. mysite.settings. Note that the settings module should be on the Python import search path.
So, let's assume you created myapp/production_settings.py and myapp/test_settings.py in your source reposit...
python numpy ValueError: operands could not be broadcast together with shapes
...
You are looking for np.matmul(X, y). In Python 3.5+ you can use X @ y.
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Tomcat startup logs - SEVERE: Error filterStart how to get a stack trace?
... approach:
Try to remove everything which can cause any problem from web.xml. You even can remove everything except tag. If application still cannot be deployed - go on.
Remove every *.xml descriptor from WEB-INF/classes. If application cannot be deployed - go on.
Remove all logging configuration...