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Python None comparison: should I use “is” or ==?
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@BallpointBen I think the key point is that Python possesses a strong concept of object identity. If you want to check whether an object compares equal to None, by all means use obj == None. If you want to check whether an object is None, use obj is None. The point of ...
What does the Ellipsis object do?
...le make up the full number of dimensions in the array).
Interestingly, in python3, the Ellipsis literal (...) is usable outside the slice syntax, so you can actually write:
>>> ...
Ellipsis
Other than the various numeric types, no, I don't think it's used. As far as I'm aware, it was ...
Installing Python packages from local file system folder to virtualenv with pip
...roject or package directory before it would work. This tripped me up. docs.python.org/3.6/distutils/sourcedist.html
– Josh
May 16 '18 at 21:04
3
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Python: Is it bad form to raise exceptions within __init__?
...is incomplete). This is often not the case in scripting languages, such as Python. For example, the following code throws an AttributeError if socket.connect() fails:
class NetworkInterface:
def __init__(self, address)
self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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Python Flask, how to set content type
...'}
Hope it helps
Update:
Use this method because it will work with both python 2.x and python 3.x
and secondly it also eliminates multiple header problem.
from flask import Response
r = Response(response="TEST OK", status=200, mimetype="application/xml")
r.headers["Content-Type"] = "text/xml; c...
AttributeError: 'module' object has no attribute 'tests'
...working.
To validate your test case just try import the test case file in python console.
Example:
from project.apps.app1.tests import *
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Open files in 'rt' and 'wt' modes
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Gotcha, it's documented in python3 docs. So, there is basically no difference between wt vs w and rt vs r - just explicit is better than implicit?
– alecxe
Apr 14 '14 at 2:38
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How to list only top level directories in Python?
...os.walk
Use os.walk with next item function:
next(os.walk('.'))[1]
For Python <=2.5 use:
os.walk('.').next()[1]
How this works
os.walk is a generator and calling next will get the first result in the form of a 3-tuple (dirpath, dirnames, filenames). Thus the [1] index returns only the dir...
How to break out of multiple loops?
... is the right approach. And the reasoning is that, according to the Zen of Python, "flat is better than nested". We have three levels of nesting here and if that starts to get in the way, it is time to reduce the nesting or at least extract the whole nesting into a function of its own.
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Should I hash the password before sending it to the server side?
...s and salts should never be exposed.
– Levente Pánczél
May 27 '14 at 10:09
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