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`staticmethod` and `abc.abstractmethod`: Will it blend?
In my Python app I want to make a method that is both a staticmethod and an abc.abstractmethod . How do I do this?
4 Ans...
How do I deal with certificates using cURL while trying to access an HTTPS url?
...r is related to a missing package: ca-certificates. Install it.
In Ubuntu Linux (and similar distro):
# apt-get install ca-certificates
In CygWin via Apt-Cyg
# apt-cyg install ca-certificates
In Arch Linux (Raspberry Pi)
# pacman -S ca-certificates
The documentation tells:
This packa...
Why doesn't print work in a lambda?
...
A lambda's body has to be a single expression. In Python 2.x, print is a statement. However, in Python 3, print is a function (and a function application is an expression, so it will work in a lambda). You can (and should, for forward compatibility :) use the back-ported pri...
Removing a list of characters in string
I want to remove characters in a string in python:
18 Answers
18
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Python Regex - How to Get Positions and Values of Matches
...m.group()
'message'
>>> m.span()
(4, 11)
Combine that with:
In Python 2.2, the finditer() method is also available, returning a sequence of MatchObject instances as an iterator.
>>> p = re.compile( ... )
>>> iterator = p.finditer('12 drummers drumming, 11 ... 10 ...')
...
How can I get the concatenation of two lists in Python without modifying either one? [duplicate]
In Python, the only way I can find to concatenate two lists is list.extend , which modifies the first list. Is there any concatenation function that returns its result without modifying its arguments?
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Why do some functions have underscores “__” before and after the function name?
...seems to occur a lot, and I was wondering if this was a requirement in the Python language, or merely a matter of convention?
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How do I disable the security certificate check in Python requests
...session.get('https://wrong.host.badssl.com/', verify=False)
/usr/local/lib/python3.7/site-packages/urllib3/connectionpool.py:857: InsecureRequestWarning: Unverified HTTPS request is being made. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advance...
How to capture stdout output from a Python function call?
I'm using a Python library that does something to an object
3 Answers
3
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How do I get the opposite (negation) of a Boolean in Python?
...ll __bool__ on the object.
So by implementing __bool__ (or __nonzero__ in Python 2) you can customize the truth value and thus the result of not:
class Test(object):
def __init__(self, value):
self._value = value
def __bool__(self):
print('__bool__ called on {!r}'.format(s...