大约有 9,800 项符合查询结果（耗时：0.0184秒） [XML]
In Python, when to use a Dictionary, List or Set?
...dict, if for some weird reason you couldn't import collections, or, in pre-2.7 Python as a collections.defaultdict(int), using the items as keys and the associated value as the count).
Checking for membership of a value in a set (or dict, for keys) is blazingly fast (taking about a constant, short ...
Python argparse ignore unrecognised arguments
... works with parse_args() and doesn't require parse_known_args() (on Python 2.7).
– OozeMeister
May 3 '17 at 18:04
4
...
Reloading module giving NameError: name 'reload' is not defined
...on versions 2 and 3, you can use the following:
try:
reload # Python 2.7
except NameError:
try:
from importlib import reload # Python 3.4+
except ImportError:
from imp import reload # Python 3.0 - 3.3
...
What is Python buffer type for?
...e better named memoryview in Python 3, though you can use either in Python 2.7.
Note also that you can't implement a buffer interface for your own objects without delving into the C API, i.e. you can't do it in pure Python.
...
How to run multiple Python versions on Windows
... This is the answer I'm looking for. I run Windows 10 with Python 2.7 and Python 3.4.3. In command prompt type in "py [python_version_number]" ex: py -3 or py will invoke the python version you have. I think environment variables must be set before you use this. this is convenient for me.
...
Difference between “git add -A” and “git add .”
...s like git add :/ (add everything from top git repo folder).
Note that git 2.7 (Nov. 2015) will allow you to add a folder named ":"!
See commit 29abb33 (25 Oct 2015) by Junio C Hamano (gitster).
Note that starting git 2.0 (Q1 or Q2 2014), when talking about git add . (current path within the wo...
Find the most common element in a list
...
Borrowing from here, this can be used with Python 2.7:
from collections import Counter
def Most_Common(lst):
data = Counter(lst)
return data.most_common(1)[0][0]
Works around 4-6 times faster than Alex's solutions, and is 50 times faster than the one-liner propos...
Update built-in vim on Mac OS X
...ith-python-config-dir=/System/Library/Frameworks/Python.framework/Versions/2.7
– Ain Tohvri
Feb 9 '14 at 13:27
"Voila!...
assertEquals vs. assertEqual in python
...
Not just for Python 3.x, since Python 2.7 assertEquals has been deprecated as well:
Method Name | Deprecated alias(es)
_________________________________________________________
assertEqual() | failUnlessEqual, assertEquals
From 25.3.7.1.1. ...
Convert timedelta to total seconds
...
New in python 2.7
– Evgeny
Jun 6 '13 at 14:43
7
...