大约有 9,000 项符合查询结果（耗时：0.0259秒） [XML]
How to check if all of the following items are in a list?
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Operators like <= in Python are generally not overriden to mean something significantly different than "less than or equal to". It's unusual for the standard library does this--it smells like legacy API to me.
Use the equivalent and more clearl...
UITableView Cell selected Color?
...gray // You can also use .none, .blue or .default
– Sébastien REMY
Jan 8 '17 at 20:48
7
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matplotlib Legend Markers Only Once
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I like to change my matplotlib rc parameters dynamically in every python script. To achieve this goal I simply use somthing like that at the beginning of my python files.
from pylab import *
rcParams['legend.numpoints'] = 1
This will apply to all plots generated from my python file.
EDI...
Verify version of rabbitmq
..._properties.items():
print k, v
Save as checkVersion.py and run with python checkVersion.py dev.rabbitmq.com:
% python checkVersion.py dev.rabbitmq.com
information Licensed under the MPL. See http://www.rabbitmq.com/
product RabbitMQ
copyright Copyright (C) 2007-2011 VMware, Inc.
capabilitie...
Why does (1 in [1,0] == True) evaluate to False?
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Python actually applies comparison operator chaining here. The expression is translated to
(1 in [1, 0]) and ([1, 0] == True)
which is obviously False.
This also happens for expressions like
a < b < c
which tran...
How to trick an application into thinking its stdout is a terminal, not a pipe
... is amazing. I needed this for an extremely rare use case with an embedded Python library within an executable that is run within Wine. When I ran in a terminal it worked but when I ran the .desktop file I created it would always crash because Py_Initialize didn't see proper stdin/stderr.
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How to append output to the end of a text file
...othySwan, I believe with the -e option.
– Valentin Grégoire
Mar 5 '18 at 7:44
echo does not remove newlines from the ...
How to extract the decision rules from scikit-learn decision-tree?
...at(indent, tree_.value[node])
recurse(0, 1)
This prints out a valid Python function. Here's an example output for a tree that is trying to return its input, a number between 0 and 10.
def tree(f0):
if f0 <= 6.0:
if f0 <= 1.5:
return [[ 0.]]
else: # if f0 > 1.5
...
Why doesn't Objective-C support private methods?
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More python being "obj-c-ic" :). Guido was quite proactive in maintaining Python on NeXT systems, including creating the 1st version of PyObjC. Thus, ObjC did influence python somewhat.
– bbum
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What's so great about Lisp? [closed]
...You could in theory embed any language into Lisp like Rust, Ruby, C, Java, Python, Erlang. So the s-expression version of Python (Hy) and the of Rust is called (Risp) [although I don't know how stable these are]. If you write code in Hy instead of Python you have the ability of macros and structur...