是否可以在CSS中使用内联SVG定义?
我的意思是:
.my-class {
background-image: <svg>...</svg>;
}
Run Code Online (Sandbox Code Playgroud) 我正在使用mac os x并尝试设置pycallgraph.
我已经用pip和graphviz安装了pycallgraph和自制软件.
一切都是从shell开始的.但不是来自pycharm.
from pycallgraph import PyCallGraph
from pycallgraph import Config
from pycallgraph import GlobbingFilter
from pycallgraph.output import GraphvizOutput
config = Config()
config.trace_filter = GlobbingFilter(exclude=[
'pycallgraph.*',
])
graphviz = GraphvizOutput(output_file='filter_exclude.png')
with PyCallGraph(output=graphviz, config=config):
def my_fun():
print "HELLO"
my_fun()
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/Users/user/Projects/py27/bin/python /Users/user/Projects/py27_django/test2.py
Traceback (most recent call last):
File "/Users/user/Projects/py27_django/test2.py", line 15, in <module>
with PyCallGraph(output=graphviz, config=config):
File "/Users/user/Projects/py27/lib/python2.7/site-packages/pycallgraph/pycallgraph.py", line 32, in __init__
self.reset()
File "/Users/user/Projects/py27/lib/python2.7/site-packages/pycallgraph/pycallgraph.py", line 53, in reset
self.prepare_output(output)
File "/Users/user/Projects/py27/lib/python2.7/site-packages/pycallgraph/pycallgraph.py", line 97, in prepare_output
output.sanity_check()
File "/Users/user/Projects/py27/lib/python2.7/site-packages/pycallgraph/output/graphviz.py", line …
Run Code Online (Sandbox Code Playgroud) 我正在做一个非常简单的概率计算,即从AZ集(具有相应的概率x,y,z)中获取X,Y,Z的子集。
而且由于非常沉重的公式,以处理它们,我想简化(或收集或因子使用这些多项式-我不知道确切的定义)sympy。
因此..(具有从具有对应概率x,y,z的AZ集合中获得X,Y,Z子集的非常简单的概率计算表达式)
import sympy as sp
x, y, z = sp.symbols('x y z')
expression = (
x * (1 - x) * y * (1 - x - y) * z +
x * (1 - x) * z * (1 - x - z) * y +
y * (1 - y) * x * (1 - y - x) * z +
y * (1 - y) * z …
Run Code Online (Sandbox Code Playgroud) 我正在用蓝图测试Flask.我的应用有两个蓝图:
碱/ __ init__.py
base = Blueprint('base', __name__, static_folder='static', template_folder='templates')
#http://server.com/base
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意见/ __ init__.py
opinions = Blueprint('opinions', __name__, static_folder='static', template_folder='templates')
#http://server.com/opinions
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__init__.py
app = Flask(__name__)
from app.base import views
from app.base import base
app.register_blueprint(base, url_prefix='/base')
from app.opinions import views
from app.opinions import opinions
#app.register_blueprint(opinions, url_prefix='/opinions') <-- Uncommenting this line causes issues
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如果我只注册其中一个蓝图,一切运行正常.但是,如果我同时注册两个蓝图,则始终会加载模板opinions
.例如,如果我点击http://server.com/base,则会从views文件夹中选择index.html.Flask文档没有提到任何关于'template_folder'命名空间冲突的内容.
PS - 我想知道处理多个蓝图的其他方法.我不太习惯views
从两个不同的蓝图导入文件.什么是更好的方法呢?
如何在 Matplolib 3D 图中获得 X、Y 和 Z 轴的等距缩放?
我已经尝试过这个:
ax = fig.add_subplot(111, projection='3d', aspect='equal')
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但这只会导致 X 轴和 Y 轴等距缩放。我如何将其应用于所有三个轴?
谢谢!
没找到完整的答案..
承诺产生后会发生什么?
就是这样的建筑
var p = new Promise()
p.resolve(value)
function * (){
yield p
}
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相当于
function * (){
yield value
}
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?
UPDATE
如何混合不同风格的异步编程,例如像koa这样的框架?
Koa中间件正在使用生成器,但是有很多好的包是基于promise的(例如,sequelize)
通过执行类似于this(d3.select(..).append("div")
)的代码,我得到div
了这样的样式属性:
<div id="id6"
style="
background-image: initial;
background-attachment: initial;
background-origin: initial;
background-clip: initial;
background-color: rgb(255, 255, 255);
background-position: initial initial;
background-repeat: initial initial; ">
5
</div>
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问题:
initial
来自哪里?b)是否有可能重新定义"默认值"?background-position: initial initial;
而且
background-repeat: initial initial;
是Invalid property value
.这是d3的错误吗?我们如何处理这个错误?我想知道如何从承诺中回报承诺.例如
我有这样的结构:
doAsyncStuff() // a promise
.then( function(res) {
doAnotherAsyncStuff(res) // another promise
.then( makeSomeThings )
.then( function(anotherRes, opts) {
...
})
})
.then( ... )
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我想这样写:
doAsyncStuff() // a promise
.then( function(res) {
doAnotherAsyncStuff(res) // another promise
.then( makeSomeThings )
// and somehow push-out promise
})
.then( function(anotherRes) {
...
})
.then( ... )
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我怎样才能达到这样的效果?
问题的事情
var Promise = require('bluebird');
//noinspection JSUnresolvedFunction
var bcrypt = Promise.promisifyAll(require('bcrypt'));
var Sequelize = require('sequelize');
var config = require('config');
var sequelize = new Sequelize(config.get('db.connstring')); …
Run Code Online (Sandbox Code Playgroud) python ×4
javascript ×3
css ×2
promise ×2
background ×1
d3.js ×1
flask ×1
koa ×1
matplotlib ×1
plot ×1
pycharm ×1
styles ×1
svg ×1
sympy ×1
yield ×1