大约有 40,000 项符合查询结果（耗时：0.0572秒） [XML]
Convert nested Python dict to object?
...; s.a
1
>>> s.b
{'c': 2}
>>> s.c
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: 'MyStruct' object has no attribute 'c'
>>> s.d
['hi']
The alternative (original answer contents) is:
class Struct:
def __init__(self...
Why is a div with “display: table-cell;” not affected by margin?
...
Cause
From the MDN documentation:
[The margin property] applies to all elements except elements with
table display types other than table-caption, table and inline-table
In other words, the margin property is not applicable to display:table-cell elements.
Solution
Consider using the bo...
putting current class as return type annotation [duplicate]
...e. Instead, they are preserved in __annotations__ in string form. This is called Postponed Evaluation of Annotations, introduced in PEP 563.
Also note:
Deprecation policy
Starting with Python 3.7, a __future__ import is required to use the
described functionality. No warnings are raised...
Code equivalent to the 'let' keyword in chained LINQ extension method calls
...ect val
).Dump();
produces
System.Collections.Generic.List`1[System.Int32]
.Select(
val =>
new
{
val = val,
val1 = val
}
)
.Select(
temp0 =>
new
{
temp0 = temp0,
val2 = (temp0.val + 1)
}
)
.Where(temp1 => (temp1.val2 ...
Unique fields that allow nulls in Django
...on):
– Phil Gyford
Mar 15 '18 at 14:32
1
The comment from @PhilGyford applies as of 2.0.
...
Why are floating point numbers inaccurate?
...ted a lot like scientific notation: with an exponent and a mantissa (also called the significand). A very simple number, say 9.2, is actually this fraction:
5179139571476070 * 2 -49
Where the exponent is -49 and the mantissa is 5179139571476070. The reason it is impossible to represent some de...
TemplateDoesNotExist - Django Error
...lScott Woodall
9,12533 gold badges3030 silver badges3232 bronze badges
...
How to go to each directory and execute a command?
...oesn't match anything else than numbers, but in the general case, you basically always want to put the directory name in double quotes inside the loop. cd "$d" would be better in that it transfers to situations where the wildcard does match files whose names contain whitespace and/or shell metachar...
Install Gem from Github Branch?
...
You don't need to build the gem locally. In your gemfile you can specify a github source with a ref, branch or tag.
gem 'rails', :git => "git://github.com/rails/rails.git", :ref => "4aded"
gem 'rails', :git => "git://github.com/rails/rails.git", :bra...
Show pop-ups the most elegant way
...lar-ui.github.com/bootstrap/) has an excellent $modal service (used to be called $dialog prior to version 0.6.0) that is an implementation of a service to display partial's content as a modal popup.
share
|
...