大约有 15,640 项符合查询结果（耗时：0.0304秒） [XML]
Normal arguments vs. keyword arguments
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For me print 'a:%s, b:%s, c:%s' % (a, b, c) gives syntax error, however print('a:%s, b:%s, c:%s' % (a, b, c)) works. Something with Python version ? Anyway thanks for this insight, until now I was using the more clunky print('a:{}, b:{}, c:{}'.format(a, b, c))
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Is it possible to use 'else' in a list comprehension? [duplicate]
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print(newlist2, type(newlist2))
This is tried and tested on python 3.4.
Error is as below:
newlist2 = [x if x > 30 else pass for x in list1 ]
SyntaxError: invalid syntax
So, try to avoid pass-es in list comprehensions
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How to create a directory and give permission in single command
...respectively):
...set[s] file mode (as in chmod), not a=rwx - umask
...no error if existing, make parent directories as needed
The statements are vague and unclear in my opinion. But basically, it says that you can make the directory with permissions specified by "chmod numeric notation" (octals) ...
How can I test that a value is “greater than or equal to” in Jasmine?
... @hashchange With a plugin such as jasmine2-custom-message, the error message can be customised: since('expected percent to be greater than or equal to zero').expect(percent >= 0).toBeTruthy();
– TachyonVortex
Aug 20 '15 at 9:41
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[精华]VC++对话框程序打印及打印预览的实现 - C/C++ - 清泛网 - 专注C/C++及内核技术
...iew也可，这样就无需写CMyPreviewView类了
{
TRACE0("Error: DoPrintPreview failed.\n");
AfxMessageBox(AFX_IDP_COMMAND_FAILURE);
delete pState;
}
}
注：RUNTIME_CLASS(CMyPreviewView)，直接使用基类CPreviewView也可，这样就无需写CMyPreviewV...
How to simulate a mouse click using JavaScript?
...ntType = name; break; }
}
if (!eventType)
throw new SyntaxError('Only HTMLEvents and MouseEvents interfaces are supported');
if (document.createEvent)
{
oEvent = document.createEvent(eventType);
if (eventType == 'HTMLEvents')
{
oEvent.ini...
Programmatically access currency exchange rates [closed]
...y will look like this:
{lhs: "1 British pound",rhs: "1.6132 U.S. dollars",error: "",icc: true}
This is pretty self-explanatory, so I won't go into details here. This is how I handled the query response:
function convert_currency($amount, $from_code, $to_code){
ini_set('max_execution_time', 6...
Postgres: SQL to list table foreign keys
...'mytable' should be tc.table_name='mytable' or else it throws an ambiguous error
– intrepion
Jul 15 '11 at 23:50
15
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Difference between Activity Context and Application Context
...activity that is necessary to complete those calls. If you show the exact error message, might be able to point to what exactly it needs.
But in general, use the activity context unless you have a good reason not to.
sha...
Is there a way to get colored text in Github Flavored Markdown? [duplicate]
...t, which may not be in any formal language at all (e.g. highlighting in an error message).
– Ken Williams
Oct 27 '15 at 18:05
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