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How to write inline if statement for print?
...on: statement
if condition:
block
if expression (introduced in Python 2.5)
expression_if_true if condition else expression_if_false
And note, that both print a and b = a are statements. Only the a part is an expression. So if you write
print a if b else 0
it means
print (a if b else 0)
...
Check if a given key already exists in a dictionary and increment it
...
You are looking for collections.defaultdict (available for Python 2.5+). This
from collections import defaultdict
my_dict = defaultdict(int)
my_dict[key] += 1
will do what you want.
For regular Python dicts, if there is no value for a given key, you will not get None when accessing the...
Find all controls in WPF Window by type
... what do you mean "root element" ? What should I write to connect with my mainwindow form?
– deadfish
Dec 30 '11 at 16:02
1
...
Max retries exceeded with URL in requests
...a resolver lookup issue, as indicated by the (Caused by <class 'socket.gaierror'>: [Errno -2] Name or service not known) part. "gai" stands for getaddrinfo, and the probable related error is: EAI_NONAME The node or service is not known; or both node and service are NULL; or AI_NUMERICSERV wa...
How to copy a file to a remote server in Python using SCP or SSH?
...: subprocess.check_call(['scp', srcfile, dest]) could be used since Python 2.5 instead of rc = Popen(..).wait(); if rc != 0: raise ..
– jfs
Mar 28 '14 at 10:37
...
How to give border to any element using css without adding border-width to the whole width of elemen
... case can you fudge it by subtracting half the border from the padding? (-2.5 from the padding if your border is 5px wide, you can't have negative padding so to go smaller reduce the overall width of the box). You can add an extra 2.5px to the margin to keep the overall box the same size.
I rea...
Symfony2 : How to get form validation errors after binding the request to the form
...$string = var_export($this->getErrorMessages($form), true);
Symfony 2.5 / 3.0:
$string = (string) $form->getErrors(true, false);
Docs:
https://github.com/symfony/symfony/blob/master/UPGRADE-2.5.md#form
https://github.com/symfony/symfony/blob/master/UPGRADE-3.0.md#form (at the bottom: Th...
Installing a local module using npm?
...package.json:
"name": "mymodule",
"peerDependencies":
{
"foo": "^2.5"
}
/dev/myproject/package.json:
"dependencies":
{
"mymodule": "file:/local/mymodule",
"foo": "^2.5"
}
In this scenario, npm sets up myproject's node_modules/ like this:
/dev/myproject/node_modules/
f...
Secure random token in Node.js
...
@Triforcey can you explain why you usually would want the async option?
– thomas
Jul 16 '19 at 5:17
2
...
What is the 'dynamic' type in C# 4.0 used for?
... between decimal and double.
decimal foo = GetDecimalValue();
foo = foo / 2.5; // Does not compile
foo = Math.Sqrt(foo); // Does not compile
string bar = foo.ToString("c");
The second line does not compile because 2.5 is typed as a double and line 3 does not compile because Math.Sqrt expects a do...