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difference between variables inside and outside of __init__()
...ss. They're shared by all instances.
Variables created inside __init__ (and all other method functions) and prefaced with self. belong to the object instance.
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Is there a way to get the XPath in Google Chrome?
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I guess Chrome copied most of the Firebug command-line commands: getfirebug.com/wiki/index.php/Command_Line_API
– huyz
Sep 3 '11 at 8:35
102
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Is it possible to modify variable in python that is in outer, but not global, scope?
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For python 2, I usually just use a mutable object (like a list, or dict), and mutate the value instead of reassign.
example:
def foo():
a = []
def bar():
a.append(1)
bar()
bar()
print a
foo()
Outputs:
[1, 1]
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How to determine whether a given Linux is 32 bit or 64 bit?
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Try uname -m. Which is short of uname --machine and it outputs:
x86_64 ==> 64-bit kernel
i686 ==> 32-bit kernel
Otherwise, not for the Linux kernel, but for the CPU, you type:
cat /proc/cpuinfo
or:
grep flags /proc/cpuinfo
Under "flags" parameter, you w...
What's the easiest way to escape HTML in Python?
...ascii, so encode() will throw an exception at you.
– Andrew Kolesnikov
Jun 22 '10 at 15:56
@Andrew Kolesnikov: Have yo...
Union of dict objects in Python [duplicate]
...shahjapan This is not complex, this is great use of Python dict structure. And this is different from update (this solution is not updating anything).
– lajarre
Sep 13 '12 at 9:09
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Capitalize the first letter of both words in a two word string
Let's say that I have a two word string and I want to capitalize
both of them.
12 Answers
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How to convert ‘false’ to 0 and ‘true’ to 1 in Python
Is there a way to convert true of type unicode to 1 and false of type unicode to 0 (in Python)?
7 Answers
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C++: Rounding up to the nearest multiple of a number
OK - I'm almost embarrassed posting this here (and I will delete if anyone votes to close) as it seems like a basic question.
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Get the index of the object inside an array, matching a condition
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As of 2016, you're supposed to use Array.findIndex (an ES2015/ES6 standard) for this:
a = [
{prop1:"abc",prop2:"qwe"},
{prop1:"bnmb",prop2:"yutu"},
{prop1:"zxvz",prop2:"qwrq"}];
index = a.findIndex(x => x.prop2 ==="yutu");
console.log(index);
It's supported i...