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Python list of dictionaries search
... 3.6.4, W7x64.
from random import randint
from timeit import timeit
list_dicts = []
for _ in range(1000): # number of dicts in the list
dict_tmp = {}
for i in range(10): # number of keys for each dict
dict_tmp[f"key{i}"] = randint(0,50)
list_dicts.append( dict_tmp )
d...
Remove characters except digits from string using Python?
...ion of "everything but" a few characters:
import string
class Del:
def __init__(self, keep=string.digits):
self.comp = dict((ord(c),c) for c in keep)
def __getitem__(self, k):
return self.comp.get(k)
DD = Del()
x='aaa12333bb445bb54b5b52'
x.translate(DD)
also emits '1233344554552'. ...
Android Notification Sound
... code:
Uri alarmSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
builder.setSound(alarmSound);
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Mac zip compress without __MACOSX folder?
... built in zip compressor in Mac OSX, it results in an extra folder titled "__MACOSX" created in the extracted zip.
13 Answe...
Convert string to symbol-able in ruby
...oking at. For your example:
'Book Author Title'.parameterize.underscore.to_sym # :book_author_title
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Convert datetime object to a String of date only in Python
...
If you want the time as well, just go with
datetime.datetime.now().__str__()
Prints 2019-07-11 19:36:31.118766 in console for me
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Sanitizing strings to make them URL and filename safe?
...//github.com/OWASP/PHP-ESAPI
https://www.owasp.org/index.php/Category:OWASP_Enterprise_Security_API
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Create a CSV File for a user in PHP
...!== false || strpos($string, "\n") !== false) {
$string = '"' . str_replace('"', '""', $string) . '"';
}
return $string;
}
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How to overcome TypeError: unhashable type: 'list'
... keys during a dictionary lookup quickly.
Internally, hash() method calls __hash__() method of an object which are set by default for any object.
Converting a nested list to a set
>>> a = [1,2,3,4,[5,6,7],8,9]
>>> set(a)
Traceback (most recent call last):
File "<stdin>",...
How to filter a dictionary according to an arbitrary condition function?
...
points_small = dict(filter(lambda (a,(b,c)): b<5 and c < 5, points.items()))
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