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if/else in a list comprehension
... can alleviate these concerns:
row = [None, 'This', 'is', 'a', 'filler', 'test', 'string', None]
d = {None: '', 'filler': 'manipulated'}
res = [d.get(x, x) for x in row]
print(res)
['', 'This', 'is', 'a', 'manipulated', 'test', 'string', '']
...
Deleting queues in RabbitMQ
...json' and provide the vhost and queue name:
I.E. Using curl with a vhost 'test' and queue name 'testqueue':
$ curl -i -u guest:guest -H "content-type:application/json" -XDELETE http://localhost:15672/api/queues/test/testqueue
HTTP/1.1 204 No Content
Server: MochiWeb/1.1 WebMachine/1.9.0 (someone h...
UnicodeDecodeError: 'utf8' codec can't decode byte 0x9c
...d ' " " which is inch. I did 2 things to figure out. a) df = pd.read_csv('test.csv', n_rows=10000). This worked perfectly without the engine. So i incremented the n_rows to figure out which row had error. b) df = pd.read_csv('test.csv', engine='python') . This worked and i printed the errored row...
Profiling Django
..., I find it's very easy to use the shell in tandem with Django's fantastic test Client for generating profile logs on-the-fly, especially in production. I've used this technique now on several occasions because it has a light touch — no pesky middleware or third-party Django applications are requi...
How to inspect FormData?
...support using FormData.entries() to inspect FormData. Source.
// Create a test FormData object
var formData = new FormData();
formData.append('key1', 'value1');
formData.append('key2', 'value2');
// Display the key/value pairs
for (var pair of formData.entries()) {
console.log(pair[0]+ ', ' + ...
event.preventDefault() vs. return false
...ent handler, it does both, because that's a jQuery thing. Details and live tests here
– T.J. Crowder
Nov 30 '11 at 13:09
...
What is the difference between ng-app and data-ng-app?
...m reading this the data- can be used to make your HTML pass HTML validator tests/
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Regular expression to match standard 10 digit phone number
...-*\.*(\d{3})\)?\.*-*\s*(\d{3})\.*-*\s*(\d{4})$
Replace: +1 \($1\) $2-$3
Tested against the following use cases.
18001234567
1 800 123 4567
1-800-123-4567
+18001234567
+1 800 123 4567
+1 (800) 123 4567
1(800)1234567
+1800 1234567
1.8001234567
1.800.123.4567
1--800--123--4567
+1 (800) 123-4567
...
Concatenating two lists - difference between '+=' and extend()
...ADD.
Try the following code a few times (for Python 3):
import time
def test():
x = list(range(10000000))
y = list(range(10000000))
z = list(range(10000000))
# INPLACE_ADD
t0 = time.process_time()
z += x
t_inplace_add = time.process_time() - t0
# ADD
t0 = tim...
How to validate a url in Python? (Malformed or not)
...k the code, regexp is quite good actually: validators.readthedocs.io/en/latest/_modules/validators/…
– Drachenfels
Sep 6 '17 at 14:17
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