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More elegant way of declaring multiple variables at the same time
...
@Zac to correctly do so use a, b, c = ([] for i in range(3)). source. For consistency, you could also use a variant of that for this answer, i.e., a,b,c,d,e,g,h,i,j = (True for i in range(9)) f=(False i in range(1)).
– Novice C
Sep 21 '1...
How do I restore a missing IIS Express SSL Certificate?
...ss to work with SSL, the port used needs to be in the 44300 through 44399 range (http://www.iis.net/learn/extensions/using-iis-express/running-iis-express-without-administrative-privileges).
So, if you're using IIS Express in Visual Studio, make sure the port selected is in the required range:
vs ...
Get difference between two lists
...emp1 if x not in s]
Performance test
import timeit
init = 'temp1 = list(range(100)); temp2 = [i * 2 for i in range(50)]'
print timeit.timeit('list(set(temp1) - set(temp2))', init, number = 100000)
print timeit.timeit('s = set(temp2);[x for x in temp1 if x not in s]', init, number = 100000)
print ...
What's the common practice for enums in Python? [duplicate]
...
class Materials:
Shaded, Shiny, Transparent, Matte = range(4)
>>> print Materials.Matte
3
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How to put individual tags for a scatter plot
...10
data = np.random.random((N, 4))
labels = ['point{0}'.format(i) for i in range(N)]
plt.subplots_adjust(bottom = 0.1)
plt.scatter(
data[:, 0], data[:, 1], marker='o', c=data[:, 2], s=data[:, 3] * 1500,
cmap=plt.get_cmap('Spectral'))
for label, x, y in zip(labels, data[:, 0], data[:, 1]):
...
Efficient evaluation of a function at every cell of a NumPy array
...lot
perfplot.show(
setup=lambda n: np.random.rand(n,n)[::2,::2],
n_range=[2**k for k in range(0,12)],
kernels=[
f,
vf,
nb_vf
],
logx=True,
logy=True,
xlabel='len(x)'
)
B. comparison of exp:
import perfplot
import numexpr as ne # using ...
Converting from IEnumerable to List [duplicate]
...xtension method.
Example:
IEnumerable<int> enumerable = Enumerable.Range(1, 300);
List<int> asList = enumerable.ToList();
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What is the difference between `sorted(list)` vs `list.sort()`?
..., here's our setup:
import timeit
setup = """
import random
lists = [list(range(10000)) for _ in range(1000)] # list of lists
for l in lists:
random.shuffle(l) # shuffle each list
shuffled_iter = iter(lists) # wrap as iterator so next() yields one at a time
"""
And here's our results for a l...
How exactly does a generator comprehension work?
...mber from 1 to 10. You can do this in Python:
>>> [x**2 for x in range(1,11)]
[1, 4, 9, 16, 25, 36, 49, 64, 81, 100]
here, range(1,11) generates the list [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], but the range function is not a generator before Python 3.0, and therefore the construct I've used is...
What's invokedynamic and how do I use it?
...d to be dumb data holders.
Considering this simple record:
public record Range(int min, int max) {}
The bytecode for this example would be something like:
Compiled from "Range.java"
public java.lang.String toString();
descriptor: ()Ljava/lang/String;
flags: (0x0001) ACC_PUBLIC
Code:...