大约有 3,517 项符合查询结果（耗时：0.0115秒） [XML]
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 ...
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();
share
|
improve this answer
|
follow
...
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:...
What characters are forbidden in Windows and Linux directory names?
...klist of characters, you could use a whitelist. All things considered, the range of characters that make sense in a file or directory name context is quite short, and unless you have some very specific naming requirements your users will not hold it against your application if they cannot use the wh...