大约有 43,400 项符合查询结果(耗时:0.0273秒) [XML]
Element-wise addition of 2 lists?
...t;>> from operator import add
>>> list( map(add, list1, list2) )
[5, 7, 9]
or zip with a list comprehension:
>>> [sum(x) for x in zip(list1, list2)]
[5, 7, 9]
Timing comparisons:
>>> list2 = [4, 5, 6]*10**5
>>> list1 = [1, 2, 3]*10**5
>>> %tim...
What is the bower (and npm) version syntax?
...
342
In a nutshell, the syntax for Bower version numbers (and NPM's) is called SemVer, which is short...
What is the most efficient way of finding all the factors of a number in Python?
...n to me an efficient way of finding all the factors of a number in Python (2.7)?
22 Answers
...
Deep copy of a dict in python
...
502
How about:
import copy
d = { ... }
d2 = copy.deepcopy(d)
Python 2 or 3:
Python 3.2 (r32:8844...
Counting the number of elements with the values of x in a vector
...
521
You can just use table():
> a <- table(numbers)
> a
numbers
4 5 23 34 43 54 ...
How can I plot separate Pandas DataFrames as subplots?
...
264
You can manually create the subplots with matplotlib, and then plot the dataframes on a specif...
Getting distance between two points based on latitude/longitude
...
215
Edit: Just as a note, if you just need a quick and easy way of finding the distance between tw...
Selecting pandas column by location
... to mind:
>>> df
A B C D
0 0.424634 1.716633 0.282734 2.086944
1 -1.325816 2.056277 2.583704 -0.776403
2 1.457809 -0.407279 -1.560583 -1.316246
3 -0.757134 -1.321025 1.325853 -2.513373
4 1.366180 -1.265185 -2.184617 0.881514
>>> df.iloc[...
How to find time complexity of an algorithm
...de any simplifying constant factor.
For example, lets see how we simplify 2N + 2 machine instructions to describe this as just O(N).
Why do we remove the two 2s ?
We are interested in the performance of the algorithm as N becomes large.
Consider the two terms 2N and 2.
What is the relative inf...