大约有 44,000 项符合查询结果（耗时：0.0459秒） [XML]
Multiple aggregations of the same column using pandas GroupBy.agg()
...there a pandas built-in way to apply two different aggregating functions f1, f2 to the same column df["returns"] , without having to call agg() multiple times?
...
Is there a way to squash a number of commits non-interactively?
...
150
Make sure your working tree is clean, then
git reset --soft HEAD~3
git commit -m 'new commit ...
Python using enumerate inside list comprehension
...
167
Try this:
[(i, j) for i, j in enumerate(mylist)]
You need to put i,j inside a tuple for the...
How to get the last element of an array in Ruby?
...
Use -1 index (negative indices count backward from the end of the array):
a[-1] # => 5
b[-1] # => 6
or Array#last method:
a.last # => 5
b.last # => 6
...
Get last result in interactive Python shell
...
Underscore.
>>> 5+5
10
>>> _
10
>>> _ + 5
15
>>> _
15
share
|
improve this answer
|
follow
...
namedtuple and default values for optional keyword arguments
...
21 Answers
21
Active
...
What does the git index contain EXACTLY?
...
163
The Git book contains an article on what an index includes:
The index is a binary file (gener...
Convert dmesg timestamp to custom date format
...
182
Understanding dmesg timestamp is pretty simple: it is time in seconds since the kernel started...