大约有 42,000 项符合查询结果（耗时：0.0530秒） [XML]
how do you filter pandas dataframes by multiple columns
...={}
for g in ['male', 'female']:
dic[g]=defaultdict(dict)
for y in [2013, 2014]:
dic[g][y]=df[(df[Gender]==g) & (df[Year]==y)] #store the DataFrames to a dict of dict
EDIT:
A demo for your getDF:
def getDF(dic, gender, year):
return dic[gender][year]
print genDF(dic, 'male', 2014)...
Detect Chrome extension first run / update
...
answered Feb 19 '13 at 12:37
Alvin WongAlvin Wong
11.2k55 gold badges4040 silver badges7171 bronze badges
...
how do I strip white space when grabbing text with jQuery?
...
333
Use the replace function in js:
var emailAdd = $(this).text().replace(/ /g,'');
That will r...
Python: Get the first character of the first string in a list?
...
139
You almost had it right. The simplest way is
mylist[0][0] # get the first character from the...
Getting “bytes.Buffer does not implement io.Writer” error message
...
3 Answers
3
Active
...
How to add an extra source directory for maven to compile and include in the build jar?
...|
edited Sep 29 '15 at 18:36
brabenetz
34522 silver badges88 bronze badges
answered Mar 17 '12 at 19:25
...
How to style the option of an html “select” element?
...
|
edited Sep 30 '19 at 9:58
Jay
17k3131 gold badges102102 silver badges163163 bronze badges
...
Django fix Admin plural
...
283
Well well, it seems like the Meta class approach still works.
So placing a meta class inside you...
Android preferences onclick event
...
230
Badr,
You need to set android:key for the item, Then in your code you can do...
Assuming you...