python - Is it necessary to onehot discrete variables in tree models?

Specifically, taking sklearn's GBDT as an example, if the data is all discrete, can it be trained directly? If...

From [Pythondiscussion group] 2017-05-18 10:46:59 0  1  850

python - Use urllib to grab the download link on the web page. The target file is in the form of xls, but it is found that the captured xls is an empty table with only one error message in it. Please help.

I want to use urllib to grab the xls download link of the Shanghai Stock Exchange stock list, as shown in the ...

From [Pythondiscussion group] 2017-05-18 10:46:56 0  2  720

cookies - python failed to log in to the website using cookies

I used fiddler to obtain the cookie, and then used requests to directly bring this cookie to request my page. ...

From [Pythondiscussion group] 2017-05-18 10:46:54 0  1  583

python - problem with datetime time output

1. Learn the basics of PYTHON on codecademy. Learn datetime and run the code: {code...}

From [Pythondiscussion group] 2017-05-18 10:46:51 0  2  989

python - numpy data sorting problem

{code...} why not [2,0,1]

From [Pythondiscussion group] 2017-05-18 10:46:48 0  1  710

python - How to get the number of forwarded Weibo posts and the number of original Weibo posts of a user on Sina Weibo

1. Problem Description I am doing an analysis related to Weibo trolls, and I need to obtain the ratio of repos...

From [Pythondiscussion group] 2017-05-18 10:46:47 0  1  858

python - flask blog add domain name

I wrote a flask blog myself and deployed it on VPS using gunicorn + nginx. Normally logging in with IP can dis...

From [Pythondiscussion group] 2017-05-18 10:46:44 0  3  720

python - flask+ajax post 400 error

Form code {code...} ajax code: {code...} python code {code...} After I click submit, it jumps to /tpush/pl Tip...

From [Pythondiscussion group] 2017-05-18 10:46:36 0  1  911

python - Can't enter the background when building a blog with django-blog-zinnia?

When django-blog-zinnia builds a blog and enters the background, an AttributeError: 'WSGIRequest' object has n...

From [Pythondiscussion group] 2017-05-18 10:46:33 0  1  606

Python basics, data type issues

{Code...} Why does the above code return False? type(-10) is integer data.

From [Pythondiscussion group] 2017-05-18 10:46:27 0  2  910

How to skip login in python django admin management background

The admin management background that comes with the Django framework can be automatically logged in without th...

From [Pythondiscussion group] 2017-05-18 10:46:22 0  1  703

python - DataFrame usage issues

{Code...} The second line is incomprehensible. fram['a'].notnull() is pandas.core.series.Series, how come it i...

From [Pythondiscussion group] 2017-05-18 10:46:18 0  1  601

Can Python subclasses override global functions?

For example, there is a class A in a.py. A has several methods. These methods all call a global function hello...

From [Pythondiscussion group] 2017-05-18 10:46:14 0  2  517

paramiko - Can files generated by Python tempfile be copied to a remote server?

The current situation is like this. I used python to generate a temporary file based on the parameters passed ...

From [Pythondiscussion group] 2017-05-18 10:46:12 0  1  788

python - url_for in flask template all point to 404 page?

The links using url_for in the template all point to the 404 page, for example: {code...} Clicking the logout ...

From [Pythondiscussion group] 2017-05-18 10:46:08 0  1  590