How to improve python?

I watched a set of python tutorials and studied them systematically. I feel that the code is still less writte...

From [Pythondiscussion group] 2017-05-18 10:55:16 0  3  661

python - How to get information for a website without API?

If you want to make a website, the user enters query information on the website, and the background automatica...

From [Pythondiscussion group] 2017-05-18 10:55:13 0  2  871

python - Can the WeChat public account authorization callback domain name be set as a second-level domain name?

Authorized login via WeChat, visit the authentication address: https://open.weixin.qq.com/co... Oops!something...

From [Pythondiscussion group] 2017-05-18 10:55:09 0  1  1144

Find the proportion of each value in the column using pandas in python

For example, I have a dataframe called df {code...}. The current method is {code...}. It feels very slow. Is t...

From [Pythondiscussion group] 2017-05-18 10:55:04 0  2  1849

python - How to crawl web content that is covered by the next page/rendered by JS?

I want to extract the current selling price of the item and the ITEM_ID of the corresponding item on the web p...

From [Pythondiscussion group] 2017-05-18 10:55:01 0  1  1233

javascript - js MD5 encryption of Chinese and python results are different.

When using python for MD5 encryption, you need to encode the string. The code is as follows: {code...} MD5 enc...

From [Pythondiscussion group] 2017-05-18 10:54:55 0  3  957

Problems with Python3.6 int optimization mechanism, 64-bit machines (-5 to 257)

Optimization mechanism in Python (both 2.7 and 3.5): Numbers between -5~257, if you use the first assignment m...

From [Pythondiscussion group] 2017-05-18 10:54:54 0  1  764

python - Encountered a problem when crawling images. urllib.request.urlretrieve failed to download to the specified folder?

There is no problem if you download to the D drive, but there is a problem if you download to the directory I ...

From [Pythondiscussion group] 2017-05-18 10:54:50 0  1  1978

python - How to find From Data in chrome, a newbie wants to ask

The picture above comes from Simulated login to CSDN - it's that simple. When I was going to write a simulated...

From [Pythondiscussion group] 2017-05-18 10:54:44 0  2  1099

python adds columns to 8000 rows csv

I want to add more than 2,000 columns to the existing csv with more than 8,000 columns. Because the file is to...

From [Pythondiscussion group] 2017-05-18 10:54:39 0  2  926

python gets all values ​​of dict

For example: {code...} What is returned is: {code...} What you want is aa and bb. How should I write it? Thank...

From [Pythondiscussion group] 2017-05-18 10:54:30 0  2  633

How does Python parse this data type? data__key__hello = "world"

For example, there is such a dictionary: {code...} After conversion, it becomes {code...}, which is divided by...

From [Pythondiscussion group] 2017-05-18 10:54:23 0  2  672

json - The third question about placing orders with python and oanda's simulated trading api

This time I want to buy 50 USD_CAD contracts at the current market price. Program: import requestsimport json ...

From [Pythondiscussion group] 2017-05-18 10:54:22 0  2  1084

Error 500 appears when uploading Python packaging code to PYPI. I would like to ask for advice.

Because I am a newbie, I don’t know much about code failure issues. I originally followed the instructions in ...

From [Pythondiscussion group] 2017-05-18 10:54:17 0  1  705

python-appium code runs error

The sample code runs normally on other people's machines, but an error occurs on my phone.

From [Pythondiscussion group] 2017-05-18 10:54:13 0  1  678