Tuples are another important sequence structure in Python. Similar to lists, tuples are also composed of a series of elements sorted in a specific order. Unlike a list, a list can operate on any element and is a variable sequence, while a tuple is an immutable sequence, that is, the elements in the tuple cannot be modified separately.
Tuples c ...
Posted on Thu, 17 Oct 2019 01:52:01 -0400 by manishdugar
Hummingbird net picture
The capacity of the previous tutorials is relatively large. Today I write a relatively simple one. It's a hummingbird. I still use aiohttp. I hope you like it.Crawl page` https://tu.fengniao.com The front process is still based on the purpose of learning. Why do I choose hummingbirds? I can't help it. I chose it blindly ...
Posted on Wed, 16 Oct 2019 19:27:06 -0400 by cedtech31
Comprehensive strategy of deep learning configuration environment
1. Install pycharm
Download the community version on the official website
2. Modify apt get source
sudo apt-get update
sudo apt-get upgrade
# Backup source
sudo cp sources.list sources.list.bk
# Replace the original wit ...
Posted on Wed, 16 Oct 2019 17:28:24 -0400 by PhpMachine
Pandas grouping and aggregation
Data sets are grouped and then statistically analyzed
SQL can filter and aggregate data.
pandas can use groupby for more complex grouping operations
Group operation process: split - > apply - > combine
Split: basis for grouping
2. Application: calculation rules for each group
3. Merge: merge ...
Posted on Wed, 16 Oct 2019 14:49:44 -0400 by hoogeebear
Mycli is a MySQL command-line client tool, which has automatic completion and syntax highlighting functions. It is a tool developed by Indians based on python. It is suitable for beginners or people who are familiar with database but can't remember commands. It can overcome the difficulty of not remembering commands.
Official website: ht ...
Posted on Wed, 16 Oct 2019 13:26:53 -0400 by meltingpotclub
DROP TABLE IF EXISTS `operationlog`;
CREATE TABLE `o ...
Posted on Wed, 16 Oct 2019 10:37:09 -0400 by dsainteclaire
N Dimension Array
NumPy array is a multidimensional array object (matrix), which is called ndarray. It has the ability of vector arithmetic and complex broadcast, and it has the characteristics of fast execution and space saving.
Note: the subscript of ndarray starts from 0, and all elements in the array must be of the same type
Properties own ...
Posted on Wed, 16 Oct 2019 08:14:36 -0400 by jackliu97
Element calculation function
ceil(): the closest integer up, with the parameter number or array
floor(): the down nearest integer with the parameter number or array
rint(): round, parameter is number or array
isnan(): determine whether the element is NaN(Not a Number), and whether the parameter is number or array.
Posted on Wed, 16 Oct 2019 08:14:25 -0400 by tisource
I have always been partial to Buddhism for wallpaper, do not like to go to a pile of wallpaper. So we simply download wallpaper automatically in Python. The function of regular random rotation comes from entertainment and sharing it with you.
Original link: https://www.codernice.top/articles/9f79c65e.html
Download and install Python 3 ...
Posted on Wed, 16 Oct 2019 02:51:26 -0400 by mickey9801
In recent days, I've been reviewing the airplane battle of wechat games, and I'm thinking about my life while playing. How can this airplane battle be done so well? It's easy to operate and get started.
Help squatting toilet, YP and rice circle girls have one thing to cheer them up when they are bored! Let their left / right hand move rhythmic ...
Posted on Tue, 15 Oct 2019 17:57:19 -0400 by sickness01