Category：Python
-
Time：2020-1-21
Nesting, namespace, and scope of functions 1. Three forms of calling function def func(): print(‘from func’) Func() ාාාthe first function name is bracketed def max_2(x,y): if x > y: return x else: return y res = max_2(10,3) Print (RES) – expression to call def max_2(x,y): if x > y: return x else: return y res […]
-
Time：2020-1-21
The example of this paper shares the voice dialogue robot based on raspberry pie for your reference. The specific content is as follows The first partCode arecord -D “plughw:1” -f S16_LE -r 16000 -d 3 /home/pi/Desktop/voice.wav The second partCode # coding: utf-8 import sys import json import urllib2 import base64 import requests reload(sys) sys.setdefaultencoding(“utf-8”) def […]
-
Time：2020-1-19
1、 Function object 1. Function names can be referenced def foo(): print(‘from foo’) Res = foo ා the function name foo is given to res, and res and foo point to the same memory address res() #from foo 2. Function names can be passed as arguments def foo1(a,b): #a=1,b=foo2 print(a) #1 B() ාb() is foo2() […]
-
Time：2020-1-19
The example of this article shares the specific code of Python accessing wechat chat robot for your reference. The specific content is as follows 1. Installation library wxpy: pip install -U wxpy or pip install -U wxpy -i https://pypi.doubanio.com/simple/ 2. Simple operation: from wxpy import * BOT = BOT (cache? Path = true) ා password […]
-
Time：2020-1-18
function Function object Function isFirst class object Function name canCited Function names can be treated asparameterUse Function names can be treated asReturn valueUse Function names can be treated asElement of container type Function nesting Nested CallCall function in function Nesting definition: define function inside function Namespace Storage variable nameSpace, divided intoBuilt in namespace、Global namespace、Local namespace […]
-
Time：2020-1-18
Inheritance relationship of text operation of pyqt: QTextBrowser ( QtGui.QTextEdit) Qtextedit has the following functions: Copy() copy Selectall() select all Clear() clear Although it can be realized by cursor selection, it is more convenient to directly call the method of the parent class, including shortcut keys. The above pyqt realizes the function of copying, selecting […]
-
Time：2020-1-17
As a required part of computer foundation, data structure is also a necessary test for many large Internet enterprises. It is conceivable that it is important in the field of computer. However, many students majoring in computer only understand the theory of data structure, but they can’t realize all kinds of data structures with code. […]
-
Time：2020-1-17
The essence of the tree is that many pieces of data are displayed in layers according to certain internal relations. Therefore, each piece of data includes data items and interrelations. The data item corresponds to the column in the tree, and the relationship corresponds to which item should be displayed. In pyqt5, there are two […]
-
Time：2020-1-16
Cursor is a cursor object. This cursor is a MySQL DB object that implements the iterator (def_uiter_u()) and the generator (yield). At this time, there is no data in the cursor. Only when fetchone() or fetchall() returns a tuple can len() and index() be supported, which is why it is an iterator. But why is […]
-
Time：2020-1-16
In this paper, the same data set is displayed in three different simple item widgets. The data of the three windows is synchronized in real time, and the data and view are separated. When data rows are added or deleted, the three different views remain synchronized. The data will be saved in a local file, […]
-
Time：2020-1-15
Python has many ready to eat modules (such as OS, subprocess, and shutil) to support file I / O operations. In this article, you’ll see some special ways to copy files in Python. Let’s start to learn these nine different ways to implement Python copy file operation. Before you start, you have to understand why […]
-
Time：2020-1-15
During the use of pycharm, the coding format of each new file and some personal information about the code writer can be filled in quickly as follows: 1. Open pycharm, select file settings (Ctrl + Alt + s), and then select editor — color & Style — file and templates — Python script You can […]
