Python

Every day to write a little Python applet, below is a TXT file inside of the count of words, look at the other people's1File_name="E:\movie.txt"2 #Python Learning Group 1252409633 4 5line_counts=06 7word_counts=08 9character_counts=0Ten One A

Requests,python HTTP Request Library, the equivalent of Android Retrofit, its features include keep-alive and connection pooling, Cookie persistence, content auto-decompression, HTTP proxy, SSL authentication, connection timeout, Session and many

 1, adding temporarily with a function1 Import sys # importing sys module 234 sys.path.append (R' /tmp/test') # to use absolute path 5print(sys.path) # View Module Path2, add it permanently, add it in the third-party

Import UnitTestClass Test1 (UnitTest. TestCase): def setUp (self): Print ("Login") def test_01 (self): Self.assertequal (a) def test_02 (self): Self.assertequal (2,3) def tearDown (self): Print ("Close")if

由于需要用到很多第三方的包，比如numpy，pandas等，而生产环境又无法上网单个包安装太麻烦，因此考虑把之前安装的python的独立环境换成Anaconda的集成开发环境。以下是具体步骤： 1安装Anaconda3-5.0.1-Linux-x86_64.sh脚本 2给/opt/modules/anaconda3/bin/python3.6建立软链接Ln-s/opt/modules/anaconda3/bin/python/usr/bin/python33 Modifying the

The path to learning in Python -2018/6/14 1. Browser and serverThe process by which the browser sends a request to the server is the process of requesting, and the server responds to the browser as a response process.2. A simple Web

This article is based on the Python 3.6.5 frustration built-in exceptions, not very detailed, only the Python built-in exception to the simple (difficult) Introduction-many exceptions can be judged from the name of its meaning, listing all the built-

A queue is a data structure that is secure and data-safe. The list of capable things in the queue is capable. The list is thread insecure, so it can be said that the queue is for multithreaded occurrences.The data structure is used to store it,

Considerations for the issueNonlocal's ProblemNonlocal variable range problem, you can get the variables of the upper function, if the upper function does not have this variable, then will go to the upper layer, but not to the global search.Examples

' Basic use if condition: code that satisfies the conditional execution: ' ' ' ' ' ' ' # age = Input ' ("* * Input Age:") # The result from input by default is STR,STR Format cannot be performed by 35:# Print ("The retired ...") # "to write a Guess

#运算符，计算机不但支持基本的加减乘除还支持逻辑运算、赋值运算、比较运算、算数运算、成员运算、身份运算、位运算#算数运算‘‘‘ + 加法运算 - 减法运算 * 乘法运算 / 除法运算 % 取模运算 9%7 结果为2 ** 幂运算，也就是次方运算 2**2 结果为4 // 取整除 9//2 结果为4 9.0//2.0 结果为 4.0 ‘‘‘#比较运算‘‘‘== 判断两个值是否相等 print(a == b) 结果：False!= 不等于 print(a != b) 结果：True<> 不等于

VirtualenvUsed to create an isolated Python environment.Each project has its own dependency package, which sometimes has version conflicts, and the best way to handle this is to create a dedicated environment for each project.For example:Create a

1. Type functionName ="This is a string"Print(Type (name))#Print("*"* 10,"Dividing Line","*"* 10) CLS= Type ('Foo', (), {}) F=CLS ()Print(Type (f))#Print(Type (CLS))#Print(CLS.__name__)#FooPrint("*"* 10,"Dividing Line","*"* 10)definit (self, Name,

1. List definitionlist=[‘张三‘,‘李四‘,123]2. Accessing the values in the listprint(list[0])>>:张三print(list[0:2])>>:[‘张三‘，‘李四‘]3. Add element Append (), insert ()3.1 Append () Append Datalist.append(231)3.2 Insert () to add at the specified

Iterator (iterator) protocol· In Python, the support iterator protocol is the __iter__ () and __next__ () methods that implement the object.1. __iter__ () Method: Returns the Iterator object itself;2. __next__ () Method: Returns the next element in

One: Write the function (the time of the function execution is random)Two: Write the adorner, add the function of statistic timeImport TimedefTimmer (func):defWrapper (*args,**Kwargs): Start=time.time () Res= Func (*args,**Kwargs) Stop=time.time

Outputby print() Adding a string to the parentheses, you can output the specified text to the screen. For example ‘hello, world‘ , the output is implemented in code as follows:>>> print(‘hello, world‘)print()A function can also accept multiple

Python Basics (File operations)I. Initial file operationUsing Python to read and write files is a very simple operation. We use the open () function to get to a file handle by opening a file. Then you can do all sorts of things with a file handle.

Thread queue describes the type of queue: FIFO: Queue.queue (maxsize=0)FIFO is the first in. The queue provides a basic FIFO container, which is simple to use, and MaxSize is an integer that indicates the upper bound

Delete the full Python script for more than 1 years of data:VI aa.py#!/usr/bin/pythonImport OSImport datetimeImport ShutilDir= "/AA"now = Datetime.datetime.now ()Delta = Datetime.timedelta (days=365)Os.remove ("/log/110hudrm/gmss.txt")Os.mknod