rfm module

,sort_keys=true,indent=10,separators= (', ', ': '), Ensure_ascii=false)Print(JSON_DIC2)Liu, PickleTwo module JSON for serialization, for converting between string and Python data typesPickle for conversion between Python-specific types and Python data typesThe Pickle module provides four functions: dumps, dump (serialization, Save), Loads (deserialization, read), load (can not only se

Time module and datetime module, datetime ModuleTime module and datetime Module 1. Call Import time # Call time moduleIi. usage method 1. time. time Obtain the timestamp. The number of seconds from January 1, 1970 of the year when Linux was born to the time when the program was executed.2. time. sleep () Pause the prog

Python Learning (6) module-third-party module, python third-party modulePython third-party module Install third-party modules In Python, third-party modules are installed through the setuptools tool. Python has two package management tools that encapsulate setuptools: easy_install and pip. Pip is currently officially recommended. If you are using Mac or Linux,

OS ModuleOperating system functions, involving files and directories and other operations. Not subject to platform restrictions. The OS module allows a program to run without any changes while running under Linux and Windows. Similar to command operations in Windows PowerShell and Linux.Common operationsOS.GETCWD () Gets the current working directory, which is the directory path of the current Python script work os.chdir ("dirname") To change the curr

under Windowsstruct struct ModuleThe module can turn a type, such as a number, into a fixed-length bytes>>> struct.pack ('i', 1000000000000000000) Traceback (most recent call last): " " in struct.error:argument out of range# struct.error: ' I ' format requires-2147483648 Importjson,struct#Imagine uploading 1t:1073741824000 files through a client a.txt#to avoid sticky packets, you must customize the headerheader={'file_size': 1073741824000,

JSON module:JSON: Information exchange (conversion of strings) to any languageAfter JSON conversion, all types can be converted to double quotation marks before being converted to STRFor example: file reads and writes:1 #Write file:2 ImportJSON3f = open ("Demo.txt","W")4DIC = {"name":"g_l"}5Dic_str =json.dumps (DIC)6 f.write (DIC_STR)7 Print(Type (DIC_STR))8 Print(DIC_STR) 1 # Read file: 2 import JSON 3 f = open ( " Demo.txt ", " R " ) 4 f_read = F.read () 5 f_read = Json.

(Bytes_st) #加密 Return M.hexdigest () #返回加密后的结果## sha_256 =hashlib.sha256 (BYTES_YBQ)# sha512 =hashlib.sha512 (BYTES_YBQ)# Print (Sha512.hexdigest ())# Print (dir (m))#md5加密是不可逆的, cannot be decrypted.# MD5 MD5AF# 123456 f0dfb4c958c67903e542e31c729c629b#撞库Import Base64s= ' hahaha 'byte_s = S.encode () #字符串变成二进制res = Base64.b64encode (byte_s) #base64编码Print (Res.decode ()) #把bytes转成字符串.Jie_mi_res = Base64.b64decode (Res.decode ()) #base64编码Print (Jie_mi_res.decode ()) Day5-python

# FromFunction creates an array from a function, a custom function, and an array from a function; # the FROMPYFUNC call format is Frompyfunc (func, Nin, Nout), Nin is the number of input parameters for this function, and Nout is the number of return values for this function. print'b is:%s' %bData Type Objects (Dtype) and structure arrayData type Object, ie. An instance of Numpy.dtype describes how an array object resolves a fixed-size memory segment in memory. It depicts several aspects of the

Sys module and serialization module (instance description) of the python module, and python serialization Sys module The sys module is an interface for interacting with the python interpreter. Sys. argv command line parameter List. The first element is the program path sys.

follows:可见在logging.basicConfig()函数中可通过具体参数来更改logging模块默认行为，可用参数有filename：用指定的文件名创建FiledHandler（后边会具体讲解handler的概念），这样日志会被存储在指定的文件中。filemode：文件打开方式，在指定了filename时使用这个参数，默认值为“a”还可指定为“w”。format：指定handler使用的日志显示格式。 datefmt：指定日期时间格式。 level：设置rootlogger（后边会讲解具体概念）的日志级别 stream：用指定的stream创建StreamHandler。可以指定输出到sys.stderr,sys.stdout或者文件(f=open(‘test.log‘,‘w‘))，默认为sys.stderr。若同时列出了filename和stream两个参数，则stream参数会被忽略。format参数中可能用到的格式化串：%(name)s Logger的名字%(levelno)s 数字形式的日志级别%(levelname)s 文本形式的日志级别%(pathname)s

Maven builds a single module in a multi-module project separately. maven builds a module project Recently, multiple maven modules have been used in a company project. Because the project is large, it takes too long to build the entire project after each modification. You need to build a module separately. mvn has the f

How do I refer to another module in the module?Method One:Google provides its own reliance, compile introduction needs to use the module.Method Two:Each module will eventually be compiled into a corresponding suffix for the Aar file The first step: you need to first add the following code under android{} under Build.gradle in the host module:Repositories { Fla

According to Tengine's official website, the Ngx_dso_module module is used to dynamically load modules at runtime without having to recompile the tengine every time. The number of dynamic load modules is limited to 128, if the dynamic module has been loaded modified, then must be re-tengine to take effect, and only support the HTTP module. In fact, Ngx_dso_modul

Source: S9t9 may encounter a module. B module. C Module In developing an OA system, S9T9 may encounter a module. B module. c modules, which are also modules to form a complete system to buy to customer service.Now there is a customer service to us to do an OA system, alas w

SYS module Common letter SYS.ARGV: Implements passing parameters from outside the program to the program. sys.exit([arg]): Exit in the middle of the program, arg=0 for normal exit. sys.getdefaultencoding(): Gets the current encoding of the system, which is generally ASCII by default. sys.setdefaultencoding(): Set system default encoding, do not see this method when executing dir (SYS), do not pass in interpreter, can execute reloa

, Format: Compressed package type, "Zip", "tar", "Bztar", "Gztar" Root_dir: Folder path to compress (default current directory), which directory or file to package (that is, the source file) Owner: User, default Current user Group: Groups, default current group Logger: Used to log logs, usually logging. Logger Object Example Import Shutil shutil.make_archive ("Test_package_bak", "Zip", "test_package") #对文件夹下的test_package文件夹进行打包　　Output results11, shuti

, always with the first call to this function's timestamp as the cardinality. Unix always returns the full run time.Example: Test your computer's computational performanceImport timeSum=0Time.clock ()For I in Range (100000000):Sum+=iPrint (Time.clock ())#corei5->16.5 secondsDatatime module:The Datatime module is encapsulated based on the time module and provides a more practical function, and the interface

JSON module There was an eval function that could extract a corresponding data type from a string, such as "{" "Name": "Zhangsan"} "to extract a dictionary." JSON modules can do the same thing, but more powerful, Eval can only recognize the data structure of the Python language. JSON can recognize multi-language data structures Import of modulesImport JSON Encapsulates a data type in JSON format (string) with dumpsDIC = {"name":"cod

Day5 module Learning -- re regular module, day5 module -- re 1. Regular Expression Basics 1.1. Brief Introduction Regular expressions are not part of Python. Regular Expressions are powerful tools used to process strings. They have their own unique syntax and an independent processing engine, which may not be as efficient as the built-in str method, but are very

One, OS module 1 os.getcwd () Gets the current working directory, that is, the directory path of the current Python script work 2 3 os.chdir ("dirname") changes the working directory of the current script; equivalent to the Shell CD 4 5 Os.curdir returns the current directory: ('. ') ) 6 7 Os.pardir Gets the current directory string name: (' ... ') 8 9 os.makedirs (' dirname1/dirname2 ') can generate a multi-level recursive direc