python sip module

One, why serialize# The process of converting an original dictionary, list, and other content into a string is called serialization‘‘‘For example, one of the data we calculate in Python code needs to be used for another program, so how do we give it?Now we can think of a method that exists in the file, and then another Python program is read from the file.But we all know that there is no dictionary concept

Make an ad. Welcome to join Linux,python Resource Share Group number: 478616847 Directory: 1. Scope 2. Recursion 3. Module Introduction 4. Built-in module-os 5. Built-in module-configparser 6. Built-in module-hashlib 7. With file operation

python/module and Package Module 1. What is a module?Module is the py file2. Why use modules?If you encode on the interpreter, the file that was written before the interpreter is closed does not exist, and can be permanently saved to disk if the

returns the last access, creation, modification time, respectivelyOs.path.getsize () returns the file sizeOs.path.exists () is presentOs.path.isabs () is an absolute pathOs.path.isdir () is a directoryOs.path.isfile () is a fileSYS.ARGV command line argument list, the first element is the path of the program itselfSys.modules.keys () returns the list of all modules that have been importedSys.exc_info () Gets the exception class currently being processed, Exc_type, Exc_value, exc_traceback the e

SYS module has many functions, the following describes a few common modules.1.SYS.ARGV: Passing parameters from outside to inside the program# !/usr/bin/env python Import SYS Print (Sys.argv[0]) # Argv[0] Indicates the name of the function Print (Sys.argv[1]) # first parameter Print (Sys.argv[2]) # second parameter ~ Execution Result:[[Email protected] script] #

A python file is a module that uses a separate namespace, but it is clearly not enough to use modules to define Python functionality in practice. Because a large system of thousands of tens of thousands of modules is a normal thing, if all together is obviously not good management and there is a possibility of naming conflicts, so

Common functions of the OS module in Python: pythonos Module This document references ------ concise Python tutorial OSIs an important module of python. Before use, you must:Import OS Common functions are as follows: (1)OS. name,

() ' EF ' >>> re.search (' [ef]+ ', ' Abc\nefg\nhij ', flags=re. MULTILINE). Group () ' EF 'S (dotall): Change '. ' Behavior, can also match \ n>>> Re.search ('. + ', ' abc\nefg\nhij ', flags=re. S). Group () ' Abc\nefg\nhij ' >>> re.search ('. + ', ' abc\nefg\nhij ', flags=re. Dotall). Group () ' Abc\nefg\nhij 'X (VERBOSE): Add a comment to the matching rule>>> re.search (' [0-9]+ #匹配一个或多个0-9 number ', ' abc123cde456fgh ', re. X). Group () ' 123 ' >>> re.search (' [0-9]+ #匹配一个或多个0-9 number ',

One, regular expression1. Character group: [0-9][a-z][a-z]The various characters that may appear in the same location make up a group of characters, expressed in a regular expression using []Characters are divided into classes, such as numbers, letters, punctuation, and so on.If you now ask for a position "only one number can appear", then the character in this position can only be one of the 10 numbers, 0, 1, 2...9.Can be written as a match for this [0-5a-ea-z] fetch range2. Characters1 #!/usr/

Base64 Module Preface Yesterday the team's sister came to ask questions about the POP3 protocol, so today a little bit about the format of the POP3 protocol and the poplib in Python. And the POP server back to the data in a part of the need to use the Base64 to decode, so the way to see the next Python inside the Base64 mod