10 hex digits generator

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Python Learning Journey-Basics (v) string formatting, recursion, generators & iterators, modules

This article highlights:String formattingRecursiveGenerators and iteratorsModuleFirst, string formattingTwo ways to format a string: placeholder%, Format function1, placeholder%%[(name)][flags][width]. [Precision]typecode -(name) is optional to

Python foundation------Builder Expression form, process-oriented programming, built-in function section

Generator expression FormDirectly on the code1 # Yield expression Form 2 def foo (): 3 print (' starting ') 4 while True:5 X=yield #默认返回为空, actually x=yield None 6 p Rint (' value ', x) 7 G=foo () 8 Print (g.__next__ ())

Python-based builder expression form, process-oriented programming, built-in function section

Generator expression FormDirectly on the code1 # Yield expression Form 2 def foo (): 3 print (' starting ') 4 while True:5 X=yield #默认返回为空, actually x=yield None 6 p Rint (' value ', x) 7 G=foo () 8 Print (g.__next__ ())

0517Python Basics-built-in functions

1. Yesterday's content reviewAn iterative object: An internally containing __iter__ methodIterators: Internally containing the __iter__ method and also containing the __next__ methodAn iterative object. __iter__ ()Determines the iterator that

7 methods for generating random numbers in shell instances

7 methods for generating random numbers in shell instancesI. Problems A random number is sometimes used in Shell, and the method for generating the random number is summarized here. Computers generate only pseudo-random numbers and do not generate

Python Automation Development Learning 3-2-anonymous functions, built-in functions

anonymous functionsIf the function value is used once and the structure statement (which requires a single line of expression), an anonymous function can be used. Benefits of anonymous functions: The program is used once, so there is no

Introduction to three common IP packet sending tools

Antpower All Rights Reserved 2003 Technical Articles Http://www.antpower.org 1st pages 14 pages Antpower-Technical article Introduction to three common IP packet sending tools Lang Guojun, an ambitious member of

Python Learning-Supplement

First, string formattingThere are two ways to format a Python string: a percent-semicolon, format-modeThe percent of the semicolon is relatively old, and format is a more advanced way to replace the old way, the two coexist.1, percent of the way

HD Wallet Learning Summary

Wallets are used on public chains such as Bitcoin/Ethereum. Wallets are primarily used to manage the user's private key, and the user's digital currency on the chain, which is the signature of the transaction with the private key. The private key

MySQL Getting Started note 3

26 Lesson Union Queryis to combine two or more query results into one result.The where of the two statements is more complex, it is cumbersome to write together, and it is divided into two simpleMysql> SELECT * from goods where cat_id =3Union-select

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