association rules python

Scope rules and closures Based on Python functions (detailed description), python Functions Scope rules The namespace is a ing from name to object. In Python, it is mainly implemented through dictionaries, mainly including the following namespaces: The built-in namespace con

First, comments‘‘‘Multi-line comments‘‘‘#单行注释"' #example1.1 Test program time: 4/17/2017I1=input ("Please enter user name:")I2=input ("Please enter password")Print (I1)Print (I2)Print ("ainiyou")‘‘‘Second, the variable1) (the rules are the same as the rules in C)2) cannot make python internal keywordsIII. Basic data types1) NumberAge=242) stringName= "Yuanguolian

Python BASICS (1): basic rules and assignments, 2015 python Python has the following basic rules:# Post-Annotation\ N is the line Separator\ Is to continue the previous line and separate long statements; Semicolon connects two statements in one row: Colon separates the code

1. Statements are executed on a line-by-row basis, unless you do not writeIf the statement uses an if statement, his execution is jumping, and the IF statement is the process control2. Automatic boundary detection of blocks and statementsBecause Python does not have curly braces for these bounding symbols, it uses code indentation to control boundariesSimilarly, the end of a statement is not using semicolons, but also using code indentationIn the abov

python identifier naming rules :The first character of an identifier must be a letter in the alphabet (uppercase or lowercase) or an underscore (' _ ').Other parts of the identifier name can consist of a letter (uppercase or lowercase), an underscore (' _ '), or a number (0-9).The identifier name is case-sensitive. For example, MyName and myname are not an identifier. Note that the former lowercase n andThe

1. Start of the "#" comment#注释的东西print ("Welcome")2. "\ n" line break3. "\" then the previous line2>3 or 3==3Note: The logical operator must be in front of \ or error4. Using tuples to assign values to multiple variables5. ":" Separate the statements, our usual if,while,for are used to6. ";" To connect multiple statements together, but to avoid doing so for readabilityImport Sys;sys.platformRight here, thank you.------------------------------------------------------------------Click to jump

in Python, the underline naming rules tend to make beginners quite doubts: Single underline, double underline, double underline also points before and after ... What is the difference between their role and the use of the scene ? Let's talk about this topic today. 1. Single Underline (_) Typically, a single underscore (_) is used in the following 3 scenarios: 1.1 in the interpreter: in this case, "_" r

In Python, the underline naming rules tend to make beginners quite confused: Single underline, double underline, double underline and before and after ... What is the difference between their role and the use of the scene? Let's talk about this topic today.1. Single Underline (_)Typically, a single underscore (_) is used in the following 3 scenarios:1.1 In the Interpreter:In this case, "_" represents the re

1.Python file naming: Capitalize the first letter of each word without underliningName of the 2.Python class: capitalize the first letter of each word without underlining3.Python Package Name: Use each word as lowercase, without underlining4.Python function (method) naming: Each word is lowercase, if there are multiple

This article describes the scope rules in Python, including local scope, global scope, built-in scope, and nested scope, you can refer to Python as a static scope language, although it is a dynamic language. That is to say, in Python, the scope of a variable is determined by its position in the source code. This is sim

Python is a static-scoped language, although it is itself a dynamic language. In other words, the scope of the variable in Python is determined by its position in the source code, which is somewhat similar to C, but the difference between Python and C in scope is very obvious. Next, we'll talk about Python's scope rules