python static analysis

Before formally entering the test, it is helpful to do some static code analysis and code review to improve the quality and the system, the above is the data proofPMD It is a Java source code parser based on a static rule set that identifies potential problems such as:– Possible bug--empty try/catch/finally/switch blocks.– Useless codes (Dead code): Useless local

Stunned by digital speech: efficiency analysis and comparison of TP framework, php, html, and php static pages !! Nbsp; nbsp; I plan to create a high-performance chat server Recently. I don't know how efficient Thinkphp3.2 is? That is to say, the efficiency of the framework is digital. We are shocked: analysis and comparison of the efficiency of TP framework, p

: ' + cls.val1 + ', cannot access the value of Val2 'cmd = Classmethod (CLASSMD)Execution:>>> MC = MyClass ()>>> MC.SMD ()>>> Mc.cmd ()>>> MYCLASS.SMD ()>>> Myclass.cmd ()second, in Python 2.4 and after, with the adorner (decorators) to achieveThe adorner uses the @ operator, as in the following example: Class MyClass:Val1 = ' Value 1 'def __init__ (self):Self.val2 = ' Value 2 '@staticmethodDef staticmd ():print '

See the document "Cppcheck and PREfast static analysis test for Cplusplus code". zipC + + Test source code main.cpp#define NULL 0#include #include Not initializedvoid Defect1 (){int A;int b;b = A;}Null pointer valuevoid Defect2 (int b, int c){int * p = NULL;int a = 1;if (b = = 1){if (c = = 1){p = A;}Else{}}Else{if (c = = 1){}Else{p = A;}}* p;return;}Operator precedence for possible errorsvoid Defect3 (){i

Example Analysis of return Statement usage in Python and python instance analysis This example describes the return statement usage in Python. Share it with you for your reference. The details are as follows: Return Statement: Return statements are used to jump out of a f

Basic Concepts There are two types of libraries: Dynamic and Static. Dynamic files are usually suffixed with. so, and static files are suffixed with.. For example: libhello. so libhello. to use libraries of different versions in the same system, you can add the version number suffix after the library file name, for example, libhello. so.1.0, because the program connection defaults. so is the file suffix. To

Python rabbit poison problem instance analysis, python instance analysis This article analyzes the Python rabbit poison problem. Share it with you for your reference. The specific analysis is as follows: The problem is roughly as

Python iterator instance analysis, python instance analysis This article describes the simple usage of the python iterator for your reference. The specific analysis is as follows: Generator expressions are used to generate sequenc

This article introduces, PHP in the Static,const and define usage difference, the need for friends to refer to it.In PHP, often use static,const and define, today we come to understand the difference between the next three what?Define: A macro can be used instead of a constant value, and it can be used instead of an expression or even a code snippet. (Macros are powerful, but error-prone, so their pros and

In-depth analysis of multiple inheritance issues of Python classes, and in-depth analysis of python Body First, you must note that Python classes are classified into classic classes and new classes.The classic class is something before python2.2, but it is still compatible w

object, and the class object referred to here refers to the class itself, not to the class instantiation of the object)Let's take a look at the actual example:First, define a class:Class TestMethod (object): #一般方法, static methods, and class methods are independent of the new class, we use the new class for example, but note that the following analysis also applies to the classic Class Def Test (self): #这里的

operation, and after the operation, after the memory growth. Hprof. If memory is growing, it is advisable to 3, 4 times. Then open the histogram (histogram) view separately, and in the object list, compare the retained size changes for each object.The first bit is not necessarily a leaked object, it is possible that it itself is a normal consumption of memory.The object of the leak was the sudden rise in the rankings. The distinguishing method is to look at the memory address of each object, th

difficult to sell ads, waiting for their will be closed. None of this has happened, of course, because their technicians have made full use of the resources available and have played them to the extreme. In the final analysis, squid is used as the Web cache server, while Apache provides real Web services behind squid. Of course, the use of such a schema must ensure that most of the home page is a static pa

, F5, etc., these products are expensive, but value for money, can provide very good performance and very flexible management capabilities. Yahoo China at the beginning of nearly 2000 servers using three or four alteon to be done.Web design software four-layer exchangeWhen you know the principle of hardware layer four switch, the software four layer exchange based on the OSI model comes into being, so the solution achieves the same principle, but the performance is slightly worse. But to meet a

The examples in this article describe the public, private, privileged, and static member usages in JavaScript. Share to everyone for your reference. The specific analysis is as follows: The following content is in the "Javascript.dom Advanced Program Design" Inside excerpt out, relatively easy to understand, especially in this record, easy to get started JavaScript friends to share ah. Copy Code code

Analysis of Operation instances of Python tuples [Create, assign, update, delete, etc.], and analysis of python instances This example describes how to operate Python tuples. We will share this with you for your reference. The details are as follows: # Coding = utf8''' tuple

operator, the need to remove the participating operation directly from the register, do not have to access the memory, such variables are called register variables, Use the keyword register as a description."Auto type (normal) static local variable has three different points"1. Different storage space allocation, the auto type is allocated on the stack, belongs to the dynamic storage class, the dynamic storage space, the function call after the end o

Essential Python Lib This section describes various types of libraries commonly used by Python for big data analysis. Numpy Python-specific standard module library for numerical computation, including: 1. A powerful n-dimensional Array object Array; 2. Mature (broadcast) function libraries; 3. toolkit for integrat