python3 implements mysql export excel

I. Preparations Python Tool Library Installation xlwt and xlrd Installation under 1.1win7 1.1.1 Method 1: Download and Install 1. From http://pypi.python.org/pypi/xlwt Download xlwt-1.0.0.tar.gz; 2. From http://pypi.python.org/pypi/xlrd Download xlrd-0.9.4.tar.gz; 3. Unzip the package; 4. Run under win7. [plain] view plain copy cmd ...

Posted by SystemOverload on Thu, 02 Jul 2020 17:02:27 +0200

Pure html cross-domain access to java interfaces

What is cross-domain? Cross-domain means that html access addresses and interface addresses are in different domains. As long as one of the domain names, protocols, and ports is satisfied, cross-domain means cross-domain. Why not cross-domain? Because of security issues, such as when a user visits a bank website, ...

Posted by phpvolution on Thu, 02 Jul 2020 16:33:10 +0200

Simple Logical Judgement

Title 1 Five athletes participated in the 10m platform diving competition and were asked to predict the result Player A said: B second, I third; Player B said: I'm second, E fourth; Player C said: I am the first, D the second; Player D said: C In the end, I am third; Player E said: I am fourth, A ...

Posted by jcornett on Wed, 01 Jul 2020 18:23:37 +0200

Record two official ViewPager animations

No more nonsense, just code it 1. This class is the basic implementation of ViewPager, and then add viewPager.setPageTransformer(); this method, you can add switching animation, very convenient By the way, viewPager.setOffscreenPageLimit(4) ; this method, by default, is 1, which means preloading an adjacent page, one on the left and one on t ...

Posted by jeankaleb on Wed, 01 Jul 2020 17:43:26 +0200

. Net architecture programming

Programming questions 1. Implement fuzzy query in the controller and return the result to the view. (example of fuzzy query user name) [front view code] <form action="QueryUsername" method="post"> User name: < input type = "text" name = "username" / > < input type = &q ...

Posted by mansuang on Wed, 01 Jul 2020 17:06:58 +0200

Separation of dynamic and static state by Nginx+Tomcat

Add group groupadd www Add user WWW: useradd - G www under www group Modify configuration file nginx.conf : user www www; worker_processes 2; events{ worker_connections 1024; } http{ #Set the default type to binary stream default_type application/octet-stream; server_names_hash_bucket_size 128; #Specify the hea ...

Posted by dheeraj4uuu on Wed, 01 Jul 2020 16:58:12 +0200

JavaScript learning - Array object

Defining arrays Array objects are used to store a series of values in separate variable names. We use the keyword new to create array objects. The following code defines an array object called myArray: var myArray=new Array(); There are two ways to assign values to an array (you can add as many values as you want, ...

Posted by turkman on Wed, 01 Jul 2020 16:29:16 +0200

NDK development series one -- image brightness and saturation processing

github code gate: https://github.com/18380438200/NdkUse First, the effect picture: Preview The implementation method of java is as follows: public class JavaFilter { public static final float brightness = 0.2f; //brightness public static final float contrainst = 0.2f; //Contrast, color deepening public static Bitmap getImag ...

Posted by gerrydewar on Tue, 30 Jun 2020 18:28:03 +0200

RxJava Source Analysis (2)

This time we are talking about the thread switching process of RxJava. First, look at a diagram: The RxJava code for this time series diagram: public void demo2(){ createObservable() .subscribeOn(Schedulers.newThread())//Observed executes subscribe on a new thread .observeOn(AndroidSchedulers.ma ...

Posted by Danestar on Tue, 30 Jun 2020 18:16:07 +0200

Leetcode 65. Significant digits

This question perfectly explains what "test case oriented programming" is. Because there are many situations to be considered, the basic idea is to first write rules to judge the invalid situation according to the given test cases, and then make special judgment on the remaining cases according to the submitted errors. If all "i ...

Posted by weiwei on Tue, 30 Jun 2020 10:51:32 +0200