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have passed "Virtualenv numpy-env" The command creates and enters the isolated environment through the activate operation.NOTE 2: the GCC version used in this note is a 3.4.5 version of GCC, but it is still possible to compile the latest version of the NumPy v1.9.2.1. High-performance numpy packages typically rely on Lapack and Atlas librariesLapack and Atlas are two of the most highly powerful tool libraries for linear algebra operations in the fiel

XML is executed, the module in the current directory is imported instead of the system-standard XML.With this in hand, we can build a package and import it as a normal module, so that we can access each module in the package directly.The package definition in Python is simple, and its hierarchy is the same as the hierarchy of the directory in which the program resides, similar to Java, except that the packages in Python must contain a__init__.pyThe f

Python can use Easy_install for various package installations or package offload using Easy_install-m package-name, but there is a problem that the installed version cannot be controlled.Using the source code to install a variety of packages can be extracted after unpacking the package in the root directory of the Python setup.py install installation, but uninstall the general it does not matter. About the method of unloading the source code installat

find or load mainclassTest2[email protected]:~/java/data_struct/ Package$ java com.ghostwu.Test2.Test2my name is GHOSTWU4, packaging all the classes into a jar file, called the jar package, for example, we put all the class files in the current directory into a jar package, can be used by others"Jar CVF ghostwu.jar com" Packages all files under the COM directory into a jar file, C: Create Jar file V: Production details F: Specify the name of the jar

a __init__.py file under this folder, 3. Place script files, compiled extensions, and child packages 4. Import pack.m1, pack.m2, pack.m3 , as needed Demo: Create a new pack.py file, if we want to reuse the function operation in calculator3.py, then you can create a new folder in the directory where the calculator3.py is located, if the name For bag, create a new __init__.py file in the Bag folder (must have), the content can be empty, the need to imp

Ubuntu package format is Deb, if you want to install the RPM package, you will first use alien to convert the RPM to Deb.sudo apt-get installs alien #alien默认没有安装, so install it firstsudo alien xxxx.rpm #将rpm转换位deb, when done, generates a xxxx.deb with the same namesudo dpkg-i xxxx.deb #安装Note that the alien conversion of the Deb package does not guarantee 100% smooth installation, so you can find Deb best to use Deb directlySometimes the software that we want to use is not included in the Ubuntu

Pom.xml configuration for automatically downloading jar packages in MAVEN projectsWith maven2, the dependency is set inPom. XML and will help you to download all dependencies. The directory that the jar to M2_repo points to--------------------------------------------------------------------------------------------M2_repo is a storage location used to define the MAVEN 2 repository on the hard disk, and Windows defaults to the C:\Users\ machine name \.m

Maven's approach to importing external jar packages (If there is an external jar package)1. Question:When Maven adds a dependency package, the addition is unsuccessful and can optionally be imported into the repository via an external command.2. Command: (on DOS command line)MVN install:install-file-dfile= local jar Package Storage directory-dgroupid=jar package add dependent GroupID name-dartifactid=jar package Add dependent Artifactid name- Dversion

. For example, under the CPython3.3 version, the spam.py module is cached as __PYCACHE__/SPAM.CPYTHON-33.PYC. This naming convention guarantees a multi-version coexistence of compiled results.Python checks that the modification time of the source file is compared to the compiled version and needs to be recompiled if it expires. This is a completely automated process. And the compiled module is platform independent, so the same library can be shared between different architectures of the system,

Sometimes it is necessary to introduce some external jar packages in the project, which can not be found from the central warehouse, if it is normal Web project to put the jar directly under Wen-inf\lib and add build to path, but the MAVEN project does not work, The MAVEN project's jar package is managed through the MAVEN mechanism, which introduces the jar through the build path, no problem when writing the code, but there are problems with debugging

Python: Installing a third-party package with setup.py packagesOriginal December 10, 2016 15:17:56 Label: Python 8531 This time to introduce the Python third-party package installation, described in 3 ways, we introduce a way this time. See the links below for the first two ways.Pip Installhttp://blog.csdn.net/xxzhangx/article/details/52740227Easy_install and Pip.exe Installhttp://blog.csdn.net/xxzhangx/article/details/52337349This time to say is to use setup.py

Using GitHub as a MAVEN repository to publish your own jar packages relies on implementing a set of common parts of multiple projects, avoiding the copying and pasting of code between multiple projects in your team.1, first in the local MAVEN location configuration file Setting.xml (without the file on the new file), add the configuration Maven warehouse address. I'm using my GitHub warehouse as a maven repository.2. Add the MAVEN deployment plugin Ma

1 jar package closer to dynamic link libraryJava at compile time, although the import of other jar package, but it does not copy the other jar in the source code into its own class file, it just uses the name in the jar package.At the time of execution, both your own and dependent jar packages are loaded into the JVM, and the link is completed before execution, which is more like a dynamic-link library.2 JVM Find jar PackageVarious class loader go to

One, Module 1. What is a module?Common scenario: A module is a file that contains Python definitions and declarations, and the file name is the suffix of the module name plus the. Py.In fact, the import loaded module is divided into four general categories:1 code written using Python (. py file)2 C or C + + extensions that have been compiled as shared libraries or DLLs3 packages for a set of modules4 built-in modules written and linked to the Python i

1. Required Jar Package Json-lib.jar：http://sourceforge.net/projects/json-lib/files/json-lib/This package also requires the following dependent packages.2, create the JavaBean file, take the following example:3. Bean/list/map generates JSON code:4, the results of the operation: {"id": 1, "Moblie": "1341234568", "name": "Wang", "Sex": "Male"}[{"id": 2, "Moblie": "13123323", "name": "Wang1", "Sex": "female"},{"id": 3, "Moblie": "13232343673", "name": "W