What is Requirement ?

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The IEEE 610 standard defines a requirement as: (1). a condition or capability needed by a user to solve a problem or achieve an objective; (2). a condition or capability that must be met or possessed by a system or system component to satisfy a cont…

pip assert_source_matches_version(self)版本验证报错Source in %s has version %s, which satisfies requirement %s的解决方式

在win8.1下为了安装flask模块,开始安装pip,结果发生了上篇博客里面的错误ntpath join(path, *paths) 发生UnicodeDecodeError.解决之后继续发现版本验证总是错误. 这就很奇怪了,因为我只安装了py 2.7.8版本,而flask的文档上2.4以上都是支持的,我到了pip的目录下找到报错的函数C:\Python27\Lib\site-packages\pip-1.5.6-py2.7.egg\pip\req.py def assert_source_m…

composer install 遇到问题 Problem 1 - phpunit/phpunit 5.7.5 requires php ^5.6 || ^7.0 -> your PHP version (5.5.3 0) does not satisfy that requirement.

$ composer install Loading composer repositories with package information Updating dependencies (including require-dev) Your requirements could not be resolved to an installable set of packages. Problem 1 - phpunit/phpunit 5.7.5 requires php ^5.6 ||…

requirement failed: Unacceptable value for property 'kafka.timeline.metrics.host_in_memory_aggregation', boolean values must be either 'true' or 'false

requirement failed: Unacceptable value for property 'kafka.timeline.metrics.host_in_memory_aggregation', boolean values must be either 'true' or 'false ambari 2.7.0 HDP 3.0 kafka 1.0.1 @li Hao Additionally the "host_in_memory_aggregation" value…

SAP MM 预留单据里的Base date和Requirement date

SAP MM 预留单据里的Base date和Requirement date Base date可以在预留创建的初始界面指定, 这个日期可以作为预留各个行项目默认的requirement date. F1帮助文档如下: Base date for reservation Specifies the date for which the goods movement is planned. Use For each item of the reservation, the system us…

Could not find a version that satisfies the requirement PIL

Python Imageing Library 简称 PIL Python常用的图像处理库之一 Pillow是PIL一个fork. C:\Users\dangzhengtao>pip install PIL Collecting PIL Could not find a version that satisfies the requirement PIL (from versions: ) No matching distribution found for PIL 更换为: C:\Users\…