python and matplotlib server side to generate .pdf documents

i would like to write a server side python script that generate .pdf documents. for the moment i have Python 2.7 installed server side and matplolib installed server side too. A simple script that create a simple plot and generate a .png picture works. this is the script i use : # to access standard output : import sys # select a non-GUI backend : import matplotlib matplotlib.use('Agg')

python和matplotlib服务器端来生成.pdf文件

我想写一个生成.pdf文件的服务器端python脚本。 目前我有Python 2.7安装服务器端和matplolib安装服务器端。 一个简单的脚本,创建一个简单的情节,并生成一个.png图片的作品。 这是我使用的脚本: # to access standard output : import sys # select a non-GUI backend : import matplotlib matplotlib.use('Agg') #matplotlib.use("cairo.pdf") #matplotlib.use('PDF') # import plotting module : import matplotli

Python: how to share an object instance across multiple invocations of a script

I'm use a library which provides a python interface to an external program. This allows me to create: foo = Foo() The code above starts a new instance of the Foo program that I can control from within python. I have a python scripts which needs to be invoked multiple times and depending on external parameters, tell a single instance of the external Foo program to do different things. Ob

Python:如何在脚本的多个调用中共享一个对象实例

我使用一个为外部程序提供python接口的库。 这使我可以创建: foo = Foo() 上面的代码启动了一个新的Foo程序实例,我可以在python中进行控制。 我有一个需要多次调用的python脚本,并且根据外部参数,告诉外部Foo程序的一个实例做不同的事情。 很明显,我做不到 foo = Foo()每次, 因为每次脚本运行时都会创建一个Foo的新实例。 我想要做的是创建foo= Foo()一次,并让多个调用共享同一个实例。 目前我只想创建一次

Consuming a rabbitmq message queue with multiple threads (Python Kombu)

I have a single RabbitMQ exchange with a single queue. I wish to create a daemon that runs multiple threads and works through this queue as quickly as possible. The "work" involves communicating with external services, so there will be a fair amount of blocking going on within each consumer. As such, I want to have multiple threads all dealing with messages from the same queue. I

使用具有多个线程的rabbitmq消息队列(Python Kombu)

我有一个单一队列的RabbitMQ交换机。 我希望创建一个运行多个线程并尽快通过此队列的守护进程。 “工作”涉及与外部服务的沟通,所以每个消费者内部都会有相当数量的阻塞。 因此,我想要有多个线程处理来自同一队列的消息。 我可以通过消耗主线程上的队列来实现此目的,然后将传入的工作归入其他线程池,但是有没有办法启动多个使用者,每个使用者都在自己的线程环境中? 看一下芹菜 - 它是为排队和处理来自AMPQ经纪人的任

Notify client on database update

I'm trying to use a Tornado web socket server to notify my user when changes are made to a database in realtime. I was hoping to use HTML5 web sockets for this, even though most browsers don't support them. None of the demos that come with the Tornado package use web sockets and they are not mentioned in the documentation, so I have no idea how to get started. The few examples I could

通知客户端数据库更新

我试图使用Tornado Web套接字服务器来通知我的用户实时更改数据库的时间。 我希望为此使用HTML5网络套接字,尽管大多数浏览器都不支持它们。 没有Tornado软件包附带的演示使用网络套接字,并且它们在文档中未提及,所以我不知道如何开始。 我可以在谷歌上找到的几个例子都不起作用,或者记录不完整。 有没有人有我可以如何使用Tornado将数据推送到客户端的任何示例,当MySQL数据库已更新或类似的东西我可以学习? Lee的回

ANT doesn't get exit code return by a python script

I'm currently using ant for building my java project on a Windows XP machine. I have different tasks defined in the build.xml and one of this is the exec of a Python script for analyzing the application output. I would like to make ANT failing when a particolar tag is discovered by script. I'm trying using: sys.exit(1) or os.system("EXIT 1") the second one in particular execute the

ANT不会通过python脚本返回退出代码

我目前使用ant在Windows XP机器上构建我的Java项目。 我在build.xml中定义了不同的任务,其中一个是用于分析应用程序输出的Python脚本的exec。 当脚本发现一个particolar标签时,我想让ANT失败。 我正在尝试使用: sys.exit(1) 要么 os.system("EXIT 1") 第二个特别执行控制台命令EXIT,如果在浴文件中执行,则成功地使构建过程失败。不幸的是,ant不能在启动的脚本中显示退出代码并正常进行,直到结束显示BUILD BUILD SU

Hidden features of Python

What are the lesser-known but useful features of the Python programming language? Try to limit answers to Python core. One feature per answer. Give an example and short description of the feature, not just a link to documentation. Label the feature using a title as the first line. Quick links to answers: Argument Unpacking Braces Chaining Comparison Operators Decorators Defaul

Python的隐藏功能

Python编程语言的鲜为人知的但有用的功能是什么? 尝试限制Python核心的答案。 每个答案一个功能。 给出一个示例和功能的简短描述,而不仅仅是文档的链接。 作为第一行使用标题标记该功能。 快速链接到答案: 参数拆包 背带 链接比较运算符 装饰 默认参数陷阱/可变默认参数的危险 叙 字典默认.get值 文档字符串测试 省略切片语法 列举 对于/其他 函数作为iter()参数 生成器表达式 import

Hidden features of Python

What are the lesser-known but useful features of the Python programming language? Try to limit answers to Python core. One feature per answer. Give an example and short description of the feature, not just a link to documentation. Label the feature using a title as the first line. Quick links to answers: Argument Unpacking Braces Chaining Comparison Operators Decorators Defaul

Python的隐藏功能

Python编程语言的鲜为人知的但有用的功能是什么? 尝试限制Python核心的答案。 每个答案一个功能。 给出一个示例和功能的简短描述,而不仅仅是文档的链接。 作为第一行使用标题标记该功能。 快速链接到答案: 参数拆包 背带 链接比较运算符 装饰 默认参数陷阱/可变默认参数的危险 叙 字典默认.get值 文档字符串测试 省略切片语法 列举 对于/其他 函数作为iter()参数 生成器表达式 import

From apprentice to guru

I've been learning, working, and playing with Python for a year and a half now. As a biologist slowly making the turn to bio-informatics, this language has been at the very core of all the major contributions I have made in the lab. I more or less fell in love with the way Python permits me to express beautiful solutions and also with the semantics of the language that allows such a natural

从徒弟到专家

我一直在学习,工作和使用Python一年半。 作为一名慢慢转向生物信息学的生物学家,这种语言一直是我在实验室做出的所有主要贡献的核心。 我或多或少地爱上了Python允许我表达美丽解决方案的方式,以及语言的语义,从思想到可行代码的自然流动。 我想知道的是你对这个或其他论坛中很少见到的问题的回答。 这个问题对于我来说对于Python改进途中的任何人来说似乎都是重中之重,但是谁不知道他的下一步应该是什么。 让我总结

Python boolean truth tests

Possible Duplicate: Python Ternary Operator Does Python have an equivalent of the ternary operator?: ( x < 5 ? 1 : 0 ) Or must I express the same thing with an if-else pair? You can use a conditional expression: 1 if x < 5 else 0 In code written for very old versions of Python, you may also see: x < 5 and 1 or 0 However, the conditional expression form is preferred for Python

Python布尔真理测试

可能重复: Python三元运算符 Python是否有ternary运算符? ( x < 5 ? 1 : 0 ) 或者我必须用if-else对表达同样的事情吗? 您可以使用条件表达式: 1 if x < 5 else 0 在为非常旧版本的Python编写的代码中,您可能还会看到: x < 5 and 1 or 0 但是,Python 2.5及更高版本首选条件表达式表单。 Python有: 1 if x < 5 else 0 或旧式: x < 5 and 1 or 0

how to write if and else in a single line in python

Possible Duplicate: Ternary conditional operator in Python I am working on python and trying to save data in to database Suppose i had below code conn = mdb.connect(user='root', passwd='redhat', db='Data', host='localhost', charset="utf8") ex_li = ['stri_one','stri_two','stri_three','stri_four'] if ex_li[0] != '': campaignID = ex_li[0] else: campaignID = '' if ex_li[1] != '':

如何写python中的if和else

可能重复: Python中的三元条件运算符 我正在研究python并试图将数据保存到数据库中假设我有下面的代码 conn = mdb.connect(user='root', passwd='redhat', db='Data', host='localhost', charset="utf8") ex_li = ['stri_one','stri_two','stri_three','stri_four'] if ex_li[0] != '': campaignID = ex_li[0] else: campaignID = '' if ex_li[1] != '': keywordID = ex_li[1] else: keywordID = '' ...