Python:PyDateTime_FromTimestamp的用法 [英] Python: Usage of PyDateTime_FromTimestamp

问题描述

我正在处理python c-extension，并想创建一个带有unix时间戳的python datetime对象的实例.

I'm working on a python c-extension and want to create an instance of python datetime object with a unix timestamp.

在文档站点上( http://docs.python.org/c-api/datetime.html )，我发现了函数PyDateTime_FromTimestamp()，该函数会根据输入参数返回新的引用.

On the documentation site ( http://docs.python.org/c-api/datetime.html ) I found the function PyDateTime_FromTimestamp() which returns a new reference based on an input parameter.

说明如下: 创建并返回一个新的datetime.datetime对象，该对象具有适合传递给datetime.datetime.fromtimestamp()的参数元组.

我尝试使用PyFloat_Object调用该函数，但是该函数始终返回NULL(即使我只是简单地输入0).

I tried out to call the function with a PyFloat_Object but the function always returns NULL (even if I simply put in 0).

有人举过一个例子，我如何调用该函数，或者可以提示需要什么样的参数元组才能起作用?

Does somebody have an example how I have to call the function or can give a hint what kind of parameter tuple is required to get it work?

谢谢！

推荐答案

谢谢Ignacio！有时，一些小提示可以解决问题-这里是完整的工作示例:

Thank you Ignacio! Sometimes small hints make the solution - here the full working example:

static double doubleValue = 1314761451;  
PyObject *floatObj = NULL;  
PyObject *timeTuple = NULL;  
PyObject *dateTime = NULL;  
floatObj = PyFloat_FromDouble(doubleValue);  
timeTuple = Py_BuildValue("(O)", floatObj);  
dateTime = PyDateTime_FromTimestamp(timeTuple);

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