NameError：名称“ datetime”未定义 [英] NameError: name 'datetime' is not defined

问题描述

我正在自学Python，只是在探索。 Google说datetime是一个全局变量，但是当我尝试在终端中查找今天的日期时，我在问题标题中收到NameError吗？

I'm teaching myself Python and was just "exploring". Google says that datetime is a global variable but when I try to find todays date in the terminal I receive the NameError in the question title?

mynames-MacBook:pythonhard myname$ python
Enthought Canopy Python 2.7.3 | 64-bit | (default, Aug  8 2013, 05:37:06) 
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> date = datetime.date.today()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'datetime' is not defined
>>> 

推荐答案

您需要导入模块 datetime 首先：

You need to import the module datetime first:

>>> import datetime

在此之后它起作用：

>>> import datetime
>>> date = datetime.date.today()
>>> date
datetime.date(2013, 11, 12)

这篇关于NameError：名称“ datetime”未定义的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！