使用datetime.strptime创建datetime对象的列表 [英] create a list of datetime objects using datetime.strptime

问题描述

我有一个字符串列表.

I have a list of strings.

date_str = ["2012-11-04 1:05:21", "2013-11-03 1:05:21", "2014-11-02 1:07:31"]

我想将它们读取为日期时间对象.对于一个字符串，我做

I want to read them as datetime objects. For one string, I do

datetime.strptime(date_str[1], "%Y-%m-%d %H:%M:%S")

但是我不知道如何创建日期时间对象列表. 如果我使用

but I don't know how to create a list of datetime objects. If I use

datetime.strptime(date_str, "%Y-%m-%d %H:%M:%S")

我收到此错误:

TypeError: must be string, not list

我尝试使用循环:

x = datetime.strptime(date_str[0], "%Y-%m-%d %H:%M:%S")
for i in range(1,len(date_str)):
    x.append(datetime.strptime(date_str[i], "%Y-%m-%d %H:%M:%S"))

但出现以下错误

AttributeError: 'datetime.datetime' object has no attribute 'append'

是否可以创建日期时间对象列表?

Is there a way to create a list of datetime objects?

推荐答案

x必须为列表:

x = []
for i in range(len(date_str)):
    x.append(datetime.strptime(date_str[i], "%Y-%m-%d %H:%M:%S"))

然后，您可以附加所有日期时间对象.甚至更多的Pythonian:

then, you can append all your datetime objects. Or even more Pythonian:

x = [datetime.strptime(s, "%Y-%m-%d %H:%M:%S") for s in date_str]

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