如何把字串轉換成時間

在python中，日期、時間、字串的相互轉換。

（1）可以將dateTime轉換為date，date不能直接轉換為dateTime

import datetime
dateTime_p = datetime.datetime.now()  
date_p = dateTime_p.date() 
print(dateTime_p) #2019-01-30 15:17:46.573139
print(date_p) #2019-01-30

（2）日期類型date轉換為字串str

#!/usr/bin/env python3
import datetime
date_p = datetime.datetime.now().date()
str_p = str(date_p)
print(date_p,type(date_p)) #2019-01-30 <class &#39;datetime.date&#39;>
print(str_p,type(str_p)) #2019-01-30 <class &#39;str&#39;>

（3）字串型別str轉換為dateTime型別

import datetime
str_p = '2019-01-30 15:29:08'
dateTime_p = datetime.datetime.strptime(str_p,'%Y-%m-%d %H:%M:%S')
print(dateTime_p) # 2019-01-30 15:29:08

（4）dateTime型別轉為str型別

import datetime
dateTime_p = datetime.datetime.now()
str_p = datetime.datetime.strftime(dateTime_p,'%Y-%m-%d')
print(dateTime_p) # 2019-01-30 15:36:19.415157

（5）字串型別str轉換為date類型

#!/usr/bin/env python3
import datetime
str_p = '2019-01-30'
date_p = datetime.datetime.strptime(str_p,'%Y-%m-%d').date()
print(date_p,type(date_p)) # 2019-01-30 <class &#39;datetime.date&#39;>

另外dateTime型別和date型別可以直接做加1減1這種操作

#!/usr/bin/env python3
import datetime
# today = datetime.datetime.today()
today = datetime.datetime.today().date()
yestoday = today + datetime.timedelta(days=-1)
tomorrow = today + datetime.timedelta(days=1)
print(today) # 2019-01-30
print(yestoday)# 2019-01-29
print(tomorrow)# 2019-01-31

以上是如何把字串轉換成時間的詳細內容。更多資訊請關注PHP中文網其他相關文章！