我使用datetime.strptime()来获取一个月的月份数,用英文写成。我想将它与一些PySide Qt接口结合使用。但是,一旦启动QApplication,月份识别似乎就会中断。
最小工作示例(我打印的语言环境表明它没有改变):
import sys, datetime
from PySide.QtCore import *
from PySide.QtGui import *
import locale
print(locale.getlocale())
full_date = 'February'
print(datetime.datetime.strptime(full_date,'%B'))
输出:
('en_US', 'UTF-8')
1900-02-01 00:00:00
现在,当我启动QApplication并执行相同操作时:
import sys, datetime
from PySide.QtCore import *
from PySide.QtGui import *
import locale
qt_app = QApplication(sys.argv)
print(locale.getlocale())
full_date = 'February'
print(datetime.datetime.strptime(full_date,'%B'))
输出:
('en_US', 'UTF-8')
Traceback (most recent call last):
File "my_timedate.py", line 12, in <module>
print(datetime.datetime.strptime(full_date,'%B'))
File "/usr/lib/python3.5/_strptime.py", line 510, in _strptime_datetime
tt, fraction = _strptime(data_string, format)
File "/usr/lib/python3.5/_strptime.py", line 343, in _strptime
(data_string, format))
ValueError: time data 'February' does not match format '%B'
发生了什么事?为什么在启动QApplication后它会停止工作?