英文:
Calculating days between multiple dates
问题
我正在尝试计算不同日期之间的天数、周数或月数。我正在使用这个计算来操作一个数据框并显示随时间变化的图表（条形图、折线图等）。我尝试使用以下代码来实现：
userdate = input("输入开始日期（YYYY-MM-DD）或键入“全部”以获取整个网络历史：")
startyear = userdate[0:4]
startmonth = userdate[5:7]
startday = userdate[8:10]
endyear = userenddate[0:4]
endmonth = userenddate[5:7]
endday = userenddate[8:10]
#年 月 日 格式
barstartdate = datetime.date(int(startyear), int(startmonth), int(startday))
#年 月 日 格式
barenddate = datetime.date(int(endyear), int(endmonth), int(endday))
#时间差
delta = datetime.timedelta(days=1)
#迭代日期范围
while (barstartdate <= barenddate):
print(barstartdate, end="\n")
barstartdate += delta
userdate 和 userenddate 是用户输入的日期值，格式为 YYYY-MM-DD。但是，当我运行这段代码时，我收到以下错误消息：
TypeError: descriptor 'date' for 'datetime.datetime' objects doesn't apply to an 'int' object
英文:
I am attempting to calculate the days, weeks, or months between different dates. I am using this calculation to manipulate a dataframe and show graphs over time (bar charts, line graphs, etc). I am attempting the use the following code to do so:
userdate = input("Input Start Date Here (YYYY-MM-DD) Or Type All For Entire Networking History: ")
startyear = userdate[0:4]
startmonth = userdate[5:7]
startday = userdate[8:10]
endyear = userenddate[0:4]
endmonth = userenddate[5:7]
endday = userenddate[8:10]
#year month day format
barstartdate = datetime.date(int(startyear),int(startmonth),int(startday))
#year month day format
barenddate = datetime.date(int(endyear),int(endmonth),int(endday))
#delta time
delta = datetime.timedelta(days=1)
#iterate over range of dates
while (barstartdate <= barenddate):
print(barstartdate, end="\n")
barstartdate += delta
userdate and userenddate are user inputted values for dates in the format YYYY-MM-DD. However, when I run this code, I get the following error message:
TypeError: descriptor 'date' for 'datetime.datetime' objects doesn't apply to a 'int' object
答案1
得分: 0
I Hope this is it cause it is not letting me comment with low reputation.
我希望这是正确的，因为它不允许我以低声望评论。
I think you're importing incorrectly the module with from datetime import datetime instead of import datetime.
我认为你导入模块时出错了，应该使用import datetime而不是from datetime import datetime。
So try with this:
所以请尝试使用以下代码：
import datetime
userdate = input("Enter userdate: ")
userenddate = input("Enter userenddate: ")
startyear = userdate[0:4]
startmonth = userdate[5:7]
startday = userdate[8:10]
endyear = userenddate[0:4]
endmonth = userenddate[5:7]
endday = userenddate[8:10]
#year month day format
barstartdate = datetime.date(int(startyear),int(startmonth),int(startday))
#year month day format
barenddate = datetime.date(int(endyear),int(endmonth),int(endday))
#delta time
delta = datetime.timedelta(days=1)
#iterate over range of dates
while (barstartdate <= barenddate):
print(barstartdate, end="\n")
barstartdate += delta
最后，你可能要检查@dakdad的字符串格式化方法：
import datetime
userdate = input("Enter userdate: ")
date_obj = datetime.datetime.strptime(userdate, '%Y-%m-%d')
print(date_obj)
Output:
输出：
Enter userdate: 1993-05-06
1993-05-06 00:00:00
英文:
I Hope this is it cause it is not letting me comment with low reputation.
I think you're importing incorrectly the module with
from datetime import datetime instead of import datetime
So try with this:
import datetime
userdate = input("Enter userdate: ")
userenddate = input("Enter userenddate: ")
startyear = userdate[0:4]
startmonth = userdate[5:7]
startday = userdate[8:10]
endyear = userenddate[0:4]
endmonth = userenddate[5:7]
endday = userenddate[8:10]
#year month day format
barstartdate = datetime.date(int(startyear),int(startmonth),int(startday))
#year month day format
barenddate = datetime.date(int(endyear),int(endmonth),int(endday))
#delta time
delta = datetime.timedelta(days=1)
#iterate over range of dates
while (barstartdate <= barenddate):
print(barstartdate, end="\n")
barstartdate += delta
Output:
Enter userdate: 1993-05-05
Enter userenddate: 1993-05-10
1993-05-05
1993-05-06
1993-05-07
1993-05-08
1993-05-09
1993-05-10
Finally you should probably check @dakdad method to format strings:
import datetime
userdate = input("Enter userdate: ")
date_obj = datetime.datetime.strptime(userdate, '%Y-%m-%d')
print(date_obj)
Output:
Enter userdate: 1993-05-06
1993-05-06 00:00:00
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