ValueError: time data does not match

Question

所以我得到了这个错误

ValueError: time data '8/16/2016 9:55' does not match format '%m/&d/%Y %H:%M'.

我知道 %m 是带有两位数字（零填充）的月份格式。正如我们所见，“8”（八月）没有填充零。这是这个错误的问题吗？我该如何解决这个问题？

import datetime as dt
result_list = []
for a in ask_posts:
    result_list.append([a[6], int(a[4])])
counts_by_hour = {}
comments_by_hour = {}
date_format = '%m/&d/%Y %H:%M'

for row in result_list:
    date = row[0]
    comment = row[1]
    time = dt.datetime.strptime(date, date_format).strftime("%H")
    ``` I want  to extract the Hour only```
    if time not in counts_by_hour:
        counts_by_hour[time] = 1
        comments_by_hour[time] = comment
    else:
        counts_by_hour[time] += 1
        comments_by_hours[time] += comment

Answer 1

您的日期格式有误 % not &

import datetime as dt
result_list = []
for a in ask_posts:
    result_list.append([a[6], int(a[4])])
counts_by_hour = {}
comments_by_hour = {}
date_format = '%m/%d/%Y %H:%M' #  change & with %

    for row in result_list:
        date = row[0]
        comment = row[1]
        time = dt.datetime.strptime(date, date_format).strftime("%H")
        ``` I want  to extract the Hour only```
        if time not in counts_by_hour:
            counts_by_hour[time] = 1
            comments_by_hour[time] = comment
        else:
            counts_by_hour[time] += 1
            comments_by_hours[time] += comment

ValueError: time data does not match

ValueError: time data does not match

python

python-3.x

python-datetime