Guided project: Exploring hacker news posts - Need Help

Q&A DQ Courses
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#1

Question:
I am not getting what I’m doing wrong. Can someone please review my code based on question 5 - 8 ?
The first 4 questions were clear.

Screen Link: https://app.dataquest.io/m/404/guided-project%3A-exploring-hacker-news-posts/5/finding-the-amount-of-ask-posts-and-comments-by-hour-created

Your Code:

import datetime as dt
result_list = []

for element in ask_posts:
    created_at = element[6]
    comments_post = element[4]
    result_list.append([created_at, int(comments_post)])

result_list[:5]

Output:
[['8/16/2016 9:55', 6],
 ['11/22/2015 13:43', 29],
 ['5/2/2016 10:14', 1],
 ['8/2/2016 14:20', 3],
 ['10/15/2015 16:38', 17]]

counts_by_hour = {}
comments_by_hour = {}

format_string = "%m/%d/%Y %H:%M"
for row in result_list:
    hour = row[0]
    hour_object = dt.datetime.strptime(hour, format_string)
    hour = dt.datetime.strftime("%H:%M")
    if hour not in counts_by_hour.keys():
        counts_by_hour.key == 1
        comments_by_hour.key == row[1]
    if hour in counts_by_hour.keys():
        counts_by_hour.value += 1
        comments_by_hour += row[1]
1 Like
#2

Hi @LuukvanVliet,

The first error in your code:

----> 8 hour = dt.datetime.strftime("%H:%M")
TypeError: descriptor 'strftime' requires a 'datetime.date' object but received a 'str'

can be fixed by replacing dt.datetime.strftime("%H:%M") with hour_object.strftime("%H:%M"). However, looking at the errors associated with dictionaries, I would recommend you to go through the Dictionaries and Frequency Tables mission once again.

I believe that this post will help you to understand the Dictionary syntax:

Best,
Sahil