问题
I'm trying to split a dictionary with a list within a pandas column but it isn't working for me...
The column looks like so when called;
df.topics[3]
Output
"[{'urlkey': 'webdesign', 'name': 'Web Design', 'id': 659}, {'urlkey': 'productdesign', 'name': 'Product Design', 'id': 2993}, {'urlkey': 'internetpro', 'name': 'Internet Professionals', 'id': 10102}, {'urlkey': 'web', 'name': 'Web Technology', 'id': 10209}, {'urlkey': 'software-product-management', 'name': 'Software Product Management', 'id': 42278}, {'urlkey': 'new-product-development-software-tech', 'name': 'New Product Development: Software & Tech', 'id': 62946}, {'urlkey': 'product-management', 'name': 'Product Management', 'id': 93740}, {'urlkey': 'internet-startups', 'name': 'Internet Startups', 'id': 128595}]"
I want to only be left with the 'name' and 'id' to put into separate columns of topic_1, topic_2, and so forth.
Appreciate any help.
回答1:
You can give this a try.
import json
df.topics.apply(lambda x : {x['id']:x['name'] for x in json.loads(x.replace("'",'"'))} )
Your output for the row you gave is :
{659: 'Web Design',
2993: 'Product Design',
10102: 'Internet Professionals',
10209: 'Web Technology',
42278: 'Software Product Management',
62946: 'New Product Development: Software & Tech',
93740: 'Product Management',
128595: 'Internet Startups'}
回答2:
You should try a simple method
dt = df.topic[3]
li = []
for x in range(len(dt)):
t = {dt[x]['id']:dt[x]['name']}
li.append(t)
print(li)
Output is-
[{659: 'Web Design'},
{2993: 'Product Design'},
{10102: 'Internet Professionals'},
{10209: 'Web Technology'},
{42278: 'Software Product Management'},
{62946: 'New Product Development: Software & Tech'},
{93740: 'Product Management'},
{128595: 'Internet Startups'}]
First we takes the value of df.topic[3] in dt
which is in form of list and dictionary inside the list, then we take an temp list li[]
in which we add(append) our values, Now we run the loop for the length of values of de.topic(which we takes as dt), Now in t
we are adding id or name by dt[0]['id']
or dt[0]['name']
which is '659:'Web Design'
as x increase all values are comes in t, then by { : }
we are converting the values in Dictionary and append it to the temporary list li
来源:https://stackoverflow.com/questions/47782052/splitting-multiple-dictionaries-within-a-pandas-column