Python string to array : TypeError: iteration over a 0-d array

Question

I have a string from a field in a query set which looks like this:

[{'thirdParty': 'Funds Transfer'}, {'category': 'External Transfers'}, {'creditDebit': 'credit'}]

I want to be able to loop through the elements in orther to be able to get

{'thirdParty': 'Funds Transfer'}
{'category': 'External Transfers'}
{'creditDebit': 'credit'}

And also to be able to loop through the keys of that object

I am trying the following but I keep getting an error: TypeError: iteration over a 0-d array

import numpy as np
tags = "[{'thirdParty': 'Funds Transfer'}, {'category': 'External Transfers'}, {'creditDebit': 'credit'}]"
# print(type(tags))
# <class 'str'>
arr = list(np.array(tags))
# print(type(tags))
# <class 'numpy.ndarray'>
# print(tags)
# [{'thirdParty': 'Funds Transfer'}, {'category': 'External Transfers'}, {'creditDebit': 'credit'}]
for d in arr:
    print(d)

NAGA RAJ S · Accepted Answer · 2020-06-29 06:09:59Z

3

try this because you added Double quotes in tags

import numpy as np
tags = [{'thirdParty': 'Funds Transfer'}, {'category': 'External Transfers'}, {'creditDebit': 'credit'}]
arr = list(np.array(tags))
# print(type(tags))
# <class 'numpy.ndarray'>
# print(tags)
# [{'thirdParty': 'Funds Transfer'}, {'category': 'External Transfers'}, {'creditDebit': 'credit'}]
for d in arr:
    print(d)

output

{'thirdParty': 'Funds Transfer'}
{'category': 'External Transfers'}
{'creditDebit': 'credit'}

edited Jun 29, 2020 at 6:09

answered Jun 29, 2020 at 6:03

NAGA RAJ S

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5 Comments

Manza Over a year ago

it works perfect when i try from a python online, but not when i try from django, i am wonder why, the error stills: iteration over a 0-d array

Mark Over a year ago

tags is already a list...why make a numpy array and then immediately make a list just to get back where you started?

Manza Over a year ago

@MarkMeyer that is not correct when I print(type(key.tags)) i get <class 'str'>, it doesnt said <class 'list'>

NAGA RAJ S Over a year ago

if you give string to numpy array it will show 0-d array you have to give list where you can check lis[0][0]='thirdParty': 'Funds Transfer'.

Manza Over a year ago

@NAGARAJS exactly that is precisely my question

Vishal Singh · Accepted Answer · 2020-06-29 06:32:45Z

1

import ast

tags = "[{'thirdParty': 'Funds Transfer'}, {'category': 'External Transfers'}, {'creditDebit': 'credit'}]"
tags_list = ast.literal_eval(tags)

print(tags_list)

Output:

[
    {"thirdParty": "Funds Transfer"},
    {"category": "External Transfers"},
    {"creditDebit": "credit"},
]

answered Jun 29, 2020 at 6:32

Vishal Singh

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