I've JSON there I want to identify whether it is an array of an object or just an array of string. How can we identify this in python?
arrayA = [{"name", "john", "address": "usa"}, {"name":"adam": "china"}]
arrayB = ["Country", "State"]
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Do you know how to check the type of a value? How to access an element from a list?jonrsharpe– jonrsharpe2020-11-26 18:06:12 +00:00Commented Nov 26, 2020 at 18:06
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Yes. like using isinstance (report_object_in_json, list) ?Harshit Thakurr– Harshit Thakurr2020-11-26 18:11:28 +00:00Commented Nov 26, 2020 at 18:11
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So have you tried that? What happened? Note that when you parse JSON in Python arrays become lists and objects become dictionaries.jonrsharpe– jonrsharpe2020-11-26 18:12:15 +00:00Commented Nov 26, 2020 at 18:12
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Yeah, I did and it passed. Passed for both arrayA and arrayBHarshit Thakurr– Harshit Thakurr2020-11-26 18:14:28 +00:00Commented Nov 26, 2020 at 18:14
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Then what is your problem?jonrsharpe– jonrsharpe2020-11-26 18:17:08 +00:00Commented Nov 26, 2020 at 18:17
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1 Answer
The list comprehension will iterate over the list and create a new list with a boolean for each value. The value of the boolean depend of the type of the element.
Then, all() will check if all the elements in the sequence is True.
array_a = [{"name": "john", "address": "usa"},
{"name": "adam", "address": "china"}]
array_b = ["Country", "State"]
array_c = ["Country", "State", {"name": "adam", "address": "china"}]
print(all(isinstance(elem, str) for elem in array_a))
# False
print(all(isinstance(elem, str) for elem in array_b))
# True
print(all(isinstance(elem, str) for elem in array_c))
# False
If you don't know this form of statement [<expression> for <variable> in <iterable>], this is how it works: Data Structures - List Comprehensions
edit: Thanks B. Morris for your comment ;)
1 Comment
Dorian Turba
Haha mybad that's true !