In this article, we will see how to read a JSON file in Python with examples,
Step 1:
The first thing you need to do is import the json module,
import json
Step 2:
Now let's create a JSON object that we want to read and store it in a variable,
json_str = """[
{
"name":"Mike",
"age":29,
"city":"New York"
},
{
"name":"John",
"age":21,
"city":"Chicago"
},
{
"name":"Sam",
"age":23,
"city":"London"
},
{
"name":"Brian",
"age":19,
"city":"Madrid"
},
{
"name":"Danny",
"age":27,
"city":"New York"
}
]"""
Step 3:
Now let's convert the JSON string to JSON Object
json_obj= json.loads(json_str)
Step 4:
Now let's read the content of JSON object, not that as we have a JSON Object of arrays, we can read it with its index starting from zero,
print(json_obj[0]["name"])
print(json_obj[0]["age"])
print(json_obj[0]["city"])
print("-----------------")
print(json_obj[1]["name"])
print(json_obj[1]["age"])
print(json_obj[1]["city"])
Full Example to Read JSON in Python:
import json
json_str = """[
{
"name":"Mike",
"age":29,
"city":"New York"
},
{
"name":"John",
"age":21,
"city":"Chicago"
},
{
"name":"Sam",
"age":23,
"city":"London"
},
{
"name":"Brian",
"age":19,
"city":"Madrid"
},
{
"name":"Danny",
"age":27,
"city":"New York"
}
]"""
json_obj = json.loads(json_str)
print(json_obj[0]["name"])
print(json_obj[0]["age"])
print(json_obj[0]["city"])
print("-----------------")
print(json_obj[1]["name"])
print(json_obj[1]["age"])
print(json_obj[1]["city"])
Output:
Mike
29
New York
-----------------
John
21
Chicago
If you are reading JSON where you do not know the size of it and want to iterate over it, you can use a for-each loop
for element in json_obj:
print(element['name'])
print(element['age'])
print(element['city'])
print("-----------")
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