How to check if JSON have specified data?

Question

I need to check if JSON request have specified field. My request can be: {"ip": "8.35.60.229", "blackListCountry" : "Az"} or simply: {"ip": "8.35.60.229"}.

How to check if blackListCountry is exists in it?

userIP = request.json["ip"]
blackListCountry = request.json["blackListCountry"]
print(blackListCountry)

Possible duplicate of Most efficient method to check if dictionary key exists and process its value if it does — coder
– coder, Commented Oct 4, 2017 at 11:26
"json" is a text format, not a data type. What you have here is a plain dict. — bruno desthuilliers
– bruno desthuilliers, Commented Oct 4, 2017 at 12:02

Guillaume · Accepted Answer · 2017-10-04 11:24:06Z

2

request.json() actually return a dict, so you can use the .get() method which returns None if key is not found:

blackListCountry = request.json.get("blackListCountry")

if blackListCountry is None:
    # key is not found
else:
    print(blackListCountry)

answered Oct 4, 2017 at 11:24

Guillaume

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Thaian · Accepted Answer · 2017-10-04 11:21:30Z

1

The simplest way to do this:

x = {"ip": "8.35.60.229", "blackListCountry" : "Az"}
print('blackListCountry' in x)
> True

in search key 'blackListCountry' and return bool True or False.

answered Oct 4, 2017 at 11:21

Thaian

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Comments

Nandan Bhat · Accepted Answer · 2017-10-04 11:21:27Z

0

x = {"ip": "8.35.60.229", "blackListCountry" : "Az"}
if "blackListCountry" in x:
    #key exists
else:
    #key doesn't exists

answered Oct 4, 2017 at 11:21

Nandan Bhat

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