Python parsing json data

Question

I have a json object saved inside test_data and I need to know if the string inside test_data['sign_in_info']['package_type'] contains the string "vacation_package" in it. I assumed that in could help but I'm not sure how to use it properly or if it´s correct to use it. This is an example of the json object:

"checkout_details": {
        "file_name" : "pnc04",
        "test_directory" : "test_pnc04_package_today3_signedout_noinsurance_cc",
        "scope": "wdw",
          "number_of_adults": "2",
          "number_of_children": "0",
          "sign_in_info": {
              "should_login": false,
              **"package_type": "vacation_package"**
          },

package type has "vacation_package" in it, but it's not always this way. For now I´m only saving the data this way:

package_type = test_data['sign_in_info']['package_type']

Now, is it ok to do something like:

p= "vacation_package"
if(p in package_type):
    ....

Or do I have to use 're' to cut the string and find it that way?

is test_data['sign_in_info']['package_type'] == 'vacation_package' not appropriate? — Brian Cain
– Brian Cain, Commented Mar 26, 2015 at 20:50

James Kelleher · Accepted Answer · 2015-03-26 20:47:30Z

1

You answer depends on what exactly you expect to get from test_data['sign_in_info']['package_type']. Will 'vacation_package' always be by itself? Then in is fine. Could it be part of a larger string? Then you need to use re.search. It might be safer just to use re.search (and a good opportunity to practice regular expressions).

answered Mar 26, 2015 at 20:47

James Kelleher

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2 Comments

NachoMiguel Over a year ago

That's my concern. "vacation_package" may noy always be alone, sometimes comes with something like "vacation_package_tickets". So re would be a good solution?

James Kelleher Over a year ago

Using re.search would definitely work. You might be able to use just ==, but that would fail in the case of something like "vacation_package, vacation_package_tickets".

michaelb · Accepted Answer · 2015-03-26 20:28:23Z

No need to use re, assuming you are using the json package. Yes, it's okay to do that, but are you trying to see if there is a "package type" listed, or if the package type contains vacation_package, possibly among other things? If not, this might be closer to what you want, as it checks for exact matches:

import json
data = json.load(open('file.json'))

if data['sign_in_info'].get('package_type') == "vacation_package":
   pass # do something

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