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(CkPython) Modify Parts of JSON DocumentDemonstrates how to modify parts of a JSON document. This example uses the following JSON document: { "fruit": [ { "kind": "apple", "count": 24, "fresh": true, "extraInfo": null, "listA": [ "abc", 1, null, false ], "objectB": { "animal" : "monkey" } }, { "kind": "pear", "count": 18, "fresh": false, "extraInfo": null "listA": [ "xyz", 24, null, true ], "objectB": { "animal" : "lemur" } } ], "list" : [ "banana", 12, true, null, "orange", 12.5, { "ticker": "AAPL" }, [ 1, 2, 3, 4, 5 ] ], "alien" : true } Note: This example requires Chilkat v11.0.0 or greater.
import sys import chilkat success = False json = chilkat.CkJsonObject() # Load the JSON from a file. success = json.LoadFile("qa_data/json/modifySample.json") if (success == False): print(json.lastErrorText()) sys.exit() # This example will not check for errors (i.e. null / false / 0 return values)... # Get the "list" array: listA = chilkat.CkJsonArray() json.ArrayOf2("list",listA) # Modify values in the list. # Change banana to plantain success = listA.SetStringAt(0,"plantain") # Change 12 to 24 success = listA.SetIntAt(1,24) # Change true to false success = listA.SetBoolAt(2,False) # Is the 3rd item null? bNull = listA.IsNullAt(3) # Change "orange" to 32. success = listA.SetIntAt(4,32) # Change 12.5 to 31.2 success = listA.SetNumberAt(5,"31.2") # Replace the { "ticker" : "AAPL" } object with { "ticker" : "GOOG" } # Do this by deleting, then inserting a new object at the same location. success = listA.DeleteAt(6) tickerObj = chilkat.CkJsonObject() listA.AddObjectAt2(6,tickerObj) success = tickerObj.AppendString("ticker","GOOG") # Replace "[ 1, 2, 3, 4, 5 ]" with "[ "apple", 22, true, null, 1080.25 ]" success = listA.DeleteAt(7) aa = chilkat.CkJsonArray() listA.AddArrayAt2(7,aa) success = aa.AddStringAt(-1,"apple") success = aa.AddIntAt(-1,22) success = aa.AddBoolAt(-1,True) success = aa.AddNullAt(-1) success = aa.AddNumberAt(-1,"1080.25") # Get the "fruit" array aFruit = chilkat.CkJsonArray() json.ArrayAt2(0,aFruit) # Get the 1st element: appleObj = chilkat.CkJsonObject() aFruit.ObjectAt2(0,appleObj) # Modify values by member name: success = appleObj.SetStringOf("fruit","fuji_apple") success = appleObj.SetIntOf("count",46) success = appleObj.SetBoolOf("fresh",False) success = appleObj.SetStringOf("extraInfo","developed by growers at the Tohoku Research Station in Fujisaki") # Modify values by index: pearObj = chilkat.CkJsonObject() aFruit.ObjectAt2(1,pearObj) success = pearObj.SetStringAt(0,"bartlett_pear") success = pearObj.SetIntAt(1,12) success = pearObj.SetBoolAt(2,False) success = pearObj.SetStringAt(3,"harvested in late August to early September") json.put_EmitCompact(False) print(json.emit()) |
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