Creating a flask API that deals with various nested JSON files presents an interesting challenge. Depending on the data within these files, different actions need to be taken.
The sorting logic is based on conditional statements as shown below:
if (jsonFile['data']['shape'] == "cube"):
function(jsonFile)
elif (jsonFile['data']['shape'] == "cone"):
function(jsonFile)
elif (jsonFile['data']['sphere']):
function(jsonFile)
else:
print("Unknown file")
However, when attempting to send a nested JSON file through Postman, like one containing information about a sphere, a
500 error "KeyError: shape"If I rearrange the order of the elif statements so the one referring to the sphere comes first, only the sphere-related operations work while the others do not. The logic seems to stop at the initial if statement, causing subsequent conditions to be ignored. Even sending random content does not trigger the else statement.
All other statements function correctly on their own.
Example of a JSON file featuring a cube:
{
"data": {
"shape": "cube"
}
}
Example of a JSON file featuring a sphere:
{
"data": {
"sphere": {
"description": "spherical"
}
}
}
The complete error message is as follows:
ERROR in app: Exception on /processshape [POST]
Traceback (most recent call last):
File "C:\Users\user1\AppData\Local\Programs\Python\Python310\lib\site-packages\flask\app.py", line 2525, in wsgi_app
response = self.full_dispatch_request()
File "C:\Users\user1\AppData\Local\Programs\Python\Python310\lib\site-packages\flask\app.py", line 1822, in full_dispatch_request
rv = self.handle_user_exception(e)
File "C:\Users\user1\AppData\Local\Programs\Python\Python310\lib\site-packages\flask\app.py", line 1796, in dispatch_request
return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)
File "d:\python\shape-api\app.py", line 34, in processshape
if (resp['data']['shape'] == "cube"):
KeyError: 'shape'
127.0.0.1 - - [02/Feb/2023 00:03:38] "POST /processshape HTTP/1.1" 500 -