Issue with REST API call from Python to Azure

Question

I am using an HTML form to take in parameters to use for Azure REST API calls.

My Code

@app.route('/storageaccountcreate', methods = ['POST', 'PUT'])
def storageaccountcreate():
    name = request.form['storageaccountname']
    resourcegroup = request.form['resourcegroup']
    subscriptionId = request.form['subscriptionId']
    location = request.form['location']
    sku = request.form['sku']
    keys = [name, resourcegroup, subscriptionId, location, sku]
    api_json = {keys: request.form[key] for key in keys}
    url = 'https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Storage/storageAccounts/{accountName}?api-version=2019-06-01'
    r = requests.put((url),data=(api_json))
    print(r.text)
    return r.text

I am getting the following error when trying to use this code

Bad Request
The browser (or proxy) sent a request that this server could not understand.

Also the debugging in VSC is showing the following

Photo of error

If you have any info that would help I would greatly appreciate it!

I'm not sure lol that is why I'm asking. I didn't think it should be an f-string as i've not seen any examples with it as an f-string but I'm not sure. If it was a string then I would be curious how it would know where it input the variables into the url. — Kyle Monteagudo
– Kyle Monteagudo, Commented Apr 7, 2020 at 21:59
Well what do you expect {subscriptionId} to do in that string? — Chris
– Chris, Commented Apr 7, 2020 at 22:00
The issue that it is showing in debugging is something with this part api_json = {keys: request.form[key] for key in keys} — Kyle Monteagudo
– Kyle Monteagudo, Commented Apr 7, 2020 at 22:00
I would think that subscriptionId in that string would be sticking the subscriptionId variable there. or the key=value — Kyle Monteagudo
– Kyle Monteagudo, Commented Apr 7, 2020 at 22:01

Chris · Accepted Answer · 2020-04-07 22:37:48Z

2

Python doesn't interpolate values in regular strings:

url = 'https://management.azure.com/subscriptions/{subscriptionId}/...'
#                                                 ^^^^^^^^^^^^^^^^

Assuming you're using Python 3.6 or later, use an f-string to enable interpolation:

url = f'https://management.azure.com/subscriptions/{subscriptionId}/...'
#     ^ here

answered Apr 7, 2020 at 22:37

Chris

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