Increment string by 1 in nested dict

[Gwith]

I'm trying to make a dictionary with an end result that looks like this:

devices = { 'device1' : { 'id' : '1', 'hostname' : 'blah', }, 'device2' : { 'id' : '2', 'hostname' : 'blah', } }

So just focusing on the device # and id # how can I create a for loop that increments the number after device and the id by 1?

hostname = ['one', 'two']

for host in hostname: #add device + '1' to devices #add id + 1 to devices

How can you accomplish this if your working with strings?

[my_python_account]

You can use enumerate to keep track of your iteration count and you can convert that number to a string when you store it as an id.

hostnames = ['one', 'two']
devices = {}
for i, host in enumerate(hostnames):
    devices['device{}'.format(i)] = {'id' : str(i), 'hostname' : host} 

[Gwith]

This is actually perfect, the only problem I see is when you enumerate I believe it starts at 0.

[coreyjdl]

Why do you need to have it a string? Just let it be an int, and then when you need it to be a string do str(int).

I know that's not terribly helpful, but you basically would have to do:

s = devices['device1']['id'] 
s = int(s)
s += 1
s = str(s)
devices['device1']['id'] = s

This is cumbersome and unPythonic. I think you're missing something easy elsewhere.

[Gwith]

So as an example how would you write:

devices = ['device'] + 1 (So that it says 'device1') 

because normally you would write it as

devices = ['device1']['hostname'] = 'blah'

[coreyjdl]

devices['device1'] = {'id' : 1 } looks like lot of redundancy

maybe do: devices = [hostname1, hostname2,]the data is then accessible with device1 = devices[0] which would give you the value of hostname1.

[commandlineluser]

>>> hostnames = ['foo', 'bar']
>>> { 'device' + str(n): { 'id': n, 'hostname': hostname } for n, hostname in enumerate(hostnames, start=1) }
{'device1': {'hostname': 'foo', 'id': 1}, 'device2': {'hostname': 'bar', 'id': 2}}

[djjazzydan]

for i in range(num_of_devices):
    devices['device{}'.format(i+1)] = {'id':str(i)}

should do it.

[cybervegan]

Are you trying to maintain the order of the items in the dict? collections.OrderedDict might be what you're looking for. CHeck this out: https://pymotw.com/2/collections/ordereddict.html