Create a List of Dictionaries from a Text File-CodePudding

I have a text file that contains hostnames of devices:

fc-acc-v-a-1
fc-cor-r-a-1
fc-agg-r1

I need to create a list of dictionaries from the text file that would look like this:

[{'hostname': 'fc-acc-v-a-1', 'platform': ''},
 {'hostname': 'fc-cor-r-a-1', 'platform': ''},
 {'hostname': 'fc-agg-r1', 'platform': ''}]

So far this is what I have for the code:

with open("Devices.txt", "r") as devices:
    keys = ["hostname", "platform"]
    hosts = devices.read().splitlines()
    device_dict = [dict(zip(keys, values)) for values in hosts]

print(device_dict)

However this isn't doing what I want it to do. Here's a sample of the output:

[{'hostname': 'f', 'platform': 'c'},
 {'hostname': 'f', 'platform': 'c'},
 {'hostname': 'f', 'platform': 'c'}]

I need it to assign each line in the text file as the value for the key hostname, and the value for platform can be blank for now. I plan to create functions using PySNMP to get the sysDescr OID from each hostname and that will become the platform key value for each device.

CodePudding user response：

The platform doesn't come from the file, you should just hard-code it as an empty string. There's no need to use zip() since you don't have a list of keys and values.

device_list = [{'hostname': host, 'platform': ''} for host in hosts]