Python list attribute error

Question

I have a file called con.dat. I want to read the content of this file to search for a pattern. If the pattern is found, it then prints the message to the console.

con.dat

- file: /app.log
  pattern: "ERROR"
  message: "Error in App"

I get the following error: AttributeError: 'list' object has no attribute 'keys'

my test.py code is as follows:

import yaml
import re

with open("con.dat","r") as f:
    triggers = yaml.load(f)

for filename in triggers.keys():
    with open(filename,"r") as f:
        for line in f:
            trigger_info = triggers(filename)
            if re.search(trigger_info["pattern"],line):
                print("match found in line{0} for pattern{1}")
                format(line,trigger_info["pattern"])

I know my error related to triggers.keys(): but I am not sure the issue. I am new to python. Can someone guide me on how I should correct this error?

btw - my app.log file does contain a line with 'ERROR: blah blah blah' for testing

triggers.keys(): it seems that triggers is not a dictionary but a list. Lists, do not have the keys() attribute. — Ma0
– Ma0, Commented Nov 24, 2017 at 12:34
changing line to for filename in triggers: causes a TypeError: expected str, bytes or... — DaveMac001
– DaveMac001, Commented Nov 24, 2017 at 12:43

Alberto Re · Accepted Answer · 2017-11-24 13:03:30Z

2

Try this way, 'triggers' is a list of dictionaries:

import yaml
import re

with open("con.dat","r") as f:
    triggers = yaml.load(f)

for entry in triggers:
    with open(entry["file"], "r") as f:
        for line in f:
            if re.search(entry["pattern"], line):
                print("match found")

answered Nov 24, 2017 at 13:03

Alberto Re

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Comments

DaveMac001 · Accepted Answer · 2017-11-24 12:53:50Z

0

triggers.keys(): it seems that triggers is not a dictionary but a list. Lists, do not have the keys() attribute.

answered Nov 24, 2017 at 12:53

DaveMac001

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