dict rule match - this code essentially takes in a bunch of rules and compares them against an event (dict) and prints if something matches

rulematch.py

# requires dictquery (pip3 install dictquery or get it from here: https://github.com/cyberlis/dictquery)
import dictquery as dq

#each rule needs to be a new line
#rule format, RULENAME|RULE
#rule syntax: https://github.com/cyberlis/dictquery#dictquery
rules_file = "rules.txt" 

rules = {}

def loadrules(rules_file):
    global rules
    with open(rules_file) as f:
        for line in f:
            rule = line.strip().split("|",1)
            rules[rule[0]] = dq.compile(rule[1]) #this may need some modification, check dictquery docs
        
def checkevent(event):
    global rules
    for rule in rules:
        if rules[rule].match(event):
            alert(rule,event)

def alert(rule, event):
    match = {"rule": rule, "event":event}
    print(match)
    
loadrules(rules_file)

event = {"name":"John", "age":35}

checkevent(event)

rules.txt

name is john|name=="John"
age more than 30|age > 30

dictquery alternative https://github.com/zeroSteiner/rule-engine