CODEWITHSUNDEEP
pythonfunctiondictionaryvariables
user8589954
user8589954

Reputation:

using vars() [] in a function not working

I am generating variables through a list and a class. All that works fine. outside a function i can call the data one of these variables hold, but inside a function i can call the data directly, but not using the vars()[] method

I have tried to search for a direct answer on google and this site, but i have been unable to find a solution.

what can i do to make the:

print(str(k)+" :"+str(vars()[k].data))

inside runner() work?

class LED:
    def __init__(self, gpio):
        self.gpio = gpio
        self.data = []
        self.state = False


LED_list = {'G1':8}

for k,v in LED_list.items():
    vars()[k] = LED(v)

G1.data = [10,15,20,25]

print("outside")
for k,v in LED_list.items():
    print(str(k)+" :"+str(vars()[k].data))

def runner():
    print("inside")
    for k,v in LED_list.items():
        print(k,v)
        print("G1 data: "+str(G1.data))
        print(str(k)+" :"+str(vars()[k].data))

runner()

This is my output:

outside
G1 :[10, 15, 20, 25]
inside
G1 8
G1 data: [10, 15, 20, 25]
Traceback (most recent call last):
  File "/.../Main2.py", line 23, in <module>
    runner()
  File "/.../Main2.py", line 21, in runner
    print(str(k)+" :"+str(vars()[k].data))
KeyError: 'G1'

Upvotes: 1

Views: 873

Answers (1)

user8589954
user8589954

Reputation:

globals() works instead of vars() - but read the notes under, because it is not the correct solution to the problem to use vars() and globals().


class LED:
    def __init__(self, gpio):
        self.gpio = gpio
        self.data = []
        self.state = False


LED_list = {'G1':8}

for k,v in LED_list.items():
    vars()[k] = LED(v)

G1.data = [10,15,20,25]

print("outside")
for k,v in LED_list.items():
    print(str(k)+" :"+str(vars()[k].data))

def runner():
    print("inside")
    for k,v in LED_list.items():
        print(k,v)
        print("G1 data: "+str(G1.data))
        print(str(k)+" :"+str(globals()[k].data))

runner()

Upvotes: 1

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