Checking if an environment variable exists and is set to True [closed]

Question

So, I want to check and verify if a given variable "abc" exists and that it's true. If the variable exist and is False, then I want it to go to else. Here is how I got it to work in python:

env = os.environ.copy()
if "abc" in env and env['abc'] == "True":
    print "Works"
else:
    print "Doesn't work"

Is there a better way to do it?

Answer 1

You can check to see if the variable is in the dictionaries returned by globals() and locals(). (Thank you to Aaron for reminding me to add the full code)

For a local variable:

if locals().get('abc'):
    print(abc)

For a global variable:

if globals().get('abc'):
    print(abc)

For an environment variable:

if os.environ.get('abc')=='True':
    #abc is set to True

More information here:

https://docs.python.org/3/library/functions.html#locals https://docs.python.org/3/library/functions.html#globals

Answer 2

You can use:

env.get("abc", False)

False is the default value if "abc" is not in env.