Asked By – Eyelash
If I have a construct like this:
def foo(): a=None b=None c=None #...loop over a config file or command line options... if a is not None and b is not None and c is not None: doSomething(a,b,c) else: print "A config parameter is missing..."
What is the preferred syntax in python to check if all variables are set to useful values? Is it as I have written, or another better way?
This is different from this question:
not None test in Python … I am looking for the preferred method for checking if many conditions are not None. The option I have typed seems very long and non-pythonic.
Now we will see solution for issue: What is the most pythonic way to check if multiple variables are not None?
There’s nothing wrong with the way you’re doing it.
If you have a lot of variables, you could put them in a list and use
if all(v is not None for v in [A, B, C, D, E]):