Other than conditionals, what function/method to use to return an object that meets certain criteria in a list?
Question:
#COMPLETE BEGINNER
I’m trying to create a custom function in a class that offers a choice from a list based on 2 criteria. Due to my very limited knowledge, I can’t think of anything other than conditionals.
I want the function to return obj2 from objcollection in this case (criteria: c= "m" and d= "n")
class Blah:
def __init__(self, a, b, c, d):
self.a = a
self.b = b
self.c = c
self.d = d
obj1 = Blah("x", "t", "z", "f")
obj2 = Blah("g", "w", "m", "n")
objcollection = [obj1, obj2]
Answers:
Since you want to return an object based on a condition, using a conditional (e.g. an if) is definitely the right thing.
def select_cm_dn(objs):
return next(o for o in objs if o.c == "m" and o.d == "n")
assert select_cm_dn(objcollection) == obj2
#COMPLETE BEGINNER
I’m trying to create a custom function in a class that offers a choice from a list based on 2 criteria. Due to my very limited knowledge, I can’t think of anything other than conditionals.
I want the function to return obj2 from objcollection in this case (criteria: c= "m" and d= "n")
class Blah:
def __init__(self, a, b, c, d):
self.a = a
self.b = b
self.c = c
self.d = d
obj1 = Blah("x", "t", "z", "f")
obj2 = Blah("g", "w", "m", "n")
objcollection = [obj1, obj2]
Since you want to return an object based on a condition, using a conditional (e.g. an if) is definitely the right thing.
def select_cm_dn(objs):
return next(o for o in objs if o.c == "m" and o.d == "n")
assert select_cm_dn(objcollection) == obj2