Hi, I am new to this forum. I hope I get some help with my problem.
I am facing a problem updating the instance age.
I have highlighted the problem in the image.
I would really appreciate any suggestions.
Thank you
Hello, @sangam. I made some changes at your code and hope those changes will help you:
from datetime import date
class Migration:
humanInstances = []#Dicts destroy-I mean, cut off- repeating keys(and those keys' values). So,I think, using a list is better than using a dict -which uses names as
#keys- because names may repeat.
human_population = 100
current_year = date.today().year
addyears = 0
def __init__(self,name,gender,age):
self.name = name
self.lifephase = "Not Available"
self.age = age
self.gender = gender
Migration.human_population += 1
Migration.humanInstances.append(self)#This will add your human to humanInstances list.
@classmethod
def time_passedby(Migration,years):
Migration.current_year += years
Migration.addyears = years
#This for loop will update your instances' ages and lifephases:
for human in Migration.humanInstances:
human.age += years
human.lifephase = human.lifePhase()
def lifePhase(self):
#bla bla
#bla bla
Note: Please share your code as text in your future posts. You can use the </> button in your editor, or you can easily create the formation below:
```
Your code goes here
```
2 Likes
I am mildly concerned this code calls the ‘lifephase’ after 100 years ‘terminated’ 
A good point.
Computer science is too dangerous nowadays…
Thanks, Toprak. I really, appreciated the solution. 
1 Like