Class Error Comparison (dynamics vs. static)

pclass.py

import math

class Person:
  age = 5
  name = 'hi'

  def birthday(self):
    self.age += 1
    return self.age

p = Person()
print(p.age)
print(p.birthday())

# change of name
p.names = 'there'
print(p.name)

print(math.sqrt(9))
math.sqrt = lambda n: 2*n
print(math.sqrt(9))

sclass.scala

class Person:
  var age = 5
  var name = "hi"

  def birthday(): Int =
    age += 1
    age

@main def start =
  val p = Person()
  println(p.age)
  println(p.birthday())
	
  // change of name
  p.names = "there"
  println(p.name)
	
  println(math.sqrt(9))
  math.sqrt = (n: Double) => 2 * n
  println(math.sqrt(9))