Python Forum

Consider the following class:

class a:
  def __init__(self,T):
    self.T=T

Now, if I set

x=a(3)
y=a(4)

we find that x.T is 4, but their pointers are different. Furthermore, if I set x.T=5, y.T remains as 4. If I again produce another variable z=a(6), we find that y.T is 6 as well, but x.T is still 5.

Is this a feature of Python or maybe it's my IDE (I'm using Spyder 3.7).

the code you show cannot produce the result you describe.

class Foo:
  def __init__(self, t):
    self.t = t


spam = Foo(3)
eggs = Foo(4)

# check values
print(f'spam.t = {spam.t}')
print(f'eggs.t = {eggs.t}')

# change value
eggs.t = 6

# check values
print('----------')
print(f'spam.t = {spam.t}')
print(f'eggs.t = {eggs.t}')


bar = Foo(7)

# check values
print('-----------')
print(f'spam.t = {spam.t}')
print(f'eggs.t = {eggs.t}')
print(f'bar.t = {bar.t}')

Output:
spam.t = 3
eggs.t = 4
----------
spam.t = 3
eggs.t = 6
-----------
spam.t = 3
eggs.t = 6
bar.t = 7

probably there is something else/different in the code you are running.