python help

Question

need help writing this code in python please: I keep getting it incorrect.

 

Write the definition of a class Counter containing:
An instance variable named counter of type int
An instance variable named limit of type int.
A constructor that takes two int arguments and assigns the first one to counter and the second one to limit
A method named increment. It does not take parameters or return a value; if the instance variable counter is less than limit, increment just adds one to the instance variable counter.
A method named decrement. It also does not take parameters or return a value; if counter is greater than zero, it just subtracts one from the counter.
A method named get_value that returns the value of the instance variable counter.

Answer 1

# Start the class definition.
class Counter:
# Constructor (initialization method) definition.
     def __init__(self, c=0, l=-1):
         # Assign variables, passed into constructor, to
         # instance variables:
         self.counter = c
         self.limit = l

     # Note: 'self' reference is required for all methods.
     def increment(self):
         # BTW I'm just typing the Python equivalent to each
         # line of your question...
         if (self.counter < self.limit or self.limit == -1):
             self.counter += 1

     def decrement(self):
         if (self.counter > 0): self.counter -= 1

     def get_value(self):
         return self.counter

##  Notice that the __init__ method arguments default to 0 and
##  -1, respectively, if they are not provided during class
##  instantiation. Which effectively gives the counter a
##  value of zero and sets an infinite limit, by default.
##  (Note: the 'or' inside of the 'if' condition allows '-1'
##  to represent 'no limit'.)
##
##  You can run the following to check/test it out:

count = Counter()
count.counter
count.limit

count.increment()
count.get_value()

count.decrement()
count.get_value()

count2 = Counter(2, 4)
count2.counter
count2.limit

count2.increment()
count2.increment()
count2.increment()
count2.increment()
count2.get_value()

count2.decrement()
count2.decrement()
count2.decrement()
count2.decrement()
count2.decrement()
count2.get_value()

##  See: https://docs.python.org/3.5/tutorial/classes.html
##  and
##  >>> help('class')
##  >>> help('def')
##
##  ~ veganaiZe ~