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During the run time to check my class, I received an indentation error

class Category:
"""
Creates category class, possible child class of products
Parameters
­­­­­­­­­­
name : str, default blank
Desired name of category
category_type : str, default blank
type of category
model : int , default 0 
model of category in years
"""
#Declaring __init__()Function
def __init__(self,name="",category_type="",model=0):
  self.name = name
  self.category_type = category_type
  self.model = model
  print (name,"Created!") # Run when init is finished.
#Declaring print_status()Function
def print_status(self):
  print("Category :",self.name,"\n category type :"self.category_type,"\n Model :"self.model)

p1 = Category("Iphone","Technology",2020)
p1.print_status()

the error message : File "", line 13 """

^ IndentationError: expected an indented block

Faisal
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  • `def` needs to be indented inside the `class` – Moinuddin Quadri Jan 02 '21 at 20:03
  • no indentation under the class definition breaks out of the class definition, so really all your telling the interpreter is `class Category:` before breaking out...a class needs at least a `pass` to be valid..all your class methods need to be indented under the class definition (and the docstring too) – Derek Eden Jan 02 '21 at 20:44

4 Answers4

1

Just indent every line in your class (up to the line print("Category :....")).

Python should know when the class starts and when it stops. And it knows that with indentation.

Arthur Fontaine
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def print_status(self):
  print("Category :",self.name,"\n category type :"self.category_type,"\n Model :"self.model)

It seems you are missing a comma before self.Model in the above statement.

avio8
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A docstring, as its name suggests, is a string literal. Since it is not a comment, it follows the same indentation requirements as any other code in the body of the class (i.e. it must be indented).

Here's a related question with more detail: IndentationError from comment in python

Evan Schor
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Solution:

class Category:
  """
  Creates category class, possible child class of products
  Parameters
  ­­­­­­­­­­
  name : str, default blank
  Desired name of category
  category_type : str, default blank
  type of category
  model : int , default 0
  model of category in years
  """
  #Declaring __init__()Function
  def __init__(self,name="",category_type="",model=0):
    self.name = name
    self.category_type = category_type
    self.model = model
    print (name,"Created!") # Run when init is finished.
  #Declaring print_status()Function
  def print_status(self):
    print("Category :",self.name,"\n category type :", self.category_type,"\n Model :", self.model)

Discussion:

The def statements need to be indented relative to the class statement, just as the body of the defs are indented relative to the first line of the defs.

Independently, your print statement in the last line of your class contains syntax errors. I fixed them by inserting commas between arguments of print. Now, while I can vouch that my changes make your class free of syntax errors, I can't guarantee that it prints what you want it to print. I suggest that you test that.

Thomas Blankenhorn
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