What will be the output? ```python price = 1 # price = 10 print(price) ```

First Steps

Comments in Python

Learn about comments in Python and how to use them to structure and describe our code.

Let's talk about comments in your code.

A very important aspect of programming is documenting what you are doing.

In Python, you can add comments to your code to make it more understandable.

You can add a comment using the # symbol.

# this is a comment
print(10)

Python

Everything after the # symbol is ignored when we run our code.

The following code will throw an error because num is not really created:

# num = 10
print(num)

Python

Output

What will be the output?

price = 1
# price = 10
print(price)

Python

You can even add comments at the end of an existing code line. This is called an inline comment:

print(num) # I am an inline comment

Python

Using comments, we can structure our code and make it very clear what our program is doing. Here's an example:

# 1. Declare variables:
price = 10 # the price of our product
quantity = 5 # the ordered quantity
 
# 2. Updating variable values:
quantity = 10 # the customer has doubled the order
 
# 3. Printing the values:
print(price)
print(quantity)

Python