Intro to List Comprehensions and Decorators
Listen (optional): Debugging with PySnooper
What is the basic syntax of Python list comprehension, and how does it differ from using a for loop to create a list? Provide an example of a list comprehension that squares the elements in a given list of integers.
Basic Syntax for Python List Comprehension:
[ *expression* for *item* in *list* ]It is functionally similar to a simple for loop, but uses fewer lines of code. An example of a list comprehension that squares the elements in a given list of integers would be:square_list = [ int*int for int in integer_list ]
What is a decorator in Python?
A notation
@example_decorator_funcplaced above a function to indicate that a decorator function is being called and the function beneath it is being passed as a parameter.
Explain the concept of decorators in Python. How do they work, and what are some common use cases for them? Provide an example of a simple decorator function from the reading.
Decorator functions modify other functions so when the orignal function is called later, it will behave as instructed by the decorator function. An example from the reading:
```from decorators import do_twice
@do_twice def say_whee(): print(“Whee!”)
say_whee() Whee! Whee! ```
*Thus far print() doesn’t feel as user-friendly as console.log(). I would like to find time to learn how to use PySnooper or another debugger.