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Given the following text description, write Python code to implement the functionality described below step by step
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Description:
 Hello world
In this unit you will learn how to use Python to implement the first ever program
that every programmer starts with.
Introduction
Here is the traditional first programming exercise, called "Hello world".
The task is to print the message
Step1:  Exercise
Now it is your turn. Please create a program in the next cell that would print a message "Hello, world"
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Python Code:
print("hello")
print("bye bye")
print("hey", "you")
print("one")
print("two")
Explanation: Hello world
In this unit you will learn how to use Python to implement the first ever program
that every programmer starts with.
Introduction
Here is the traditional first programming exercise, called "Hello world".
The task is to print the message: "Hello, world".
Here are a few examples to get you started. Run the following cells and see how
you can print a message. To run a cell, click with mouse inside a cell, then
press Ctrl+Enter to execute it. If you want to execute a few cells sequentially,
then press Shift+Enter instead, and the focus will be automatically moved
to the next cell as soon as one cell finishes execution.
End of explanation
def hello(x):
  print("Hello, " + x)
Explanation: Exercise
Now it is your turn. Please create a program in the next cell that would print a message "Hello, world":
End of explanation
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