<filename>0-getting-started/coding-style.py
"""
# function, variable, attribute
lowercase_underscore

# protected instance
_leading_underscore

# private instance
__double_leading_underscore

# class, exception
CapitalizedWord

# module level constant
ALL_CAPS

# instance method of class
self

# first parameter name in class method
cls

# import order
standard library modules
third party modules
my modules


"""