diff options
Diffstat (limited to 'python.html.markdown')
| -rw-r--r-- | python.html.markdown | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/python.html.markdown b/python.html.markdown index 25798ade..27b2b22a 100644 --- a/python.html.markdown +++ b/python.html.markdown @@ -132,7 +132,7 @@ b == a # => True, a's and b's objects are equal "Hello " "world!" # => "Hello world!" # A string can be treated like a list of characters -"This is a string"[0] # => 'T' +"Hello world!"[0] # => 'H' # You can find the length of a string len("This is a string") # => 16 @@ -186,7 +186,7 @@ some_unknown_var # Raises a NameError # if can be used as an expression # Equivalent of C's '?:' ternary operator -"yahoo!" if 3 > 2 else 2 # => "yahoo!" +"yay!" if 0 > 1 else "nay!" # => "nay!" # Lists store sequences li = [] @@ -772,11 +772,11 @@ if __name__ == '__main__': # Call the static method print(Human.grunt()) # => "*grunt*" - - # Cannot call static method with instance of object + + # Cannot call static method with instance of object # because i.grunt() will automatically put "self" (the object i) as an argument print(i.grunt()) # => TypeError: grunt() takes 0 positional arguments but 1 was given - + # Update the property for this instance i.age = 42 # Get the property @@ -792,7 +792,7 @@ if __name__ == '__main__': #################################################### # Inheritance allows new child classes to be defined that inherit methods and -# variables from their parent class. +# variables from their parent class. # Using the Human class defined above as the base or parent class, we can # define a child class, Superhero, which inherits the class variables like @@ -926,7 +926,7 @@ class Batman(Superhero, Bat): # So instead we explicitly call __init__ for all ancestors. # The use of *args and **kwargs allows for a clean way to pass arguments, # with each parent "peeling a layer of the onion". - Superhero.__init__(self, 'anonymous', movie=True, + Superhero.__init__(self, 'anonymous', movie=True, superpowers=['Wealthy'], *args, **kwargs) Bat.__init__(self, *args, can_fly=False, **kwargs) # override the value for the name attribute @@ -941,9 +941,9 @@ if __name__ == '__main__': # Get the Method Resolution search Order used by both getattr() and super(). # This attribute is dynamic and can be updated - print(Batman.__mro__) # => (<class '__main__.Batman'>, - # => <class 'superhero.Superhero'>, - # => <class 'human.Human'>, + print(Batman.__mro__) # => (<class '__main__.Batman'>, + # => <class 'superhero.Superhero'>, + # => <class 'human.Human'>, # => <class 'bat.Bat'>, <class 'object'>) # Calls parent method but uses its own class attribute |