Notes from CS169:
- The Python null value is
None. - Python is dynamically and strongly typed.
- When you want to use functions defined in imported modules, you need to include the module name:
module_name.function_name() - Comma-delimited arguments to
printin Python prints all the arguments delimited by a space. - Python does not allow in-line assignment, so there is no chance of accidentally changing the value of a variable you meant to use in a comparison.
- When a module is imported, the value of __name__ is its filename. When you execute the module directly, its value is __main__. This allows you to seamlessly embed a test suite right into your code.
- Dictionary keys must be immutable. This means that a tuple, as long as its elements are immutable, may be a key.
is a line continuation marker.- Python raises an exception if you try to reference a variable that hasn’t been assigned a value.
- To get around the strongly-typed aspect of Python, you can use string formatting using tuples.
