python/reference/concepts/indexing.md

Indexing

TODO: ADD MORE

• the "rows" and "columns" of this exercise need to be retrieved from a list of lists via index matrix
• for iterables, individual items can be accessed with stringname[x] notation. Negative numbers start to count backwards phone-number
• finding a value by key in a dictionary using <dictionary name>[<key name>] The example uses passed in move arguments as keys to look up corresponding values (method names) for moving the robot in the instructions dictionary. robot-simulator