basic.ipynb::cell 2 (code).Ledger.__init__ (29-30)
basic.ipynb (7-64)
- cell 1 (markdown) in-cell 1-3 at 7-9 @7
- cell 2 (code) in-cell 1-16 at 18-33 @18
  - import statements @18
  - total (amounts) @21 # Sum of the amounts.
  - Ledger @26 # Rows of (region, amount).
    - __init__ (self, rows) @29
       29 |     "    def __init__(self, rows):\n",
       30 |     "        self.rows = rows\n",
    - mean (self) @32
- cell 3 (raw) in-cell 1-1 at 40-40 @40
- cell 4 (code) in-cell 1-16 at 49-64 @49
[exit 0]
