fix invoice that had Item Price and Product Name swapped

Author: parmentelat

notebooks/exos/basic/EXO-invoice-nb.md

@@ -1,9 +1,5 @@
 ---
 jupytext:
-  cell_metadata_filter: all,-hidden,-heading_collapsed,-run_control,-trusted
-  notebook_metadata_filter: all, -jupytext.text_representation.jupytext_version, -jupytext.text_representation.format_version,
-    -language_info.version, -language_info.codemirror_mode.version, -language_info.codemirror_mode,
-    -language_info.file_extension, -language_info.mimetype, -toc
   text_representation:
     extension: .md
     format_name: myst

notebooks/exos/basic/invoice.py

@@ -16,7 +16,6 @@ def center_address(address: str) -> str:
     for line in address.split("\n"):
         if not line:
             continue
-        line = line.replace("\n", "")
         result += f"{line:^{WIDTH}}" + NL
     return result
 
@@ -28,7 +27,7 @@ def generate_invoice(items, company_address, thanks=DEFAULT_THANKS, currency='
     result += center_address(company_address)
     result += WIDTH * '+' + NL
 
-    right, middle, left = "Product Name", "#", "Item Price"
+    left, middle, right = "Product Name", "#", "Item Price"
     result += f"{left:>{LEFT}}{middle:^{MIDDLE}}{right:<{RIGHT}}" + NL
     total = 0.
     for what, unit_price, how_many in items: