chore: clean up code lines

docs/tutorials/browser/repl.qmd

@@ -17,10 +17,13 @@ from urllib.parse import urlencode
 
 lines = """
 %pip install numpy pandas tzdata
-import pyodide_js, pathlib, js
-await pyodide_js.loadPackage("https://storage.googleapis.com/ibis-wasm-wheels/pyarrow-17.0.0-cp312-cp312-pyodide_2024_0_wasm32.whl")
-pathlib.Path("penguins.csv").write_text(await (await js.fetch("https://storage.googleapis.com/ibis-tutorial-data/penguins.csv")).text())
-del pyodide_js, pathlib, js
+import pyodide_js, pathlib
+pyarrow_wheel_url = "https://storage.googleapis.com/ibis-wasm-wheels/pyarrow-17.0.0-cp312-cp312-pyodide_2024_0_wasm32.whl"
+await pyodide_js.loadPackage(pyarrow_wheel_url)
+penguins_url = "https://storage.googleapis.com/ibis-tutorial-data/penguins.csv"
+penguins_text = await (await js.fetch(penguins_url)).text()
+pathlib.Path("penguins.csv").write_text(penguins_text)
+del pyarrow_wheel_url, penguins_text, penguins_url, pyodide_js, pathlib
 %clear
 %pip install 'ibis-framework[duckdb]'
 from ibis.interactive import *