code: def make_basic_chart(alt):
      data = pd.DataFrame(
          {
              "a": ["A", "B", "C", "D", "E", "F", "G", "H", "I"],
              "b": [28, 55, 43, 91, 81, 53, 19, 87, 52],
          }
      )
  
      return alt.Chart(data).mark_bar().encode(x="a", y="b")
  
file_path: altair/tests/vegalite/test_common.py
imports: import pytest
  import pandas
  from altair.vegalite import v5
label_desc: Use image node_id 3 for calling a global function with example usage: make_basic_chart(alt) and returns: alt