code: def test_ecdf():
      p = ggplot(data, aes("x")) + stat_ecdf(size=2)
  
      assert p == "ecdf"
  
imports: import pandas
  from plotnine import aes, after_stat, ggplot, stat_ecdf
label_desc: Use image node_id 1 for calling a global function with example usage: test_ecdf() without return types