code: def test_east_asian_len(self):
      adj = printing._EastAsianTextAdjustment()
  
      assert adj.len("abc") == 3
      assert adj.len("abc") == 3
  
      assert adj.len("パンダ") == 6
      assert adj.len("ﾊﾟﾝﾀﾞ") == 5
      assert adj.len("パンダpanda") == 11
      assert adj.len("ﾊﾟﾝﾀﾞpanda") == 10
  
file_path: pandas/pandas/tests/io/formats/test_printing.py
imports: import string
  import pandas._config.config
  from pandas.io.formats import printing
label_desc: Use image node_id 4 for calling the TestFormatBase obj's underlying member method code with example usage: obj.test_east_asian_len() without return types