class_docstr: PEP 235 dictates that on case-preserving, case-insensitive file systems
  that imports are case-sensitive unless the PYTHONCASEOK environment
  variable is set.
docstr: Look for a module with matching and non-matching sensitivity.
docstr_tok: ["Look","for","a","module","with","matching","and","non-matching","sensitivity","."]
code: def sensitivity_test(self):
      """Look for a module with matching and non-matching sensitivity."""
      sensitive_pkg = "sensitive.{0}".format(self.name)
      insensitive_pkg = "insensitive.{0}".format(self.name.lower())
      context = util.create_modules(insensitive_pkg, sensitive_pkg)
      with context as mapping:
          sensitive_path = os.path.join(mapping[".root"], "sensitive")
          insensitive_path = os.path.join(
              mapping[".root"], "insensitive"
          )
          sensitive_finder = self.finder(sensitive_path)
          insensitive_finder = self.finder(insensitive_path)
          return self.find(sensitive_finder), self.find(
              insensitive_finder
          )
  
file_path: cpython/Lib/test/test_importlib/source/test_case_sensitivity.py
imports: import sys
  from test.test_importlib import util
  import os
  from test.support import os_helper
  import unittest
label_desc: Use image node_id 2 for calling the CaseSensitivityTest obj's underlying member method code with example usage: obj.sensitivity_test() and returns: self,  self