code: def get_paths(level=15):
      """
      Generates a set of paths for testfiles searching.
  
      Examples
      ========
  
      >>> get_paths(2)
      ['sympy/test_*.py', 'sympy/*/test_*.py', 'sympy/*/*/test_*.py']
      >>> get_paths(6)
      ['sympy/test_*.py', 'sympy/*/test_*.py', 'sympy/*/*/test_*.py',
      'sympy/*/*/*/test_*.py', 'sympy/*/*/*/*/test_*.py',
      'sympy/*/*/*/*/*/test_*.py', 'sympy/*/*/*/*/*/*/test_*.py']
  
      """
      wildcards = ["/"]
      for i in range(level):
          wildcards.append(wildcards[-1] + "*/")
      p = ["sympy" + x + "test_*.py" for x in wildcards]
      return p
  
imports: from __future__ import print_function
  from glob import glob
label_desc: Use image node_id 1 for calling a global function with example usage: get_paths(level) and returns: p