code: def get_file(self, path):
      if path not in self.files:
          self.files[path] = SourceFile(path)
          if self.prefix is None:
              self.prefix = path
          else:
              self.prefix = os.path.commonprefix([self.prefix, path])
      return self.files[path]
  
file_path: numpy/tools/c_coverage/c_coverage_report.py
imports: import os
  import re
  import sys
  from xml.sax.saxutils import quoteattr, escape
label_desc: Use image node_id 2 for calling the SourceFiles obj's underlying member method code with example usage: obj.get_file(path) and returns: self