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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def compile_classpath(self, classpath_product_key, target, extra_cp_entries=None):
 """Compute the compile classpath for the given target."""


    classpath_entries = list(
      entry.path
        for entry in self.compile_classpath_entries(classpath_product_key, target, extra_cp_entries)
    )

    # Verify that all classpath entries are under the build root.
    for entry in classpath_entries:
      assert entry.startswith(get_buildroot()), \
             "Classpath entry does not start with buildroot: {}".format(entry)

    return classpath_entries