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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 find_in_path(path, file):
 """Find a file in a given path string."""

  for p in path.split(os.pathsep):
    candidate = os.path.join(p, file)
    if os.path.exists(candidate) and os.path.isfile(candidate):
      return candidate
  return False