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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 GeneratePassphrase(length=20):
 """Create a 20 char passphrase with easily typeable chars."""

  valid_chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
  valid_chars += "0123456789 ,-_&$#"
  return "".join(random.choice(valid_chars) for i in range(length))