`tqdm.contrib.discord` 和 `telegram` 会用 `UnboundLocalError` 来掩盖连接错误

• I have marked all applicable categories:
  • exception-raising bug
  • visual output bug
• I have visited the [source website], and in particular read the [known issues]
• I have searched through the [issue tracker] for duplicates
• I have mentioned version numbers, operating system and environment, where applicable:
  python复制

  import tqdm, sys
  print(tqdm.__version__, sys.version, sys.platform)

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