pep-8 エラー対応

comparison to None should be 'if cond is not None:

code:memo.py

tags = list(filter(lambda x: x != None and x.text != "\n", data))

# ^^

# ↓

tags = list(filter(lambda x: x is not None and x.text != "\n", data))

# ^^^^^^

確認用

Q. pep-8 エラー対応

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