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TypeError: Can't mix strings and bytes in path components

Python

Last updated at 2020-02-03Posted at 2020-02-03

問題

with open('LICENSE.txt', 'rb') as f:
  s = [os.path.join('a', line.strip()) for line in f]

# error
# TypeError: Can't mix strings and bytes in path components

解決

with open('LICENSE.txt', 'rb') as f:
  s = [os.path.join(b'a', line.strip()) for line in f]

原因

バイト列とstrを混同させていた。バイト列にそろえた。

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