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Pythonでプログラムからの相対パスでファイルを読み込む

Last updated at Posted at 2020-02-29

実行ファイルのパスは__file__で取得できるので、os.path.dirnameを使ってディレクトリにし、
os.path.joinを使って欲しいファイルへのパスをつなげるとOK.

.
└── some_dir
    ├── products.json
    └── test.py

test.py
import os
dirname = os.path.dirname(__file__)
filename = os.path.join(dirname, 'products.json')
with open(filename) as f:
    print(f.read())
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