Created
March 9, 2019 08:20
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Less copies in Python with the buffer protocol and memoryviews
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| # Snippet #2 | |
| f = open(FILENAME, 'rb') | |
| data = bytearray(f.read()) | |
| data[0] = 97 # OK! | |
| # Snippet #3 | |
| f = open(FILENAME, 'rb') | |
| data = bytearray(os.path.getsize(FILENAME)) | |
| f.readinto(data) # The result: this code runs ~30% faster than snippet #2 |
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