feat: Add prefix argument to generate_temporary_column_name
#3147
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FBruzzesi
changed the title
prefix argument to generate_temporary_column_name
FBruzzesi
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Sep 21, 2025
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| # Prepend `'nw'` to ensure it always starts with a character | ||
| # https://github.com/narwhals-dev/narwhals/issues/2510 | ||
| token = f"nw{token_hex(n_bytes - 1)}" | ||
| token = f"{prefix}{token_hex(n_bytes - 1)}" |
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Should we ensure that prefix is not an empty string?
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Added explicit prefix only on lazy backends operations since these are the ones that a user might be able to investigate in various way. Not really applicable in the eager case