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Created on 2019-10-28 11:08 by PrometheusPi, last changed 2022-04-11 14:59 by admin. This issue is now closed.
| Messages (3) | |||
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| msg355525 - (view) | Author: Richard Pausch (PrometheusPi) | Date: 2019-10-28 11:07 | |
The issue was first reported in https://github.com/ipython/ipython/issues/11918. Some non-ascii characters like φ (\u03c6) and ϕ (\u03d5) map/link to the same data/identifier. ```python ϕ = 1 φ = 2 print(ϕ) # results in 2 - should be 1 print(φ) # results in 2 ``` It has so far been shown to occur both in python 3.6 and 3.7. |
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| msg355539 - (view) | Author: Steven D'Aprano (steven.daprano) *  |
Date: 2019-10-28 13:21 | |
This is an intentional feature: identifiers are normalised using NFKC normalization.
py> from dis import dis
py> dis(compile('ϕ=1', '', 'single'))
1 0 LOAD_CONST 0 (1)
3 STORE_NAME 0 (φ)
6 LOAD_CONST 1 (None)
9 RETURN_VALUE
py> from unicodedata import normalize
py> normalize('NFKC', 'ϕ')
'φ'
So not a bug.
|
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| msg355540 - (view) | Author: Steven D'Aprano (steven.daprano) * |
Date: 2019-10-28 13:23 | |
Its also documented here: https://docs.python.org/3/reference/lexical_analysis.html#identifiers |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:59:22 | admin | set | github: 82793 |
| 2019-10-28 13:23:12 | steven.daprano | set | status: open -> closed resolution: not a bug messages: + msg355540 stage: resolved |
| 2019-10-28 13:21:05 | steven.daprano | set | nosy:
+ steven.daprano messages: + msg355539 |
| 2019-10-28 13:04:25 | PrometheusPi | set | nosy:
+ ezio.melotti, vstinner components: + Unicode |
| 2019-10-28 11:08:00 | PrometheusPi | create | |