Return the first index of a given value.
Uses numerically tolerant equality where appropriate.
Parameters : |
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Returns : | out : int |
Raises : |
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Examples
>>> s
[1, 2, 3, 2, 4, 2]
>>> s.index(1)
1
>>> s.index(2, 2)
3
>>> s.index(2, start=2, stop=5)
3
>>> s.index(6)
ValueError: CfList doesn't contain: 6