On 2018-04-04 00:34, Ethan Furman wrote:
This behavior was recently brought to my attention [1]:
--> 1 in 'hello'
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: 'in <string>' requires string as left operand, not int
However, in any other collection (set, dict, list, tuple, etc), the answer
would be False.
Does anyone remember the reason why an exception is raised in the string
instance instead of returning False?
Well, strings aren't really a collection like set, etc, which can
contain various types, even a mixture of types.
A string can contain only strings (including codepoints).
A bytestring can contain only bytestrings and ints (and there's been
debate on whether the latter was a good idea!).
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