On 10/19/20, Grant Edwards <[email protected]> wrote:
> On 2020-10-19, Stephen Tucker <[email protected]> wrote:
>
>> For a neatish way to get a string to end with a single backslash, how
>> about
>> mystr = r"abc\ "[:-1]
>> (Note the space at the end of the rough-quoted string.)
>
> That's the first thing I thought of, though I would probably use a
> non-space character to avoid convusion when reading:
>
> mystr = r'abc\_'[:-1]
But it doesn't actually "end a raw string with a single backslash".
The compiler could be optimized for slicing string literals, but it's
not. For example:
>>> dis.dis(r"r'spam\eggs\_'[:-1]")
1 0 LOAD_CONST 0 ('spam\\eggs\\_')
2 LOAD_CONST 1 (None)
4 LOAD_CONST 2 (-1)
6 BUILD_SLICE 2
8 BINARY_SUBSCR
10 RETURN_VALUE
For comparison:
>>> dis.dis(r"r'spam\eggs' '\\'")
1 0 LOAD_CONST 0 ('spam\\eggs\\')
2 RETURN_VALUE
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