> i want to print something like this
>
> |\|
>
> first i tried it as string
>
> a = "|\|"
>
> it prints ok
>
> but when i put it to a list
>
> a = ["|\|"]
>
> it gives me '|\\|' .there are 2 back slashes...i only want one.. how
> can i properly escape it?
> I have tried [r"|\|"] , [r'\\'] but they do not work...
You omit how you're printing matters.
>>> s1 = '|\|'
>>> s2 = r'|\|'
>>> s3 = '|\\|'
>>> print repr(s1), '->', s1
'|\\|' -> |\|
>>> print repr(s2), '->', s2
'|\\|' -> |\|
>>> print repr(s3), '->', s3
'|\\|' -> |\|
There's a difference between the repr() of a string (which
escapes items that need to be escaped) and printing items. All
three *print* the item as you request it. All three represent
the item with the proper backslashes.
The preferred form of putting backslashes in a string is the s2
or s3 form, as the s1 form can have some "unpredictable"(*) results:
"\|" happens not to be a recognized escape sequence
"\t" is, so you get things like
>>> s = '\t\|'
>>> s
'\t\\|'
-tkc
(*) "unpredictable" defined as, "predictable, if you happen to
have memorized the exact set of characters that do or don't need
to beescaped"
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