[Tutor] Re: all the slashes

[Abel Daniel]

Gerhard Venter  writes:

> Hi all
>
> I use the code below in Python 2.3, but in 2.2 it says:
> TypeError: 'in <string>' requires character as left operand
> I have tried r'//',  and '////' (to escape the slashes) to no avail.
>
>      myfile=open(r'/etc/sitelist','a')
>      if "//" in mystring:
>
Why would you need to escape it?

>>> '/' in 'ab/c'
True
>>> '/' in 'abc'
False
>>> 

OTOH, if you would be looking for \ -s (backslashes) you would need to escape
it:
>>> '\' in 'ab\c'
  File "<stdin>", line 1
    '\' in 'ab\c'
             ^
SyntaxError: invalid syntax
>>> '\\' in 'ab\c'
True
>>> 

Plus, if you do use the code you showed, then you have a bug: your version
is looking for '//' (two slashes) and not '/' (one slash).

-- 
Abel Daniel