bvdp wrote:
MRAB wrote:
bvdp wrote:
When reading lines of data from a file in the from (no quotes!)
foo\x20bar
and I assign to a variable in a line line like:
f = file('infile', 'r')
for a in f:
print a
the string is read in as string with the literal characters 'f', 'o'
... 'x' , '2' ...
as compared to an assignment like:
a="foo\x20bar"
which is identical to
a="foo bar"
Okay, so far ... I think this is what I want since my program is
using space characters as delimiters and I'm trying to use the \x20
notation to avoid splitting.
But, now the problem. When I finally assign the string with the \x20
to a variable the literals are still there. And here I really want
them all nicely converted to the desired values.
So, the question is: is there an "unescape()" for strings so that
"foo\x20bar" is converted to "foo bar"????
>>> a = r"foo\x20bar"
>>> print a
foo\x20bar
>>> a = a.decode("string-escape")
>>> print a
foo bar
Thanks ... I think in my original testing I tried decode() but it didn't
work. Testing more ...
the file has 2 lines:
foo bar
foo\x20bar
and the program to read is:
f=file('in', 'r')
for a in f:
a = a.strip()
a=a.decode()
You didn't specify what kind of decoding you want!
print list(a)
I get:
python read.py
[]
[u'f', u'o', u'o', u' ', u'b', u'a', u'r']
[u'f', u'o', u'o', u'\\', u'x', u'2', u'0', u'b', u'a', u'r']
So, the \x20 is still literal.
Any other ideas??? I suppose I could write a re expression ... but
surely that is not needed???
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