newb: Join two string variables

[johnny]

How do I join two string variables?
I want to do: download_dir + filename.
download_dir=r' c:/download/'
filename =r'log.txt'

I want to get something like this:
c:/download/log.txt

[Fuzzyman]

johnny wrote:

How do I join two string variables?
I want to do: download_dir + filename.

That should do it. :-)

You can concatenate strings using the plus operator. For large number
of strings it is very inefficient. (Particularly in versions of Python
pre 2.4 or in IronPython.)

For these situations it is better to collect the strings in a list and
then join them using :

''.join(list_of _strings)

But for just two strings, plus is fine.

Fuzzyman
http://www.voidspace.org.uk/python/index.shtml

download_dir=r' c:/download/'
filename =r'log.txt'

I want to get something like this:
c:/download/log.txt

[Cameron Walsh]

johnny wrote:

How do I join two string variables?
I want to do: download_dir + filename.
download_dir=r' c:/download/'
filename =r'log.txt'

I want to get something like this:
c:/download/log.txt

Hi Johnny,

This is actually two questions:

1.) How do I concatenate strings
2.) How do I concatenate pathnames?

Answers:

1.)

>>download_dir= "C:/download/"
filename="log .txt"
path_to_file= download_dir+fi lename
path_to_fil e

'C:/download/log.txt'

2.)

>>import os
filename='log .txt'
path_to_fil e = os.path.join("C :/download",filen ame)
path_to_fil e

'C:/download/log.txt'
Help on function join in module posixpath:

join(a, *p)
Join two or more pathname components, inserting '/' as needed

Hope it helps,

Cameron.

[johnny]

In my code, I have the following:

p = posixpath.basen ame(e).strip
filename = download_dir+p

I am getting the following error:

filename = download_dir+p
TypeError: cannot concatenate 'str' and 'builtin_functi on_or_method'
objects
Cameron Walsh wrote:

johnny wrote:

How do I join two string variables?
I want to do: download_dir + filename.
download_dir=r' c:/download/'
filename =r'log.txt'

I want to get something like this:
c:/download/log.txt

Hi Johnny,

This is actually two questions:

1.) How do I concatenate strings
2.) How do I concatenate pathnames?

Answers:

1.)

>download_dir=" C:/download/"
filename="log. txt"
path_to_file=d ownload_dir+fil ename
path_to_file

'C:/download/log.txt'

2.)

>import os
filename='log. txt'
path_to_file = os.path.join("C :/download",filen ame)
path_to_file

'C:/download/log.txt'
Help on function join in module posixpath:

join(a, *p)
Join two or more pathname components, inserting '/' as needed

Hope it helps,

Cameron.

[Robert Bauck Hamar]

johnny wrote:

Please don't top post. Arrange your answer so that your comments follow what
you comment.

In my code, I have the following:

p = posixpath.basen ame(e).strip

make this:
p = posixpath.basen ame(e).strip()

filename = download_dir+p

I am getting the following error:

filename = download_dir+p
TypeError: cannot concatenate 'str' and 'builtin_functi on_or_method'
objects

Which is correct. Because you forgot to _call_ strip, you just stored (a
reference to) strip itself in p, and not its return value.

(rest of message deleted, because I don't comment on it.)

--
Robert Bauck Hamar
Der er to regler for suksess:
1. Fortell aldri alt du vet.
- Roger H. Lincoln

[John Machin]

johnny wrote:

In my code, I have the following:

p = posixpath.basen ame(e).strip
filename = download_dir+p

I am getting the following error:

filename = download_dir+p
TypeError: cannot concatenate 'str' and 'builtin_functi on_or_method'
objects

You need to *call* the strip method.

To see what you've actually done, do this:

p = posixpath.basen ame(e).strip
print repr(p)
filename = download_dir+p

To see what happens when you've fixed the problem, do this:

p = posixpath.basen ame(e).strip()
print repr(p)
filename = download_dir+p

*and* for portability, *don't* use "posixpath" , just use "path"

HTH,
John

[true911]

johnny wrote:

How do I join two string variables?
I want to do: download_dir + filename.
download_dir=r' c:/download/'
filename =r'log.txt'

I want to get something like this:
c:/download/log.txt

pathfn = download_dir+fi lename