[Tutor] Getting started with Python

[ppaarrkk]

I can't.


>>> import file.py


is all very well if the interpreter knows where file.py is.


I want to do this :

>>> import /directory1/directory2/file.py


Is this not possible ?

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[Tutor] sys.path.append

[ppaarrkk]

I can do this :

>>> sys.path.append ( 'C:\dump1' )

but not :

>>> x = 'C:\dir1'
>>> sys.path.append(x)

or :


but not :

>>> x = ['C:\dir1']
>>> sys.path.append(x)

Can I append variables to the path, rather than explicit strings ?

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[Tutor] Equivalent of grep in python

[ppaarrkk]

The following works :

file1 = open (file0, "r")

re.findall ( 'some_text', file1.readline() )


But this doesn't :

re.findall ( 'some_text', file1.readlines() )



How do I use grep for a whole text file, not just a single string ?
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Re: [Tutor] Equivalent of grep in python

[ppaarrkk]

file1.read() works.


What do I do if I want line numbers ?

I found this code :

http://snippets.dzone.com/posts/show/1638

src = open('2.htm').read()
pattern = '([^<]+)'  # or anything else
for m in re.finditer(pattern, src):
   start = m.start()
lineno = src.count('\n', 0, start) + 1
offset = start - src.rfind('\n', 0, start)
word = m.group(1)
print "2.htm(%s,%s): %s" % (lineno, offset, word)




Is there not a simpler way than this ?




ppaarrkk wrote:
> 
> The following works :
> 
> file1 = open (file0, "r")
> 
> re.findall ( 'some_text', file1.readline() )
> 
> 
> But this doesn't :
> 
> re.findall ( 'some_text', file1.readlines() )
> 
> 
> 
> How do I use grep for a whole text file, not just a single string ?
> 

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