Writing a list to A CSV file (Newbie needs help)

[Eclipse]

G'day All

I am just starting to learn programming and need a bit of help with this one.

I want to be able to create a list containing Path, Directory, Filename and write them out to a csv file (ie path,dir,file). This is what i have so far:

import os
import csv

writer = csv.writer(open ("C:\Documen ts and Settings\Smythv ille\My Documents\Pytho n\Stuff.csv", "wb"))

for root, dirs, files in os.walk('C:\Doc uments and Settings\Smythv ille\My Documents\BitTo rrent Downloads'):
writer.writerow s(root, dirs, files)
f.close()
When i run it in the command window i get this:

Traceback (most recent call last):
File "C:\Documen ts and Settings\Smythv ille\My Documents\Pytho n\Stuff\Walkdir _clean.py", line 7, in <module>
writer.writerow s(root, dirs, files)
TypeError: writerows() takes exactly one argument (3 given)

I understand that I am giving it the three args but how can it convert those args into a line in a csv file.

Please help

Thanks

Pete

[bvdet]

G'day All

I am just starting to learn programming and need a bit of help with this one.

I want to be able to create a list containing Path, Directory, Filename and write them out to a csv file (ie path,dir,file). This is what i have so far:

import os
import csv

writer = csv.writer(open ("C:\Documen ts and Settings\Smythv ille\My Documents\Pytho n\Stuff.csv", "wb"))

for root, dirs, files in os.walk('C:\Doc uments and Settings\Smythv ille\My Documents\BitTo rrent Downloads'):
writer.writerow s(root, dirs, files)
f.close()
When i run it in the command window i get this:

Traceback (most recent call last):
File "C:\Documen ts and Settings\Smythv ille\My Documents\Pytho n\Stuff\Walkdir _clean.py", line 7, in <module>
writer.writerow s(root, dirs, files)
TypeError: writerows() takes exactly one argument (3 given)

I understand that I am giving it the three args but how can it convert those args into a line in a csv file.

Please help

Thanks

Pete

The csv writerows() method accepts a sequence of rows. Each row must be a sequence of strings or numbers. Perhaps it may help if you understood the information that os.walk compiles. Try the following on one of your directories:[code=Python]import os
a = os.walk(directo ry_name)

for root, dir, file in a:

print "Root directory: %s" % (root)

if dir:
print "Subdirecto ries under %s:" % (root)
dirList = map(lambda x: '%s\n' % (x), dir)
dirStr = "".join(dirList )
print dirStr
else:
print "There are no subdirectories under directory %s\n" % (root)

if file:
print "Files in directory %s:" % (root)
fileList = map(lambda x: '%s\n' % (os.path.join(r oot, x)), file)
fileStr = "".join(fileLis t)
print fileStr
else:
print "There are no files in directory %s\n" % (root)[/code]

[Eclipse]

Thanks for answering bvdet.

I used your code and played around with it to see how the os.walk function worked. If I am not mistaken the os.walk function walks down through the directories from the path supplied and creates a list as follows (Directory path,[subdir1,subdir2],[filename1,filen ame2]).

After looking at what os.walk returns I can see that what I was trying to do in the first post is not correct. What I was actually after is to create a csv file that shows each file from the path supplied and all subdirectories underneath it and its path. eg:

path,file1
path,file2
path\subdir,fil e1
path\subdir,fil e2
path\subdir\sub subdir1,file1
path\subdir\sub subdir2,file1

I have had a play with some more code but i don't think that this will achieve what I am after. (posted below)

When I run this code in the command window it does nothing, and i don't know why. Any Ideas???

[CODE=PYTHON] import os
import csv
a = os.walk('C:\Doc uments and Settings\Smythv ille\My Documents\BitTo rrent Downloads')
f = open('C:\Docume nts and Settings\Smythv ille\My Documents\Pytho n\Stuff.csv', 'w')
count = 1
for root, dirs, files in a:
output = csv.writer(f, dialect=csv.exc el, delimiter=',')
output.writerow s(a)
print "Cycling... ", count
count += 1
f.close()
[/CODE]

I put the count and print commands in to see if the code was iterating but it didn't

Thanks for your help

Eclipse

[bvdet]

Thanks for answering bvdet.

I used your code and played around with it to see how the os.walk function worked. If I am not mistaken the os.walk function walks down through the directories from the path supplied and creates a list as follows (Directory path,[subdir1,subdir2],[filename1,filen ame2]).

After looking at what os.walk returns I can see that what I was trying to do in the first post is not correct. What I was actually after is to create a csv file that shows each file from the path supplied and all subdirectories underneath it and its path. eg:

path,file1
path,file2
path\subdir,fil e1
path\subdir,fil e2
path\subdir\sub subdir1,file1
path\subdir\sub subdir2,file1

I have had a play with some more code but i don't think that this will achieve what I am after. (posted below)

When I run this code in the command window it does nothing, and i don't know why. Any Ideas???

[CODE=PYTHON] import os
import csv
a = os.walk('C:\Doc uments and Settings\Smythv ille\My Documents\BitTo rrent Downloads')
f = open('C:\Docume nts and Settings\Smythv ille\My Documents\Pytho n\Stuff.csv', 'w')
count = 1
for root, dirs, files in a:
output = csv.writer(f, dialect=csv.exc el, delimiter=',')
output.writerow s(a)
print "Cycling... ", count
count += 1
f.close()
[/CODE]

I put the count and print commands in to see if the code was iterating but it didn't

Thanks for your help

Eclipse

Your code is not indented properly. You do not have to use the csv module. Sample code: [code=Python]f = open('file_name ', 'w')
outputList = []
for root, dirs, files in os.walk('dir_na me'):
outputList.appe nd(root)
for d in dirs:
outputList.appe nd(','.join([root, d]))
for f1 in files:
outputList.appe nd(','.join([root, f1]))
f.write('\n'.jo in(outputList))
f.close()[/code]