batch mkdir using a file list

[DataSmash]

Hello,
I think I've tried everything now and can't figure out how to do it.
I want to read in a text list from the current directory,
and for each line in the list, make a system directory for that name.

My text file would look something like this:
1144
1145
1146
1147

I simply want to create these 4 directories.
It seems like something like the following
code should work, but it doesn't.

import os

file = open("list.txt", "r")
read = file.read()
print "Creating directory " + str(read)
os.mkdir(str(read))

Appreciate any help you can give!
R.D. Harles

 

[Fredrik Lundh]

I think I've tried everything now and can't figure out how to do it.
I want to read in a text list from the current directory,
and for each line in the list, make a system directory for that name.

My text file would look something like this:
1144
1145
1146
1147

I simply want to create these 4 directories.
It seems like something like the following
code should work, but it doesn't.

import os

file = open("list.txt", "r")
read = file.read()
print "Creating directory " + str(read)
os.mkdir(str(read))

read() returns *all* text in the file as a single string, but you
really want to process each line for itself. try this:

for name in open("list.txt"):
name = name.strip() # get rid of extra whitespace
os.mkdir(name)

</F>

 

[Jeremy Jones]

Hello,
I think I've tried everything now and can't figure out how to do it.
I want to read in a text list from the current directory,
and for each line in the list, make a system directory for that name.

My text file would look something like this:
1144
1145
1146
1147

I simply want to create these 4 directories.
It seems like something like the following
code should work, but it doesn't.

import os

file = open("list.txt", "r")
read = file.read()
print "Creating directory " + str(read)
os.mkdir(str(read))

Appreciate any help you can give!
R.D. Harles

Untested code:

import os
for line in open("list.txt", "r"):
os.mkdir(line)


- JMJ

 

[mensanator]

Untested code:

import os
for line in open("list.txt", "r"):
os.mkdir(line)

That won't work (in Windows at least) because you have
to remove the "\n" from the line before you pass it to
os.mkdir.

 

[DataSmash]

I am using bash shell on windows and I'm getting the error:
TypeError: loop over non-sequence

Is there any way around not messing with the text file.
I want to batch generate the text lists as well.

Thanks!

 

[DataSmash]

OR...if python can't handle this type of text file,
what do I need to do to remove the "\n" from the file?

 

[Peter Otten]

I am using bash shell on windows and I'm getting the error:
TypeError: loop over non-sequence

Use open(filename).readlines() instead of open(filename) or switch to a
current Python version.

OR...if python can't handle this type of text file,
what do I need to do to remove the "\n" from the file?

line.strip() removes all leading and trailing whitespace (not just "\n")
from the line string.

import os
for line in open("list.txt").readlines():
directory = line.strip()
os.mkdir(directory)

Peter

 

[DataSmash]

Awesome! That worked!
Much thanks to Peter and all of you who took the time to answer my
question.
R.D.