Python: iterate (and read) all files in a directory (folder)

Pim — Tue, 24 Apr 2012 06:52:18 +0000

@adam

This should work:

if filename[0] == ‘.’: # if the first character is a dot
continue # skip the file

Python: iterate (and read) all files in a directory (folder)

VS — Mon, 16 Apr 2012 11:51:56 +0000

Hey i want to change the file path dynamically. Eg: “/cygdrive/d/Python_Study/Snehal/xyz/1.xml”
here xyz may be anything like default, config etc.. i want to read this path depending on xyz value. How can i do that???

Python: iterate (and read) all files in a directory (folder)

Bogdan — Wed, 11 Apr 2012 21:40:23 +0000

I guess fdupes could be compiled/run in cygwin.

There are tons of similar programs for windows, and some are even good enough, but I’m not up-to-date on that software – so cannot advise.

You could write the required python script by, e.g., first creating two dicts of {filename: filesize}, and then comparing them to find identical filesizes (and yield the two filenames). This is a suboptimal approach, but that probably doesn’t matter for low numbers of files; for higher numbers, you would want a different approach. (One more suboptimal idea, but slightly better, would be to populate the 1st dict with {size:name}, and then iterate over the files in the 2nd dir, checking for “size in dict”.)

Python: iterate (and read) all files in a directory (folder)

Paal — Wed, 11 Apr 2012 11:41:59 +0000

@Bogdan, Yeah, but I’m on a windows platform at work. Know of any similar program for windows? Or a python script

Python: iterate (and read) all files in a directory (folder)

Bogdan — Tue, 10 Apr 2012 18:00:07 +0000

@Vaishu, you could wrap the conversion to float() into a try..except block, and thus separate purely-numeric values from alphanumeric.

@Paal, you could use a program like ‘fdupes’, which does exactly what you want – de-duplicates the contents of two arbitrary directories.

Python: iterate (and read) all files in a directory (folder)

Paal — Tue, 10 Apr 2012 13:08:21 +0000

Hey, I’m having a different problem.
I have two or more folders with lots of files in them. Both folders contain some files that are exactly the same, but the files have different names. I want to use a python script to matches files in these two folders by size. Cause When the size of the file is the same, I think it’s a high enough possibillity that the files are the same.
The best script would merge these to folders together and delete duplicates, based on name or size, or name and size.

Anyone who know how to write one of these scripts?

That would be really helpfull!

sorry bout my bad english.

Python: iterate (and read) all files in a directory (folder)

vaishu — Wed, 04 Apr 2012 11:29:08 +0000

sorry,
contents of seq.txt is
9.45
9SEQ
6.346
4CGF
2.5632
3RES
8.1452
2HAB
and i want results of only floating points,
i.e)
2.5632
6.346
8.1452
9.45

Python: iterate (and read) all files in a directory (folder)

vaishu — Mon, 02 Apr 2012 06:13:10 +0000

hELLO,
Python Comments used for arranging floating points in ascending order
For ex..,
In Drive=C:/ Folder=r Textfile=seq.txt
Contents of seq.txt=
9.45
6.346
2.5632
8.1452
My aim is i want result as
2.5632
6.346
8.1452
9.45
what python code should be used for such type of process

Python: iterate (and read) all files in a directory (folder)

vaishu — Mon, 26 Mar 2012 04:48:32 +0000

Hello sir,
Thank you very much to Bogdan and Adam.

Python: iterate (and read) all files in a directory (folder)

Bogdan — Sat, 24 Mar 2012 17:52:26 +0000

@Adam, I’m not currently aware of such a method. If it exists, then it should be either somewhere in os.path, or in collections. Please report back if you find it

@Priya, you should probably use http://stackoverflow.com/ or http://codereview.stackexchange.com/ to post your code and have volunteers help you with it.

Python: iterate (and read) all files in a directory (folder)

priya — Fri, 23 Mar 2012 06:00:40 +0000

Hiiii
pls help me to do this simple program:
Drive:F:/
folder:X
files:x1.txt,x2.txt,x3.txt,x4.txt,x5.txt(5 seperate files)

I have to read all these files quickly, so i had generated a list as list.txt=['F:/X/x1.txt','F:/X/x2.txt',F:/X/x3.txt',F:/X/x4.txt',F:/X/x5.txt']

now i have to read list.txt file and i want to generate listres.txt file by ‘w’
where
listres.txt=['F:/X/x1res.txt','F:/X/x2res.txt',F:/X/x3res.txt',F:/X/x4res.txt',F:/X/x5res.txt']

i expect to write result of X1.txt file in X1res.txt alone(X2.txt file in X2res.txt file) but unfortunately it is writing result of all x1+x2+x3+x4+x5 files in x1res files and same result in x2res files how to seperate it?

Python: iterate (and read) all files in a directory (folder)

Adam — Fri, 23 Mar 2012 03:01:25 +0000

Thank @Bogdan. That definitely helps, but there’s no way to systematically look for only visible files?

Python: iterate (and read) all files in a directory (folder)

Bogdan — Thu, 22 Mar 2012 21:21:07 +0000

@Vaishu: just use the script with a proper mask, like *.pdb. Maybe also make it recursive (see comment 10), if you have PDB files in sub-directories.

@Adam: just use the proper filename mask. For example, *.* should not include any files which start with a dot (like .DS_Store). Another way is to check the filename in Python, e.g.

if filename == '.DS_Store':
    continue  # skip the file

Python: iterate (and read) all files in a directory (folder)

Adam — Thu, 22 Mar 2012 15:55:22 +0000

First off, this is great! Can’t begin to tell you how helpful it is. One question: Is there a way to have it loop through only visible files? For example, in every folder, Mac OSX creates a .DS_Store file. When I iterate through, it picks up this file, which gets included in any subsequent arrays, lists, etc.

Thanks

Python: iterate (and read) all files in a directory (folder)

vaishu — Fri, 16 Mar 2012 11:07:00 +0000

Is there a way to open and read many PDB files(eg:1ASD.pdb,2sew.pdb,5res.pdb) from a folder(eg:protein) present in drive(eg:E:/)automatically without entering each name of the PDB file? bcos it is upto 14,000 PDB files.

Python: iterate (and read) all files in a directory (folder)

born — Thu, 13 Oct 2011 12:40:26 +0000

hi …
I have been messing around with a python program to browse through images in a directory and display it in a canvas.can anybody help??

Python: iterate (and read) all files in a directory (folder)

toto — Wed, 14 Sep 2011 09:28:56 +0000

thank you very much for your explaining. I get a problem when try to list file or directory in Python. You solve my problem

Python: iterate (and read) all files in a directory (folder)

ablaze — Wed, 10 Aug 2011 12:54:24 +0000

Hi…
I am working in ubuntu. I have a bunch of commands (say 10 commands like cmd1, cmd2, cmd3…………..cmd10)
I want to write a python script, which can achive the following:

It should traverse through the directory structure and apply a command at particular directory path.
The location and the commands are already known to me.

/local/mnt/myspace/sample1$ cmd1
/local/mnt/myspace/sample2$ cmd2
/local/mnt/myspace$ cmd3
/local/mnt$cmd4
/local/mnt/myspace/sample9$ cmd 8
/local/mnt/myspace/sample3$ dmd10

can someone please provide the script as I am not event a beginner in python.

Python: iterate (and read) all files in a directory (folder)

Stefan — Fri, 13 May 2011 12:20:47 +0000

I found it:

dirList=os.listdir(path)

dirList.sort()

for fname in dirList:
print( fname)

Python: iterate (and read) all files in a directory (folder)

Stefan — Fri, 13 May 2011 11:51:45 +0000

Is there a possibility to list the files in order, by name ?
For example :
/path/file01.txt
/path/file02.txt
…………..

If I use the codes you presented here i get scrambled order