py_genetic <conor.robin...@gmail.com> writes: > Example of the issue for arguments sake: > > Platform Ubuntu server 12.04LTS, python 2.7 > > Say file1.txt has "hello world" in it. ^^^^^^^^^ Here, you speak of "file1.txt" (note the extension ".txt")
> subprocess.Popen("cat < file1 > file2", shell = True) > subprocess.call("cat < file1 > file2", shell = True) > os.system("cat < file1 > file2") But in your code, you use "file1" (without extension). If your code really references a non-existing file, you may well get what you are observing. -- http://mail.python.org/mailman/listinfo/python-list