[ python-Feature Requests-1154351 ] add get_current_dir_name() to os module

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Feature Requests item #1154351, was opened at 2005-03-01 16:26
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Category: Python Library
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Michael Hoffman (hoffmanm)
Assigned to: Nobody/Anonymous (nobody)
Summary: add get_current_dir_name() to os module

Initial Comment:
os.getcwd() does not use the contents of the PWD
environment variable, much as the glibc getcwd() does
not. This means that if a user sets the path using a
symbolic link, it will be dereferenced before being
passed by os.getcwd().

I propose that get_current_dir_name() be added, either
as a call to the glibc get_current_dir_name(), which
uses the PWD environment variable and therefore will
not dereference symbolic links in the path, or as a
fallback to this Pure Python function:

def get_current_dir_name():
    cwd = os.getcwd()
    
    try:
        pwd = os.environ["PWD"]
    except KeyError:
        return cwd

    cwd_stat, pwd_stat = map(os.stat, [cwd, pwd])

    if cwd_stat.st_dev == pwd_stat.st_dev and
cwd_stat.st_ino == pwd_stat.st_ino:
        return pwd
    else:
        return cwd


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