<p dir="auto">In OS X (Yosemite), saving a file through a dialog can generally prompt the user for the password of any closed (and recently used) disk image (for which no password was saved). The user can then choose to dismiss the password prompt.</p>
<p dir="auto">The OS X backend of Matplotlib 1.4.2. instead does not show the password prompt dialog, but prints (when in IPython) <code class="notranslate">Enter password to access "…"</code> (with the name of the disk image) <em>and blocks</em>: IPython cannot be used anymore (no command can be entered).</p>
<p dir="auto">I install matplotlib on OS X using a Gentoo prefix install. Everything seems to work ok. The only problem I've encountered so far is that when I try to save something to a file, I can't change the filename on the dialog box, because the keyboard strokes go to the terminal where I am running python. I don't know if this is a matplotlib issue or a issue in tkinter from Python, but matplotlib is the only place where I have this problem.</p>