[PyQt] cannot expand the progress bar to the full width of status bar

iMath 2281570025 at qq.com
Mon Dec 15 03:39:13 GMT 2014

I want the progress bar to expand to the full width of status bar,but why there is a gap there?

Is there a widget there or something else ?‍

some code here


PS. can I add some text on the progress bar,there is no function like setText(), how can I do this ?‍
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