def load_stylesheet():
<EOL>f = QtCore.QFile('<STR_LIT>')<EOL>if not f.exists():<EOL><INDENT>_logger().error('<STR_LIT>'<EOL>'<STR_LIT>')<EOL>return '<STR_LIT>'<EOL><DEDENT>else:<EOL><INDENT>f.open(QtCore.QFile.ReadOnly | QtCore.QFile.Text)<EOL>ts = QtCore.QTextStream(f)<EOL>stylesheet = ts.readAll()<EOL>if platform.system().lower() == '<STR_LIT>':  <EOL><INDENT>mac_fix = '''<STR_LIT>'''<EOL>stylesheet += mac_fix<EOL><DEDENT>return stylesheet<EOL><DEDENT>
Loads the stylesheet for use in a pyqt5 application.
:return the stylesheet string