如何从Python中的字符串中删除特定的节/摘录

Question

I have a PyQt stylesheet given as a str type where I insert it into app.setStyleSheet() to change CSS properties. I want to remove a specific section of code within this string, specifically this section:

QSlider::groove:horizontal {
    background: #32414B;
    border: 1px solid #32414B;
    height: 4px;
    margin: 0px;
    border-radius: 4px;
}

This is the entire stylesheet string

stylesheet = '''
/* QWidget ---------------------------------------------------------------- */

QWidget {
    background-color: #19232D;
    border: 0px solid #32414B;
    padding: 0px;
    color: #F0F0F0;
    selection-background-color: #1464A0;
    selection-color: #F0F0F0;
}

QWidget:disabled {
    background-color: #19232D;
    color: #787878;
    selection-background-color: #14506E;
    selection-color: #787878;
}

QWidget:item:selected {
    background-color: #1464A0;
}

QWidget:item:hover {
    background-color: #148CD2;
    color: #32414B;
}

/* QMainWindow ------------------------------------------------------------ */
/* This adjusts the splitter in the dock widget, not qsplitter              */


QMainWindow::separator {
    background-color: #32414B;
    border: 0 solid #19232D;
    spacing: 0;
    padding: 2px;
}

QMainWindow::separator:hover {
    background-color: #505F69;
    border: 0px solid #148CD2;
}

QMainWindow::separator:horizontal {
    width: 5px;
    margin-top: 2px;
    margin-bottom: 2px;
    image: url(:/qss_icons/rc/Vsepartoolbar.png);
}

QMainWindow::separator:vertical {
    height: 5px;
    margin-left: 2px;
    margin-right: 2px;
    image: url(:/qss_icons/rc/Hsepartoolbar.png);
}

/* QToolTip --------------------------------------------------------------- */

QToolTip {
    background-color: #148CD2;
    border: 1px solid #19232D;
    color: #19232D;
    padding: 0;   /*remove padding, for fix combo box tooltip*/
    opacity: 230; /*reducing transparency to read better*/
}

/* QStatusBar ------------------------------------------------------------- */

QStatusBar {
    border: 1px solid #32414B;
    background: #32414B; /*fixes spyder #9120,#9121*/
}

QStatusBar QToolTip {
    background-color: #148CD2;
    border: 1px solid #19232D;
    color: #19232D;
    padding: 0;   /*remove padding, for fix combo box tooltip*/
    opacity: 230; /*reducing transparency to read better*/
}

QStatusBar QLabel {
    background-color: transparent; /*fixes spyder #9120,#9121*/
}

/* QCheckBox -------------------------------------------------------------- */

QCheckBox {
    background-color: #19232D;
    color: #F0F0F0;
    spacing: 4px;
    outline: none;
    padding-top: 4px;
    padding-bottom: 4px;
}

QCheckBox:focus {
    border: none;
}

QCheckBox QWidget:disabled {
    background-color: #19232D;
    color: #787878;
}

QCheckBox::indicator {
    margin-left: 4px;
    width: 16px;
    height: 16px;
}

QCheckBox::indicator:unchecked {
    image: url(:/qss_icons/rc/checkbox_unchecked.png);
}

QCheckBox::indicator:unchecked:hover,
QCheckBox::indicator:unchecked:focus,
QCheckBox::indicator:unchecked:pressed {
    border: none;
    image: url(:/qss_icons/rc/checkbox_unchecked_focus.png);
}

QCheckBox::indicator:unchecked:disabled {
    image: url(:/qss_icons/rc/checkbox_unchecked_disabled.png);
}

QCheckBox::indicator:checked {
    image: url(:/qss_icons/rc/checkbox_checked.png);
}

QCheckBox::indicator:checked:hover,
QCheckBox::indicator:checked:focus,
QCheckBox::indicator:checked:pressed {
    border: none;
    image: url(:/qss_icons/rc/checkbox_checked_focus.png);
}

QCheckBox::indicator:checked:disabled{
    image: url(:/qss_icons/rc/checkbox_checked_disabled.png);
}

QCheckBox::indicator:indeterminate {
    image: url(:/qss_icons/rc/checkbox_indeterminate.png);
}

QCheckBox::indicator:indeterminate:disabled {
    image: url(:/qss_icons/rc/checkbox_indeterminate_disabled.png);
}

QCheckBox::indicator:indeterminate:focus,
QCheckBox::indicator:indeterminate:hover,
QCheckBox::indicator:indeterminate:pressed {
    image: url(:/qss_icons/rc/checkbox_indeterminate_focus.png);
}

/* QGroupBox -------------------------------------------------------------- */

QGroupBox {
    font-weight: bold;
    border: 1px solid #32414B;
    border-radius: 4px;
    padding: 4px;
    margin-top: 16px;
}



QGroupBox::title {
    subcontrol-origin: margin;
    subcontrol-position: top left;
    left: 3px;
    padding-left: 3px;
    padding-right: 5px;
    padding-top: 8px;
    padding-bottom: 16px;
}

QGroupBox::indicator {
    margin-left: 4px;
    width: 16px;
    height: 16px;
}

QGroupBox::indicator {
    margin-left: 2px;
}

QGroupBox::indicator:unchecked:hover,
QGroupBox::indicator:unchecked:focus,
QGroupBox::indicator:unchecked:pressed {
    border: none;
    image: url(:/qss_icons/rc/checkbox_unchecked_focus.png);
}

QGroupBox::indicator:checked:hover,
QGroupBox::indicator:checked:focus,
QGroupBox::indicator:checked:pressed {
    border: none;
    image: url(:/qss_icons/rc/checkbox_checked_focus.png);
}

QGroupBox::indicator:checked:disabled {
    image: url(:/qss_icons/rc/checkbox_checked_disabled.png);
}

QGroupBox::indicator:unchecked:disabled {
    image: url(:/qss_icons/rc/checkbox_unchecked_disabled.png);
}

/* QRadioButton ----------------------------------------------------------- */

QRadioButton {
    background-color: #19232D;
    color: #F0F0F0;
    spacing: 0;
    padding: 0;
    border: none;
    outline: none;
}

QRadioButton:focus {
    border: none;
}

QRadioButton:disabled {
    background-color: #19232D;
    color: #787878;
    border: none;
    outline: none;
}

QRadioButton QWidget {
    background-color: #19232D;
    color: #F0F0F0;
    spacing: 0px;
    padding: 0px;
    outline: none;
    border: none;
}

QRadioButton::indicator {
    border: none;
    outline: none;
    margin-bottom: 2px;
    width: 25px;
    height: 25px;
}

QRadioButton::indicator:unchecked {
    image: url(:/qss_icons/rc/radio_unchecked.png);
}

QRadioButton::indicator:unchecked:hover,
QRadioButton::indicator:unchecked:focus,
QRadioButton::indicator:unchecked:pressed {
    border: none;
    outline: none;
    image: url(:/qss_icons/rc/radio_unchecked_focus.png);
}

QRadioButton::indicator:checked {
    border: none;
    outline: none;
    image: url(:/qss_icons/rc/radio_checked.png);
}

QRadioButton::indicator:checked:hover,
QRadioButton::indicator:checked:focus,
QRadioButton::indicator:checked:pressed {
    border: none;
    outline: none;
    image: url(:/qss_icons/rc/radio_checked_focus.png);
}

QRadioButton::indicator:checked:disabled {
    outline: none;
    image: url(:/qss_icons/rc/radio_checked_disabled.png);
}

QRadioButton::indicator:unchecked:disabled {
    image: url(:/qss_icons/rc/radio_unchecked_disabled.png);
}

/* QMenuBar --------------------------------------------------------------- */

QMenuBar {
    background-color: #32414B;
    padding: 2px;
    border: 1px solid #19232D;
    color: #F0F0F0;
}

QMenuBar:focus {
    border: 1px solid #148CD2;
}

QMenuBar::item {
    background: transparent;
    padding: 4px;
}

QMenuBar::item:selected {
    padding: 4px;
    background: transparent;
    border: 0px solid #32414B;
}

QMenuBar::item:pressed {
    padding: 4px;
    border: 0px solid #32414B;
    background-color: #148CD2;
    color: #F0F0F0;
    margin-bottom: 0px;
    padding-bottom: 0px;
}

/* QMenu ------------------------------------------------------------------ */

QMenu {
    border: 0px solid #32414B;
    color: #F0F0F0;
    margin: 0px;
}

QMenu::separator {
    height: 2px;
    background-color: #505F69;
    color: #F0F0F0;
    padding-left: 4px;
    margin-left: 2px;
    margin-right: 2px;
}

QMenu::icon {
    margin: 0px;
    padding-left:4px;
}

QMenu::item {
    padding: 4px 24px 4px 24px;
    border: 1px transparent #32414B;  /* reserve space for selection border */
}

QMenu::item:selected {
    color: #F0F0F0;
}



QMenu::indicator {
    width: 12px;
    height: 12px;
    padding-left:6px;
}

/* non-exclusive indicator = check box style indicator (see QActionGroup::setExclusive) */

QMenu::indicator:non-exclusive:unchecked {
    image: url(:/qss_icons/rc/checkbox_unchecked.png);
}

QMenu::indicator:non-exclusive:unchecked:selected {
    image: url(:/qss_icons/rc/checkbox_unchecked_disabled.png);
}

QMenu::indicator:non-exclusive:checked {
    image: url(:/qss_icons/rc/checkbox_checked.png);
}

QMenu::indicator:non-exclusive:checked:selected {
    image: url(:/qss_icons/rc/checkbox_checked_disabled.png);
}

/* exclusive indicator = radio button style indicator (see QActionGroup::setExclusive) */

QMenu::indicator:exclusive:unchecked {
    image: url(:/qss_icons/rc/radio_unchecked.png);
}

QMenu::indicator:exclusive:unchecked:selected {
    image: url(:/qss_icons/rc/radio_unchecked_disabled.png);
}

QMenu::indicator:exclusive:checked {
    image: url(:/qss_icons/rc/radio_checked.png);
}

QMenu::indicator:exclusive:checked:selected {
    image: url(:/qss_icons/rc/radio_checked_disabled.png);
}

QMenu::right-arrow {
    margin: 5px;
    image: url(:/qss_icons/rc/right_arrow.png)
}

/* QAbstractItemView ------------------------------------------------------ */

QAbstractItemView {
    alternate-background-color: #19232D;
    color: #F0F0F0;
    border: 1px solid #32414B;
    border-radius: 4px;
}

QAbstractItemView QLineEdit {
    padding: 2px;
}

/* QAbstractScrollArea ---------------------------------------------------- */

QAbstractScrollArea {
    background-color: #19232D;
    border: 1px solid #32414B;
    border-radius: 4px;
    padding: 4px;
    color: #F0F0F0;
}

QAbstractScrollArea:disabled {
    color: #787878;
}

/* QScrollArea ------------------------------------------------------------ */

QScrollArea QWidget QWidget:disabled {
    background-color: #19232D;
}

/* QScrollBar ------------------------------------------------------------- */

QScrollBar:horizontal {
    height: 16px;
    margin: 2px 16px 2px 16px;
    border: 1px solid #32414B;
    border-radius: 4px;
    background-color: #19232D;
}

QScrollBar::handle:horizontal {
    background-color: #787878;
    border: 1px solid #32414B;
    border-radius: 4px;
    min-width: 8px;

}

QScrollBar::handle:horizontal:hover {
    background-color: #148CD2;
    border: 1px solid #148CD2;
    border-radius: 4px;
    min-width: 8px;
}

QScrollBar::add-line:horizontal {
    margin: 0px 0px 0px 0px;
    border-image: url(:/qss_icons/rc/right_arrow_disabled.png);
    width: 10px;
    height: 10px;
    subcontrol-position: right;
    subcontrol-origin: margin;
}

QScrollBar::sub-line:horizontal {
    margin: 0px 3px 0px 3px;
    border-image: url(:/qss_icons/rc/left_arrow_disabled.png);
    height: 10px;
    width: 10px;
    subcontrol-position: left;
    subcontrol-origin: margin;
}

QScrollBar::add-line:horizontal:hover,
QScrollBar::add-line:horizontal:on {
    border-image: url(:/qss_icons/rc/right_arrow.png);
    height: 10px;
    width: 10px;
    subcontrol-position: right;
    subcontrol-origin: margin;
}

QScrollBar::sub-line:horizontal:hover,
QScrollBar::sub-line:horizontal:on {
    border-image: url(:/qss_icons/rc/left_arrow.png);
    height: 10px;
    width: 10px;
    subcontrol-position: left;
    subcontrol-origin: margin;
}

QScrollBar::up-arrow:horizontal,
QScrollBar::down-arrow:horizontal {
    background: none;
}

QScrollBar::add-page:horizontal,
QScrollBar::sub-page:horizontal {
    background: none;
}

QScrollBar:vertical {
    background-color: #19232D;
    width: 16px;
    margin: 16px 2px 16px 2px;
    border: 1px solid #32414B;
    border-radius: 4px;
}

QScrollBar::handle:vertical {
    background-color: #787878;
    border: 1px solid #32414B;
    min-height: 8px;
    border-radius: 4px;
}

QScrollBar::handle:vertical:hover {
    background-color: #148CD2;
    border: 1px solid #148CD2;
    border-radius: 4px;
    min-height: 8px;

}

QScrollBar::sub-line:vertical {
    margin: 3px 0px 3px 0px;
    border-image: url(:/qss_icons/rc/up_arrow_disabled.png);
    height: 10px;
    width: 10px;
    subcontrol-position: top;
    subcontrol-origin: margin;
}

QScrollBar::add-line:vertical {
    margin: 3px 0px 3px 0px;
    border-image: url(:/qss_icons/rc/down_arrow_disabled.png);
    height: 10px;
    width: 10px;
    subcontrol-position: bottom;
    subcontrol-origin: margin;
}

QScrollBar::sub-line:vertical:hover,
QScrollBar::sub-line:vertical:on {
    border-image: url(:/qss_icons/rc/up_arrow.png);
    height: 10px;
    width: 10px;
    subcontrol-position: top;
    subcontrol-origin: margin;
}

QScrollBar::add-line:vertical:hover,
QScrollBar::add-line:vertical:on {
    border-image: url(:/qss_icons/rc/down_arrow.png);
    height: 10px;
    width: 10px;
    subcontrol-position: bottom;
    subcontrol-origin: margin;
}

QScrollBar::up-arrow:vertical,
QScrollBar::down-arrow:vertical {
    background: none;
}

QScrollBar::add-page:vertical,
QScrollBar::sub-page:vertical {
    background: none;
}

/* QTextEdit--------------------------------------------------------------- */

QTextEdit {
    background-color: #19232D;
    color: #F0F0F0;
    border: 1px solid #32414B;
}

QTextEdit:hover {
    border: 1px solid #148CD2;
    color: #F0F0F0;
}

QTextEdit:selected {
    background: #1464A0;
    color: #32414B;
}

/* QPlainTextEdit --------------------------------------------------------- */

QPlainTextEdit {
    background-color: #19232D;
    color: #F0F0F0;
    border-radius: 4px;
    border: 1px solid #32414B;
}

QPlainTextEdit:hover {
    border: 1px solid #148CD2;
    color: #F0F0F0;
}

QPlainTextEdit:selected {
    background: #1464A0;
    color: #32414B;
}

/* QSizeGrip --------------------------------------------------------------- */

QSizeGrip {
    image: url(:/qss_icons/rc/sizegrip.png);
    width: 12px;
    height: 12px;
}

/* QStackedWidget --------------------------------------------------------- */

QStackedWidget {
    padding: 4px;
    border: 1px solid #32414B;
    border: 1px solid #19232D;
}

/* QToolBar --------------------------------------------------------------- */

QToolBar {
    background-color: #32414B;
    border-bottom: 1px solid #19232D;
    padding: 2px;
    font-weight: bold;
}

QToolBar QToolButton{
    background-color: #32414B;
}

QToolBar::handle:horizontal {
    width: 6px;
    image: url(:/qss_icons/rc/Hmovetoolbar.png);
}

QToolBar::handle:vertical {
    height: 6px;
    image: url(:/qss_icons/rc/Vmovetoolbar.png);
}

QToolBar::separator:horizontal {
    width: 3px;
    image: url(:/qss_icons/rc/Hsepartoolbar.png);
}

QToolBar::separator:vertical {
    height: 3px;
    image: url(:/qss_icons/rc/Vsepartoolbar.png);
}

QToolButton#qt_toolbar_ext_button {
    background: #32414B;
    border: 0px;
    color: #F0F0F0;
    image: url(:/qss_icons/rc/right_arrow.png);
}

/* QAbstractSpinBox ------------------------------------------------------- */

QAbstractSpinBox {
    background-color: #19232D;
    border: 1px solid #32414B;
    color: #F0F0F0;
    padding-top: 2px;     /* This fix  103, 111*/
    padding-bottom: 2px;  /* This fix  103, 111*/
    padding-left: 4px;
    padding-right: 4px;
    border-radius: 4px;
    /* min-width: 5px; removed to fix 109 */
}

QAbstractSpinBox:up-button {
    background-color: transparent #19232D;
    subcontrol-origin: border;
    subcontrol-position: top right;
    border-left: 1px solid #32414B;
    margin: 1px;
}

QAbstractSpinBox::up-arrow,
QAbstractSpinBox::up-arrow:disabled,
QAbstractSpinBox::up-arrow:off {
    image: url(:/qss_icons/rc/up_arrow_disabled.png);
    width: 9px;
    height: 9px;
}

QAbstractSpinBox::up-arrow:hover {
    image: url(:/qss_icons/rc/up_arrow.png);
}

QAbstractSpinBox:down-button {
    background-color: transparent #19232D;
    subcontrol-origin: border;
    subcontrol-position: bottom right;
    border-left: 1px solid #32414B;
    margin: 1px;
}

QAbstractSpinBox::down-arrow,
QAbstractSpinBox::down-arrow:disabled,
QAbstractSpinBox::down-arrow:off {
    image: url(:/qss_icons/rc/down_arrow_disabled.png);
    width: 9px;
    height: 9px;
}

QAbstractSpinBox::down-arrow:hover {
    image: url(:/qss_icons/rc/down_arrow.png);
}

QAbstractSpinBox:hover{
    border: 1px solid #148CD2;
    color: #F0F0F0;
}

QAbstractSpinBox:selected {
    background: #1464A0;
    color: #32414B;
}

/* ------------------------------------------------------------------------ */
/* DISPLAYS --------------------------------------------------------------- */
/* ------------------------------------------------------------------------ */

/* QLabel ----------------------------------------------------------------- */

QLabel {
    background-color: #19232D;
    border: 0px solid #32414B;
    padding: 2px;
    margin: 0px;
    color: #F0F0F0
}

QLabel::disabled {
    background-color: #19232D;
    border: 0px solid #32414B;
    color: #787878;
}

/* QTextBrowser ----------------------------------------------------------- */

QTextBrowser {
    background-color: #19232D;
    border: 1px solid #32414B;
    color: #F0F0F0;
    border-radius: 4px;
}

QTextBrowser:disabled {
    background-color: #19232D;
    border: 1px solid #32414B;
    color: #787878;
    border-radius: 4px;
}

QTextBrowser:hover,
QTextBrowser:!hover,
QTextBrowser::selected,
QTextBrowser::pressed {
    border: 1px solid #32414B;
}

/* QGraphicsView --------------------------------------------------------- */

QGraphicsView {
    background-color: #19232D;
    border: 1px solid #32414B;
    color: #F0F0F0;
    border-radius: 4px;
}

QGraphicsView:disabled {
    background-color: #19232D;
    border: 1px solid #32414B;
    color: #787878;
    border-radius: 4px;
}

QGraphicsView:hover,
QGraphicsView:!hover,
QGraphicsView::selected,
QGraphicsView::pressed {
    border: 1px solid #32414B;
}

/* QCalendarWidget -------------------------------------------------------- */

QCalendarWidget {
    border: 1px solid #32414B;
    border-radius: 4px;
}

QCalendarWidget:disabled {
    background-color: #19232D;
    color: #787878;
}

/* QLCDNumber ------------------------------------------------------------- */

QLCDNumber {
    background-color: #19232D;
    color: #F0F0F0;
}

QLCDNumber:disabled {
    background-color: #19232D;
    color: #787878;
}

/* QProgressBar ----------------------------------------------------------- */

QProgressBar {
    background-color: #19232D;
    border: 1px solid #32414B;
    color: #F0F0F0;
    border-radius: 4px;
    text-align: center;
}

QProgressBar:disabled {
    background-color: #19232D;
    border: 1px solid #32414B;
    color: #787878;
    border-radius: 4px;
    text-align: center;
}

QProgressBar::chunk {
    background-color: #1464A0;
    color: #19232D;
    border-radius: 4px;
}

QProgressBar::chunk:disabled {
    background-color: #14506E;
    color: #787878;
    border-radius: 4px;
}


/* ------------------------------------------------------------------------ */
/* BUTTONS ---------------------------------------------------------------- */
/* ------------------------------------------------------------------------ */

/* QPushButton ------------------------------------------------------------ */

QPushButton {
    background-color: #505F69 ;
    border: 1px solid #32414B;
    color: #F0F0F0;
    border-radius: 4px;
    padding: 3px;
    outline: none;
}

QPushButton:disabled {
    background-color: #32414B;
    border: 1px solid #32414B;
    color: #787878;
    border-radius: 4px;
    padding: 3px;
}


QPushButton:checked {
    background-color: #32414B;
    border: 1px solid #32414B;
    border-radius: 4px;
    padding: 3px;
    outline: none;
}

QPushButton:checked:disabled {
    background-color: #19232D;
    border: 1px solid #32414B;
    color: #787878;
    border-radius: 4px;
    padding: 3px;
    outline: none;
}

QPushButton::menu-indicator {
    subcontrol-origin: padding;
    subcontrol-position: bottom right;
    bottom: 4px;
}

QPushButton:pressed {
    background-color: #19232D;
    border: 1px solid #19232D;
}

QPushButton:hover,
QPushButton:checked:hover{
    border: 1px solid #148CD2;
    color: #F0F0F0;
}

QPushButton:pressed:hover{
    border: 1px solid #1464A0;
}

QPushButton:selected,
QPushButton:checked:selected{
    background: #1464A0;
    color: #32414B;
}

/* QToolButton ------------------------------------------------------------ */

QToolButton {
    background-color: transparent;
    border: 1px solid #32414B;
    border-radius: 4px;
    margin: 0px;
    padding: 2px;
}

QToolButton:checked {
    background-color: #19232D;
    border: 1px solid #19232D;
}

QToolButton:pressed {
    background-color: #19232D;
    border: 1px solid #19232D;

}

QToolButton:disabled {
    border: 1px solid #32414B;
}

QToolButton:hover,
QToolButton:checked:hover{
    border: 1px solid #148CD2;
}
QToolButton:pressed:hover{
    border: 1px solid #1464A0;
}

/* the subcontrols below are used only in the MenuButtonPopup mode */

QToolButton[popupMode="1"] {
    padding: 2px;
    padding-right: 12px;     /* only for MenuButtonPopup */
    border: 1px solid #32414B;   /* make way for the popup button */
    border-radius: 4px;
}

/* The subcontrol below is used only in the InstantPopup or DelayedPopup mode */

QToolButton[popupMode="2"] {
    padding: 2px;
    padding-right: 12px;      /* only for InstantPopup */
    border: 1px solid #32414B;    /* make way for the popup button */
}

QToolButton::menu-button {
    padding: 2px;
    border-radius: 4px;
    border: 1px solid #32414B;
    border-top-right-radius: 4px;
    border-bottom-right-radius: 4px;
    /* 16px width + 4px for border = 20px allocated above */
    width: 16px;
    outline: none;
}

QToolButton::menu-button:hover,
QToolButton::menu-button:checked:hover {
    border: 1px solid #148CD2;
}

QToolButton::menu-indicator {
    image: url(:/qss_icons/rc/down_arrow.png);
    top: -8px;     /* shift it a bit */
    left: -4px;    /* shift it a bit */
}

QToolButton::menu-arrow {
    image: url(:/qss_icons/rc/down_arrow.png);
}

QToolButton::menu-arrow:open {
    border: 1px solid #32414B;
}

/* QCommandLinkButton ----------------------------------------------------- */

QCommandLinkButton {
    background-color: transparent;
    border: 1px solid #32414B;
    color: #F0F0F0;
    border-radius: 4px;
    padding: 0px;
    margin: 0px;
}

QCommandLinkButton:disabled {
    background-color: transparent;
    color: #787878;
}

/* ------------------------------------------------------------------------ */
/* INPUTS - NO FIELDS ----------------------------------------------------- */
/* ------------------------------------------------------------------------ */

/* QCombobox -------------------------------------------------------------- */

QComboBox {
    border: 1px solid #32414B;
    border-radius: 4px;
    selection-background-color: #1464A0;
    padding-top: 2px;     /* This fix  #103, #111*/
    padding-bottom: 2px;  /* This fix  #103, #111*/
    padding-left: 4px;
    padding-right: 4px;
    /* min-width: 75px;  removed to fix 109 */
}

QComboBox:disabled {
    background-color: #19232D;
    color: #787878;
}

QComboBox:hover{
    border: 1px solid #148CD2;
}

QComboBox:on {
    selection-background-color: #19232D;
}

QComboBox QAbstractItemView {
    background-color: #19232D;
    border-radius: 4px;
    border: 1px solid #32414B;
    selection-color: #148CD2;
    selection-background-color: #32414B;
}

QComboBox::drop-down {
    subcontrol-origin: padding;
    subcontrol-position: top right;
    width: 20px;
    border-left-width: 0px;
    border-left-color: #32414B;
    border-left-style: solid;
    border-top-right-radius: 3px;
    border-bottom-right-radius: 3px;
}

QComboBox::down-arrow {
    image: url(:/qss_icons/rc/down_arrow_disabled.png);
}

QComboBox::down-arrow:on,
QComboBox::down-arrow:hover,
QComboBox::down-arrow:focus {
    image: url(:/qss_icons/rc/down_arrow.png);
}

/* QSlider ---------------------------------------------------------------- */

QSlider:disabled {
    background: #19232D;
}

QSlider:focus {
    border: none;
}

QSlider::groove:horizontal {
    background: #32414B;
    border: 1px solid #32414B;
    height: 4px;
    margin: 0px;
    border-radius: 4px;
}

QSlider::sub-page:horizontal {
    background: #1464A0;
    border: 1px solid #32414B;
    height: 4px;
    margin: 0px;
    border-radius: 4px;
}

QSlider::sub-page:horizontal:disabled {
    background: #14506E;
}

QSlider::handle:horizontal {
    background: #787878;
    border: 1px solid #32414B;
    width: 8px;
    height: 8px;
    margin: -8px 0;
    border-radius: 4px;
}

QSlider::handle:horizontal:hover {
    background: #148CD2;
    border: 1px solid #148CD2;
}

QSlider::groove:vertical {
    background: #32414B;
    border: 1px solid #32414B;
    width: 4px;
    margin: 0px;
    border-radius: 4px;
}

QSlider::sub-page:vertical {
    background: #1464A0;
    border: 1px solid #32414B;
    width: 4px;
    margin: 0px;
    border-radius: 4px;
}

QSlider::sub-page:vertical:disabled {
    background: #14506E;
}

QSlider::handle:vertical {
    background: #787878;
    border: 1px solid #32414B;
    width: 8px;
    height: 8px;
    margin: 0 -8px;
    border-radius: 4px;
}

QSlider::handle:vertical:hover {
    background: #148CD2;
    border: 1px solid #148CD2;
}

/* QLine ------------------------------------------------------------------ */

QLineEdit {
    background-color: #19232D;
    padding-top: 2px;     /* This QLineEdit fix  103, 111 */
    padding-bottom: 2px;  /* This QLineEdit fix  103, 111 */
    padding-left: 4px;
    padding-right: 4px;
    border-style: solid;
    border: 1px solid #32414B;
    border-radius: 4px;
    color: #F0F0F0;
}

QLineEdit:disabled {
    background-color: #19232D;
    color: #787878;
}

QLineEdit:hover{
    border: 1px solid #148CD2;
    color: #F0F0F0;
}

QLineEdit:selected{
    background: #1464A0;
    color: #32414B;
}

/* QTabWiget -------------------------------------------------------------- */

QTabWidget {
    padding: 2px;
    selection-background-color: #32414B;
}

QTabWidget QFrame{
    border: 1px solid #32414B;
}

QTabWidget::pane {
    border: 1px solid #32414B;
    border-radius: 4px;
    padding: 2px;
    margin: 0px;
}

QTabWidget::pane:selected {
    background-color: #32414B;
    border: 1px solid #1464A0;
}

/* QTabBar ---------------------------------------------------------------- */

QTabBar {
    qproperty-drawBase: 0;
    border-radius: 4px;
    margin: 0px;
    padding: 2px;
    border: 0;

    /* left: 5px; move to the right by 5px - removed for fix */
    }

QTabBar::close-button {
    border: 0;
    margin: 2px;
    padding: 0;
    image: url(:/qss_icons/rc/close.png);
}

QTabBar::close-button:hover {
    image: url(:/qss_icons/rc/close-hover.png);
}

QTabBar::close-button:pressed {
    image: url(:/qss_icons/rc/close-pressed.png);
}

/* QTabBar::tab - selected ----------------------------------------------- */

QTabBar::tab:top:selected:disabled {
    border-bottom: 3px solid #14506E;
    color: #787878;
    background-color: #32414B;
}

QTabBar::tab:bottom:selected:disabled {
    border-top: 3px solid #14506E;
    color: #787878;
    background-color: #32414B;
}

QTabBar::tab:left:selected:disabled {
    border-left: 3px solid #14506E;
    color: #787878;
    background-color: #32414B;
}

QTabBar::tab:right:selected:disabled {
    border-right: 3px solid #14506E;
    color: #787878;
    background-color: #32414B;
}

/* QTabBar::tab - !selected and disabled ---------------------------------- */

QTabBar::tab:top:!selected:disabled {
    border-bottom: 3px solid #19232D;
    color: #787878;
    background-color: #19232D;
}

QTabBar::tab:bottom:!selected:disabled {
    border-top: 3px solid #19232D;
    color: #787878;
    background-color: #19232D;
}

QTabBar::tab:left:!selected:disabled {
    border-right: 3px solid #19232D;
    color: #787878;
    background-color: #19232D;
}

QTabBar::tab:right:!selected:disabled {
    border-left: 3px solid #19232D;
    color: #787878;
    background-color: #19232D;
}
'''

Since I'm not reading from a file, I can't use readline() . I already tried to use a for loop to iterate through and check if QSlider::groove:horizontal is inside but I can't figure out how to remove the remaining lines. How can I remove this snippet of CSS and return the other untouched CSS as a str ?

stylesheet = 'the really big CSS stylesheet string'
def remove_qslider_tick_bug():
    # Remove snippet
    return filtered_stylesheet

Answer 1

You can use .find to get the location of your substring, then Python allow string slicing the same as slicing lists. So if you want to do this all yourself you could do something like:

def snip_outside_str(text,start_text,end_text):
                start = text.find(start_text)
                end = text[start:].find(end_text) #fails if start_text=end_text
                end = end + start + len(end_text)
                return text[:start]+ text[end:]

stylesheet = 'the really big /*CSS*/ stylesheet string'

def remove_qslider_tick_bug(my_str, start_str='/*', end_str='*/'):

    while my_str.find(start_str)  != -1:
        my_str = snip_outside_str(my_str, start_str, end_str)

    return my_str

WARNING: This code is just an example of how to tackle the problem, it's going to produce some weird results when start_str=end_str or when end_str doesn't exist. So if you want to work with CSS there are libraries that can do that for you. For example: https://tinycss.readthedocs.io/en/latest/

(Disclaimer, I'm not a web guy and I've never used tinycss in anger)