fix QIntValidator allows '+'

spyder/plugins/editor/widgets/gotoline.py

@@ -62,8 +62,10 @@ def __init__(self, editor):
 
         ok_button = bbox.button(QDialogButtonBox.Ok)
         ok_button.setEnabled(False)
+        # QIntValidator does not handle '+' sign
+        # See Spyder PR #20070
         self.lineedit.textChanged.connect(
-                     lambda text: ok_button.setEnabled(len(text) > 0))
+                     lambda text: ok_button.setEnabled(len(text) > 0 and text != '+'))
 
         layout = QHBoxLayout()
         layout.addLayout(glayout)
@@ -75,10 +77,14 @@ def __init__(self, editor):
     def text_has_changed(self, text):
         """Line edit's text has changed."""
         text = str(text)
-        if text:
+
+        # QIntValidator does not handle '+' sign
+        # See Spyder PR #20070
+        if text and text != '+':
             self.lineno = int(text)
         else:
             self.lineno = None
+            self.lineedit.clear()
 
     def get_line_number(self):
         """Return line number."""

spyder/plugins/variableexplorer/widgets/importwizard.py

@@ -236,7 +236,13 @@ def get_row_sep(self):
 
     def get_skiprows(self):
         """Return number of lines to be skipped"""
-        return int(to_text_string(self.skiprows_edt.text()))
+        skip_rows = to_text_string(self.skiprows_edt.text())
+        # QIntValidator does not handle '+' sign
+        # See Spyder PR #20070
+        if skip_rows and skip_rows != '+':
+            return int(skip_rows)
+        else:
+            return 0
 
     def get_comments(self):
         """Return comment string"""