Tidy installer_data.py and utils.py

- Fix unused and missing imports
- Only import configparser is needed for Python 3
- Unnecessary string u prefix for Python 3
- Comment typo

python/pyplugin_installer/installer_data.py

@@ -28,22 +28,14 @@ from qgis.PyQt.QtCore import (pyqtSignal, QObject, QCoreApplication, QFile,
                               QLocale, QByteArray)
 from qgis.PyQt.QtXml import QDomDocument
 from qgis.PyQt.QtNetwork import QNetworkRequest, QNetworkReply
-from qgis.core import QgsSettings
+from qgis.core import Qgis, QgsSettings
 import sys
 import os
 import codecs
 import re
-try:
-    import configparser
-except ImportError:
-    import configparser as configparser
-try:
-    from importlib import reload
-except ImportError:
-    from imp import reload
+import configparser
 import qgis.utils
 from qgis.core import QgsNetworkAccessManager, QgsApplication
-from qgis.gui import QgsMessageBar
 from qgis.utils import iface, plugin_paths
 from .version_compare import pyQgisVersion, compareVersions, normalizeVersion, isCompatible
 
@@ -565,7 +557,7 @@ class Plugins(QObject):
         """ get the metadata of an installed plugin """
         def metadataParser(fct):
             """ plugin metadata parser reimplemented from qgis.utils
-                for better control on wchich module is examined
+                for better control of which module is examined
                 in case there is an installed plugin masking a core one """
             global errorDetails
             cp = configparser.ConfigParser()
@@ -625,7 +617,7 @@ class Plugins(QObject):
         else:
             error = "broken"
             e = errorDetails
-            errorDetails = QCoreApplication.translate("QgsPluginInstaller", u"Error reading metadata")
+            errorDetails = QCoreApplication.translate("QgsPluginInstaller", "Error reading metadata")
             if e:
                 errorDetails += ": " + e
 

python/utils.py

@@ -30,7 +30,7 @@ QGIS utilities module
 
 from qgis.PyQt.QtCore import QCoreApplication, QLocale, QThread
 from qgis.PyQt.QtWidgets import QPushButton, QApplication
-from qgis.core import Qgis, QgsExpression, QgsMessageLog, qgsfunction, QgsMessageOutput, QgsWkbTypes
+from qgis.core import Qgis, QgsMessageLog, qgsfunction, QgsMessageOutput
 from qgis.gui import QgsMessageBar
 
 import os
@@ -38,10 +38,7 @@ import sys
 import traceback
 import glob
 import os.path
-try:
-    import configparser
-except ImportError:
-    import ConfigParser as configparser
+import configparser
 import warnings
 import codecs
 import time